Archive for December 2015

All-New 2016 Camaro Hits the Road

The all-new sixth-generation 2016 Camaro (Fig. 1) sets new standards for levels of performance, technology and refinement in the sporty car segment. The new Camaro is available in 4 models: 1LT, 2LT, 1SS and 2SS. The SS models are equipped with the 6.2L V8 while LT models have the all-new 3.6L V6. In early 2016, the Camaro convertible model and models with the 2.0L turbo engine will be available.

2016 Chevrolet Camaro

Fig. 1


The new Camaro shares the same light, rear wheel drive architecture as the Cadillac ATS and CTS sport sedans. Approximately 70 percent of the architectural components are unique to the Camaro. Vehicle mass has been reduced between 223–390 pounds (101–177 kg), depending on the model, delivering a more responsive driving experience. At the same time, structural rigidity was increased by 28 percent. (Fig. 2) With a lighter, stiffer architecture and more powerful engines, the performance of the new Camaro SS delivers better lap times than the previous generation’s track-focused Camaro 1LE package. The SS hood has functional air vents that help to improve engine cooling and reduce front end lift, while the SS front fascia has integrated brake cooling ducts.


2016 Chevrolet Camaro Modular Structure

Fig. 2




The available engines during the initial vehicle launch period are the 6.2L V8 (RPO LT1) with continuous variable valve timing (VVT), direct injection (DI) and Active Fuel Management (AFM) and the new 3.6L V6 (RPO LGX) with continuous VVT, DI with AFM. An Ecotec 2.0L turbocharged 4-cylinder engine will be available later.


The engine line-up for Camaro (left to right): the small block 6.2L V8 LT1, an all-new 3.6L V6 and the Ecotec 2.0L turbocharged 4-cylinder. (Fig. 3)


The all-new engine line up for Camaro features (left to right) t

Fig. 3


The 6.2L V8 small-block is standard in the Camaro SS models. When equipped with the Hydra-Matic 8-speed 8L90 automatic transmission (RPO M5U), the engine is capable of 0–60 mph (0–97 km/h) in 4.0 seconds and produces 455 horsepower and 455 lb.-ft. of torque.


The 6.2L V8 also is available with the Tremec 6-speed manual transmission. The transmission now offers Active Rev Match, which helps provide smoother shifting by matching the engine speed to the next selected gear. By monitoring shift lever and clutch operation, engine speed is adjusted to match a calibrated value based on gear selection. Active Rev Match is maintained for a few seconds between shifts, and then deactivates if the shift is not completed. The system is activated and deactivated by pressing either of the paddles marked REV MATCH on the steering wheel.


The all-new 3.6L V6 (RPO LGX) is standard in the Camaro LT models. The LT can be paired with the Hydra-Matic 8-speed 8L45 automatic transmission (RPO M5T) or the manual Tremec 6-Speed transmission (RPO M13). The engine produces 335 horsepower and 284 lb.-ft. of torque.




For the Camaro LT, the brakes include 12.6-inch (320 mm) front rotors with four-piston calipers and 12.4-inch (315 mm) rear rotors with single-piston sliding calipers. The rear brake calipers have an integrated park brake actuator.

For the Camaro SS, the standard brakes include 13.6-inch (345 mm) front rotors with four-piston fixed calipers and 13.3-inch (338 mm) rear rotors with four piston fixed calipers.


Brembo brakes are standard on SS models and available on LT models with RPO J55 on the front brakes only. The brakes are optimized for the car’s mass and performance capability and provide an improved brake feel across the board for all models due to the new ABS system and reduced vehicle mass. The vehicle is equipped with a Bosch ABS 9.0 brake system. The electronic brake control module (EBCM) and the brake pressure modulator valve are serviced separately.


TIP: Camaro LT models that are equipped with RPO JL9 brakes require a revised brake bleed procedure. Refer to the appropriate Service Information.


