Archive for February 2017

5ET50 Transmission Part Restriction — Secure Properly to Prevent Shipping Damage

The 2016-2017 Volt and Malibu Hybrid use the 5ET50 continuously-variable electric transmission (RPO MKE). As part of GM’s process to gather important feedback for engineering improvements, the 5ET50 transmission is currently part of the component restriction program.


For more information on the restriction program for these models, refer to the following documents:

• #PIP5321D: Volt 5ET50 Transmission Component Restriction Program • #PIP5390A: Malibu 5ET50 (MKE) Hybrid Transmission and Component Restriction Program


TIP: When replacing the 5ET50 transmission, freeze frame failure records must be captured along with any Diagnostic Trouble Codes (DTC). Do not clear DTCs.


The 2011-2015 Volt and 2014-2016 ELR use the 4ET50 electronically-controlled, variable-speed transmission (RPO MKA). The 4ET50 transmission also is part of the component restriction program. Refer to #PIP4840Q: (EREV) Volt and ELR 4ET50 Transmission Component Restriction Program for more information.


Returns and Shipping


The component restriction for these transmissions is administered by the GM Technical Assistance Center (TAC). Servicing technicians must provide detailed customer comments, conditions, DTCs, and other useful information. To request restricted components and gather shipping instructions, contact GM TAC.


Transmission Cases


When returning the 5ET50 transmission, it should be shipped back in the same shipping container that the new transmission arrived in. The cases are custom-designed for specific components so it’s important to use the correct container.


5ET50 transmission (2016-2017 Volt and Malibu Hybrid): Shipping cases have a blue stripe. (Fig. 1)


Fig. 1


4ET50 transmission (2011-2015 Volt and 2014-2016 ELR): Shipping cases have a white stripe. (Fig. 2)


Fig. 2


Protective Covers


Before returning a transmission, ensure that all connectors (Fig. 3) have protective covers installed to ensure they are protected during shipping.


Fig. 3


If the transmission is not secured properly in the shipping container, the connectors and other assembly components may be damaged. (Fig. 4)


Fig. 4


Strap Routing


Many returned transmissions have sustained damage during shipping, which hinders the diagnosis that can be performed on the transmission. Damage most often occurs due to the transmission moving in the shipping case.


Use the straps in the shipping container to secure the transmission. The straps should be placed over the top of the transmission (Fig. 5), around the side of the bell housing. (Fig. 6)


Fig. 5


Fig. 6


Do not place a strap over the front edge of the bell housing. (Fig. 7) Routing the strap over the sharp bell housing edge may cause it to be cut and break during shipping. (Fig. 8)


Fig. 7


Fig. 8


– Thanks to Lane Rezek and Scott Barone



Security Code Input Message during Programming

During Service Programming System (SPS) programming on any 2009-2018 Buick, Cadillac, GMC or Chevrolet model, a security code input message with SPS error code E5659, M5304, and/or M5530 may be displayed in TIS2Web. (Fig. 9) The error codes may appear when programming any module. A related screen will also ask the user to input a security code. (Fig. 10)


Fig. 9


Fig. 10


The security code input message and related error codes are flags to identify concerns with released content in the SPS applications. Typically, a security code error message should not appear as the management of security code information is completed prior to release in the SPS application.


Contact the TechLine Customer Support Center (TCSC) for additional information about how to complete the necessary programming procedure.


– Thanks to Ryan Taylor

Checking Crankcase Pressures

Some 2016-2017 Encore and Cruze models equipped with the 1.4L engine (RPO LE2) and 2016-2017 Malibu and Volt models equipped with the 1.5L engine (RPO LFV, L3A) may have an engine oil leak at the crankshaft rear oil seal. Positive or negative crankcase pressures outside the normal operating range, due to a restriction in any of the induction system components, may cause the oil seal leak.


When testing for oil leaks, check for excessively positive or negative crankcase pressures using the Evaporative Emissions System Tester (EEST), J-41413. (Fig. 11) The EEST should be connected at the engine oil dipstick port.


Fig. 11


Connect the tester with the engine off, and then start the engine or record the pressure reading. Normal crankcase pressure readings for the 1