Interior Features


The new Camaro features a driver-focused cockpit with an available 8-inch (203 mm) diagonal configurable color digital instrument cluster and an available 8-inch (203 mm) or a 7-inch (178 mm) infotainment color touch screen display. (Fig. 4) Standard connectivity features include Chevrolet MyLink with Apple CarPlay capability (excluding RPO IOB) and OnStar® 4G LTE with Wi-Fi.


2016 Chevrolet Camaro

Fig. 4


All models come standard with the Passive Entry Passive Start (PEPS) pushbutton start system.


A new feature is the functionality of the four air vent trim rings on the HVAC system. These air vent trim rings around the center air vents are the functional controls for the temperature and fan speed. Rotate each ring to adjust temperature and fan speed on the single-zone HVAC system or rotate them to control the temperature settings for the driver and passenger on the dual-zone HVAC system. (Fig. 5)


2016 Chevrolet Camaro

Fig. 5


Standard on the 2SS and available on the 2LT is a customizable Interior Spectrum Lighting feature that offers 24 different ambient lighting effects, including fade and transition on the dash, door panels and center console. This feature also includes the theatrical “car show” mode. When using the key fob and unlocking the vehicle, a lighting pulse will display inside the car. Upon vehicle start-up there is light movement across the car moving outward from the infotainment touch screen to the doors for approximately 1.5 seconds. When switching driving modes, the same light movement occurs for approximately 1.5 seconds.




The Camaro offers three different infotainment options.


• Radio infotainment system RPO IOB features midlevel connectivity, no apps infotainment, and a 7-inch (178 mm) color touchscreen display. Bring your own media.

• Radio infotainment system RPO IO5 has enhanced connectivity and an 8-inch (203 mm) color touchscreen display.

• Radio infotainment system RPO IO6 has an embedded navigation radio system, enhanced connectivity features and an 8-inch (203 mm) color touchscreen display.



RPOs IO5 and IO6 also offer Apple CarPlay and Android Auto, where phone features on shown on the touchscreen display. A “Projection” icon on the MyLink™ screen is visible when a phone is not connected and changes to indicate Apple CarPlay™ or Android Auto™ when a compatible phone is connected via a USB.


Transport and Recovery


The tow hook access point on the Camaro was uniquely packaged in the front grille to keep a clean front end appearance. (Fig. 6) The LT and the GM accessory grille do not have a tow hook access cover. To access the tow hook access point on the SS, a small cover must be removed. Install the tow eye into the socket by turning it clockwise until it stops. Attach the recovery cable to the installed tow eye and load the vehicle onto the flatbed.  Transport the vehicle on a flatbed car carrier only.


F06 Camaro tow hook

Fig. 6


Special Tools


For information on the new special tools released for the 2016 Camaro, refer to Bulletin #15-NA-066.


– Thanks to Sherman Dixon and Ann Briedis

2016 Camaro Delivers Performance Options

The all-new 2016 Camaro (Fig. 7) is built to perform on or off the track. There are several features that allows the driver to maximize the performance of the vehicle. It’s important to understand how these features operate when diagnosing any related conditions.


2016 Chevrolet Camaro SS

Fig. 7


Driver Mode Control


Driver Mode Control changes the software calibrations of the suspension, steering, and powertrain to achieve various performance characteristics, based on driving preferences, weather, or road conditions.


The Driver Mode Control has three or four modes: Tour, Sport, Snow/Ice, and Track. The Track Mode is for SS models only. Press the up or down arrow on the MODE control switch on the center console to make a mode selection. (Fig. 8)


F08 mode button

Fig. 8


Pressing the switch will display a graphic on the instrument cluster (Fig. 9) of all available ride modes and change to the next mode. The Tour (default mode) and Sport Modes will feel similar on a smooth road. The Sport Mode will remain active at the next ignition cycle if selected when the vehicle is turned off.


F09 mode graphic

Fig. 9


Performance Shifting


While driving in Sport Mode or Track Mode (SS models), if the Tap Shift feature has not been activated, the transmission will identify when the vehicle is being driven in a competitive manner and will remain in a gear longer than it would in the normal driving mode based on throttle input and vehicle lateral acceleration. If there is a rapid reduction in throttle from a heavy throttle position at high rpm, the transmission will maintain the current gear up to near redline rpm. While braking, the transmission will automatically downshift to the next lower gear keeping engine speed above approximately 3,000 rpm.


If the vehicle is then driven for a short time at a steady speed, and without high cornering loads, the transmission will upshift one gear at a time, until 8th gear is selected. After shifting to 8th gear, or coming to a complete stop, the transmission will return to normal Sport Mode shifting.


Competitive Driving Mode Settings


Competitive Mode is an optional handling mode on SS models that allows increased performance while accelerating and cornering by regulating and optimizing the engine, brakes, and suspension performance. These modes are for use at a closed course race track and are not intended for use on public roads. They will not compensate for a driver’s inexperience or lack of familiarity with the race track.


To turn on Competitive Mode, press the Traction Control button twice quickly while in Sport or Track Mode. (Fig. 10) Competitive Mode allows full engine power while the StabiliTrak system helps maintain directional control of the vehicle through selective brake application. In this mode, traction control is off and Launch Control is available.


F10 comp mode

Fig. 10


The Launch Control feature available on SS models is part of the Competitive Mode. It’s a form of traction control that manages tire spin while launching the vehicle, which allows the driver to achieve high levels of vehicle acceleration in a straight line. Launch Control is only available when:


• Competitive Mode is selected.

• The vehicle is not moving.

• The steering wheel is pointing straight.

To use Launch Control, the accelerator should be pressed to the floor while the clutch in engaged (and the manual transmission in 1st gear, if equipped) or with the brake pedal firmly applied (automatic transmission, if equipped). Next, the clutch or brake pedal should be released while keeping the accelerator pressed to the floor. After the vehicle is launched, the system continues in Competitive Mode.


Driver Shift Control


Driver Shift Control enables the driver to manually control the automatic transmission shifting. This can be done through Temporary Tap Shift Mode or Manual Mode. The steering wheel paddles are used for both modes. (Fig. 11)


F11 paddle

Fig. 11


Tapping either the upshift or downshift paddle will place the transmission in Tap Shift Mode while the transmission is in Drive. Use the left paddle to downshift and the right paddle to upshift. The current gear is displayed on the Driver Information Center on the instrument cluster. Automatic shifting will return after seven seconds of driving at a steady speed, or when the vehicle comes to a stop.


The Manual Mode enables the driver to shift the automatic transmission similar to a manual transmission. This can used for sportier driving or when climbing or descending hills, to stay in a gear longer, or to downshift for more power or engine braking. To use Manual Mode, move the shift lever to the left from Drive into the side gate marked +/−. Use the shift lever or steering wheel paddles to shift. The transmission will only allow the driver to shift into gears appropriate for the vehicle speed and engine rpm.


– Thanks to Sherman Dixon and Ann Briedis

Calibration Files to be Delivered Through New Techline Data Service

As vehicle software updates through TIS2Web have become larger, a new solution is coming soon to help dealerships manage these files more efficiently. The new Techline Data Service (TDS) is an application intended to eliminate the need for each dealership computer to download large calibration files and exhaust Internet bandwidth. TDS also is designed to eliminate the need to install these large calibration files from DVDs.


With TDS installed and configured, one computer in the dealership is to be dedicated for downloading calibration files, while other PCs can pull the files from the dedicated computer through the shop’s network. The download speed along with download times will be adjustable for convenience and the dedicated PC can be set to download calibrations throughout the day or night.


Preparing for TDS


TDS will begin rolling out in early 2016. It will be a staged rollout to handle the volume of dealerships. Once the rollout of TDS is complete, Techline Cache disks will be discontinued.


• What dealerships need for TDS:

• A dedicated PC that meets GM specifications that can be powered on at all times

• A dedicated PC “hard wired” to the network (Wireless will work but is not recommended)

• Windows 7 Professional operating system

• At least 500 GB of free hard drive space and 4 GB of RAM

• The person installing the service must have Windows administrator access

• Sleep Mode must be disabled in power management



An administrative message that TDS is ready to be loaded will be sent out once it has been deployed to each dealership. When it’s deployed, a new “TDS” Tab in TIS2Web will appear for launching the installer. Make sure to only launch the installer on the PC that will be used as the TDS storage machine in the dealership. Refer to TIS2Web for complete instructions.


– Thanks to Chris Henley and Dan Carter

Call the GM Tire Program Hotline for Winter Tire Assistance

Many GM high performance models, such as the CTS-V, ATS-V, Camaro ZL1, Corvette and Chevrolet SS, are factory equipped with summer tires (Fig. 12) that are optimized for maximum dry and wet road performance while still retaining satisfactory tread life, excellent durability and low noise levels. During winter months in areas that receive a significant amount of snow, winter tires that are designed to enhance winter driving are a recommended alternative for summer tires.


2016 Corvette Stingray and Z06 Spice Red Design Package

Fig. 12


Winter tires, in general, are optimized for increased traction on snow and ice. In some cases, this may translate into decreased dry road traction, increased road noise and shorter tread life.


The following models are equipped with summer tires: 2010-2013 CTS Sedan; 2010-2014 CTS Wagon; 2010-2016 CTS-V, Camaro; 2011-2015 CTS Coupe; 2012-2015 Camaro ZL1; 2012-2016 Regal GS; 2013-2016 ATS; 2014-2015 CTS Sedan (VIN A), Camaro Z28; 2014-2016 CTS-V Sport, Corvette, Corvette Z51, Chevrolet SS; 2016 ATS-V and CT6.


All of these models are rear-wheel drive with the exception of the Regal GS, which is front-wheel drive. In all cases, if a switch is made to winter tires, all four tires must be replaced. Do not install winter tires only on the driving wheels.


When selecting winter tires, the same size and load value as the Original Equipment tires should be used. A tire in the same size and a higher load value is acceptable. Clearance issues, speedometer error and/or altered vehicle handling characteristics may occur if tires of a different size are used. If winter tires are not available in the same speed rating as the Original Equipment tires, the speed rating of the winter tire chosen must not be exceeded and driving should be adjusted accordingly.


GM Tire Program


There are several choices in winter tires currently available through the GM Tire Program in sizes that match Original Equipment tires. Winter tires purchased through the GM Tire Program are warranted through the GM Aftersales Tire Warranty Program in the U.S. (In Canada, refer to the tire manufacturer’s aftermarket warranty policy). Winter tires are not guaranteed to be in stock. The cost to purchase any winter tires is the customer’s responsibility.


Tire Hotline


If assistance is needed in obtaining an appropriate winter tire, contact the GM Tire Program by calling at 1-877-728-4737 (U.S.). In Canada, contact the District Manager – Customer Care and Aftersales.


The GM Tire Program Hotline also can be contacted for help with ordering replacement tires for new model year vehicles that have just started production or for limited production vehicles, such as the new Michelin Pilot tires on the CTS-V. GM usually will have a reserve from the tire companies for new limited production vehicles with new tires. These tires also will be available through the GM Tire Program.


TIP: In some cases, a run flat winter tire may not be available for a vehicle equipped with run flat tires. In these situations an inflator kit, part number 23494786, should also be ordered to provide extended mobility since the vehicle would not be equipped with a spare tire. The sealant in the inflator kit should not be used on run-flat tires.


– Thanks to Jon Nowak

OEM and ACDelco Replacement Battery Specifications Chart

Correct battery cold cranking amperage (CCA) ratings and type are critical for proper test results when using the EL-50313 Midtronics GR8 Battery Charger/Tester. It may be difficult to see the battery specification label with the Original Equipment Manufacturer (OEM) part number and CCA rating and type without removing the battery or other components.


An updated battery specifications table (Fig. 13) has been released in Bulletin #15-06-03-002A. It lists the original equipment ratings and part numbers used to set up a proper battery test. It also provides the ACDelco part number for the correct ACDelco battery warranty replacement. The ACDelco battery warranty replacement in the catalog is designated by the “Original Equipment Replacement” note in the description field.


F13 battery chart image

Fig. 13


Battery Testing


When testing batteries, always perform the following:


• Select “Out of Vehicle” when setting up the test.

• Disconnect both battery cables from the battery. The battery does not need to be removed from the vehicle.

• Connect the EL-50313 Battery Tester directly to the battery terminal posts.

• Select the correct CCA. The battery should be close to room temperature and not frozen.

• Select the proper battery type; Flooded, AGM, or Stop/Start AGM (Auxiliary Battery). Spiral AGM is not used by GM. The proper battery type must be selected to prevent battery damage and ensure correct test results.



Cold Batteries


If a battery has set for a long period of time or has set in cold weather, the long stand time can affect the testing results.


Inside a conventional lead acid battery, the electrolyte is generally composed of 35% sulfuric acid and 65% water. (Fig. 14, #1) When a lead acid battery is inactive (not actively discharged and charged), the acid, being heavier than water, will settle toward the bottom. This leaves a low acid concentration near the top and a higher concentration at the bottom, referred to as acid stratification. (Fig. 14, #2) Since it is the concentration of the sulfuric acid that lowers the electrolyte freeze point, the upper levels of the acid (with low acid concentration) in this state can begin freezing at or near 32°F (0°C). Stratification does not affect AGM-type batteries.


F14 stratified battery

Fig. 14


In a low state of charge (SOC), lead sulfate will form on the battery plates. This creates a sulfated battery condition where the lead sulfate insulates the plate’s reactive material, which reduces capacity and decreases the battery’s ability to accept a charge. Sulfation begins to occur below 80% state of charge in as little as two weeks. The longer the battery is left in a low state of charge, the more lead sulfate forms. Batteries that have been deeply discharged for periods longer than 60 days may be permanently damaged.


Batteries that are deeply discharged will take an extended time to recharge. Batteries that are cold (below freezing) can falsely fail testing. Batteries that are cold and deeply discharged must first be warmed prior to testing & charging. It is impossible to calculate the core temperature of a battery, so warm the battery a minimum of 12 hours before testing. Longer warming times will be needed depending on how cold the battery is.


The EL-50313 Battery Tester has a built in algorithm to limit the length of time needed to recharge a battery. For a cold battery resistant to charge, or a deeply discharged battery, it may calculate a longer than reasonable time to recover the battery and fail it. With a newer battery that is most likely simply discharged, select Manual Charge, Limit Current, 10 Amps, for 120 Minutes. Once that is complete, perform another diagnostic charge.


The Absorbent Glass Mat (AGM) battery requires different charging voltages than lead acid batteries. The EL-50313 Battery Tester has an algorithm built in for AGM battery testing. AGM must be selected when prompted or damage to the battery will result. Make sure to select the proper battery type: AGM and CCA during charger set up. Incorrectly selecting “flooded” battery may cause unnecessary battery replacements. AGM batteries are sensitive to overcharging, so maximum charging voltage should be limited to 15.5V.


Refer to Bulletin #15-06-03-001A for additional information on testing cold batteries.


– Thanks to Matt Bunting and Gary McCraw

Incorrect Temperature Displays

The driver’s and passenger’s temperature settings may be displayed in Celsius or the outside ambient temperature may be missing from the radio/HVAC display on some 2010-2013 LaCrosse, 2012-2016 Verano, 2013-2015 Malibu, and 2016 Malibu Limited models. These conditions may be caused by a disconnected outside ambient temperature sensor or the wiring may have a fault.


To correct these conditions, connect the vehicle to a scan tool (GDS2) and check the Instrument Panel Cluster (IPC) for DTCs. If DTC B0158 (Ambient Air Temperature Sensor Circuit) is set, check the connection of the outside ambient temperature sensor. (Fig. 15)


F15 air sensor

Fig. 15


If the sensor is connected, check the integrity of circuits 61 and 636 from the sensor to the Instrument Panel Cluster (Fig. 16) or follow the appropriate Service Information for diagnosing DTC B0158. For additional information on wiring repairs, refer to Bulletin #10-00-89-005.


F16 sensor circuits

Fig. 16


– Thanks to Christopher Crumb

Easy Entry Seat Motor Noise

On some 2015-2016 ATS Coupe and 2014-2016 ELR models, increased power seat motor noise may be noticed when moving the driver’s or passenger’s seat forward or rearward using the Easy Entry power seat switch located at the top of the seat back (Fig. 17) or using the power seat switch on the side of the seat. Do not replace the seats or motors for this condition. All Easy Entry seats for these models are the same.


The Easy Entry power seat adjustment motors in the ATS Coupe and the ELR are unique. They run at a different rate and produce more noticeable noise than other vehicle models without the Easy Entry feature. Before making any repairs, compare the noise level of both seats using the Easy Entry seat switch and the side seat switch to determine if there is a difference in the driver’s and passenger’s seat.


F17 seat switch

Fig. 17


TIP: Comparing an ATS Coupe to another ATS Coupe or an ELR to another ELR is advised. Do not compare the noise level to an ATS Sedan or CTS Sedan (VIN A). Those seat motors are different.


– Thanks to David Antal

Compass Always Shows North

The compass on the radio display may always show North (N) regardless of vehicle direction on some 2014 Regal, LaCrosse, ATS, CTS VIN A, SRX, XTS, Corvette, Impala, Silverado 1500 and Sierra 1500 models. This condition affects the following radios: RPO IO5 (Regal, LaCrosse, CTS VIN A, XTS, Impala, Silverado, Sierra), RPO RAO without UY4 – Navigation (SRX, Corvette); and RPO UA3 without UY4 – Navigation (ATS).


The compass direction when the navigation icon is selected should indicate the vehicle direction. Reprogram the radio with the latest calibrations using TIS2Wev to address this condition with the compass.


– Thanks to Ryan Dorland


Service Workbench Maintenance Menus Now Available to Technicians Anytime

Service technicians now have the ability to view Maintenance Menus in Service Workbench (Fig. 1) for a vehicle in their service bay at any time, either through the Service Visit Summary page or other tools in Service Workbench.


F01 maintenance menu

Fig. 1


Previously, the Maintenance Menus could only be seen by technicians if the service consultant had first initiated the menu in the Service Workbench system. Now, a technician can view a menu by:


• First accessing the Service Visit Summary Link from Global Connect (Fig. 2)


F02 mm applications 1

Fig. 2


Once on the Service Vehicle Summary page, there are several ways to access the menus:


• Selecting the New Menu button on the top right of the Service Visit Summary page. (Fig. 3) • Using the Start Menu link in the Menu Status column if a new service visit has already been started. • Using the Maintenance Menu tab at the top left of another tool currently being used (such as the Dashboard or Multipoint Inspection)


F03 mm summary 2

Fig. 3


Using the New Menu button allows the technician to begin a new menu using either a VIN or by selecting a year, make, and model from the dropdown menus provided. (Fig. 4)


F04 mm new menu 3

Fig. 4


All of these methods are now available to the technician regardless of the service consultant starting the Menu first. However, technicians will not be able to save the menu in the system as a new menu. The service consultant must save the menu in the system.


– Thanks to Robert Thwing

Quick Learn Process for Programming Additional Keys

A new quick-learn process has been developed for programming additional keys (Fig. 5) without using the Service Programming System (SPS) for keyed vehicles in the U.S. and Canada.


F05 key fobF05A key 2

Fig. 5


The Adding Keys quick-learn procedure (Service Information ID: 3273485) does not erase any keys prior to programming. The procedure will simply program the key into the next available slot. The new procedure does not apply to vehicles equipped with a keyless access system (pushbutton start).


If a new key is being learned to a vehicle to replace a damaged, inoperative, or stolen key, the Replacing Keys procedure in the Service Information must be used, which will erase all the known keys from the vehicle. This ensures that the old key cannot be used to access or start the vehicle after programming.


Adding Keys


The quick-learn procedure requires that one learned key be available (U.S.). In Canada, two learned keys must be available. Eight keys may be learned to one vehicle. The keys to be learned must duplicate the mechanical cut of the current key.


1. With a previously learned key, turn the ignition on.

2. Turn off the ignition and remove the key. In Canada, repeat the ignition on/off procedure with the second previously learned key.

3. Within 10 seconds of turning off the ignition, insert the new key to be learned and turn the key to the On/Run position. Do not turn the key to the crank/start position. Keep the key in the On/Run position for five seconds until the security theft warning lamp on the instrument cluster turns off, indicating the vehicle has learned the new key. Repeat this step for any additional keys.

TIP: The 10 second time constraint must be met in order for programming to be successful. Be sure to keep other keys and transmitters at least 12 inches (30 cm) from the ignition cylinder while learning a key.

4. Verify each key operates properly. Remove the key from the ignition and wait 30 seconds. Insert the key into the ignition and start the vehicle.


If the key doesn’t work properly, repeat the quick-learn process, paying close attention to the time limits.


– Thanks to Theon Tinker and Peter Joslyn

New My Shortcuts Panel in GlobalConnect

The My Shortcuts tab at the top of the new GlobalConnect home page has been updated and moved to the top-right of the page, making it easier for users to access their frequently used apps without extra clicks. Plus, the list of shortcuts can now be customized so the apps used most are at the top of the list.


Sorting Shortcuts


Creating a shortcut for an app from the App Center is still done just like before. Up to 15 shortcuts will appear in the new My Shortcuts panel.


To manage the apps, click the menu icon (“burger” button} and choose your top 15 favorites for the My Shortcuts panel. Only the apps added as your shortcuts appear in the list. Use the Add to My Shortcuts button in the App Center to add a new shortcut.


Sort the order of the shortcuts by clicking the Sort Apps button. Each app shortcut will be numbered and have a dotted line it. Click and drag an app shortcut to where you want it to appear in the list by numerical order. (Fig. 6) Any of the shortcuts can be moved. Click the Save button to save the new list order. The new order will appear in the My Shortcuts tab.


F06 shortcut

Fig. 6


– Thanks to Lisa Scott

TAC Implements New Tools for a Better Caller Experience

The goal of the GM Technical Assistance Center (TAC) is to ensure that every TAC consultant provides top quality service each time a technician calls for diagnostic help with a vehicle. With this goal in mind, TAC (in the U.S.) has rolled out several new tools and procedures this year.


TAC consultants now have a new tracking system for cases, a new robust knowledge management tool, and an updated phone system. Each of these tools help consultants quickly provide the information technicians need to make diagnostic and repair decisions. A special thank you goes out to callers for their patience while these tools were being implemented.


In addition, TAC has redesigned the caller experience by:


Improving Consultant Utilization – Reducing the average amount of time spent on each call through performance management, getting callers the information they need quickly and efficiently • Improving Schedule Efficiency – Optimizing consultants’ schedules to ensure a high level of service and convenience for technicians • Reducing Repeat Calls – Reducing the number of times technicians make repeat calls that may be needed for complicated vehicle issues • Reducing After-Call Work – Improving the effectiveness of consultants after the call using the Performance Management database also increases consultants’ availability


The feedback of callers provided through the TAC surveys and reviews helps identify areas where continued improvements are needed as well as how recently implemented changes are working. At the end of November, TAC’s overall customer satisfaction rate for the year came in at 91%, with an 85% first call resolution closure rate. Helping to achieve those ratings were the more than 11,000 technical training hours consultants completed during 2015. Another accomplishment has been an improved service level with 70% of calls answered within 60 seconds for the last three months.


Looking forward to 2016, the TAC will be implementing a new survey for technicians with a new look. We would like to thank technicians in advance for their continued participation. The feedback technicians provide is key to the success of the TAC.


2016 will also bring an introduction to a slimmed down phone prompt system, which should reduce the number of prompts needed to get to a TAC consultant, and enhanced training programs for consultants.


The TAC also is sharing the information generated by technicians’ calls. In the last year, more than 800 PI’s have been published in the Service Information for dealership technicians.


The success of the TAC depends on our relationship with everyone in the dealership service department. The improvements made over the past year are designed to help provide an outstanding customer experience.


– Thanks to Elizabeth Belland

Dashes on Outside Air Temperature Display

The outside air temperature display (Fig. 7) on some 2013-2015 ATS, SRX, XTS and 2014-2015 CTS Sedan (VIN A) models may intermittently show dashes instead of a numeric value on the Cadillac CUE touch screen. This can occur whenever a battery is disconnected or other loss of battery power occurs.

F07  temp display


Fig. 7


Once system voltage has been restored, the BCM must see the Engine Run flag once before it sends temperature data to the display. This is a normal operation of the Cadillac CUE system.


When the battery is disconnected and reconnected for service repairs, be sure to perform the following steps prior to returning the vehicle to the customer:

1. Start the engine.

2. Cycle the ignition Off.

3. Restart the engine.

4. Confirm that the outside temperature is now displayed.



– Thanks to David Antal

Inoperative Radio with DTC U0186

Some 2016 Volt models equipped with the premium speaker system and amplifier (RPO UQA) may have a condition where the radio and/or audio is inoperative or intermittently inoperative. DTC U0186 (Lost Communication with Speaker Amplifier Module) may be set and there may not be any communication with the amplifier.


Do not replace the amplifier (Fig. 8) for this condition.


F08 amp

Fig. 8


Inspect the amplifier connectors for spread terminals, broken terminals, connectors/terminals that are not fully seated, or faulty terminal crimps. Closely inspect T3 Audio Amplifier X1 terminal 4 (B+ circuit 1140) and X1 terminal 8 (ground circuit 1450). (Fig. 9) Repair as needed. Refer to the appropriate Service Information for correct diagnostic test probe and connector repair information.


F09 terminals

Fig. 9


– Thanks to Ryan Dorland

Service Theft Deterrent Message

Some 2015 Colorado and Canyon models may have a Service Theft Deterrent message displayed on the Driver Information Center. DTC B2955 (Security Sensor Data Circuit) may be set.


Inspect the connections at the immobilizer control module (Fig. 10) and ensure there is enough slack in the harness with the steering column extended. In addition, verify there are no proximity passes or fobs (except the GM Remote Keyless Entry transmitter) on the key ring. If other fobs or passes are present, they should be removed. Reprogram the BCM with most recent calibrations found in TIS2Web.


F10 immobilizer

Fig. 10


– Thanks to Ken Cole

Chime Volume Too Loud

Owners of some 2014-2015 Silverado and Sierra models, including HD trucks without RPO AVF, equipped with the Performance Enhanced Audio Speaker System (RPO UQ3) may find the chime volume to be too loud.


The radio can be reprogrammed using the Service Programming System (SPS) and the latest calibrations in TIS2Web to reduce the volume of the chime.


– Thanks to Ryan Dorland

Service Know-How

10215.12D – Emerging Issues

December 10, 2015


To view Emerging Issues seminars:

• Log in to

–   Select Resources > Service Know-How/TECHAssist > Emerging Issues > Searchable Streaming Video; or

–   Select Catalog to search for the course number, and then select View > Take or Continue Course

New Bulletin Review – November 2015

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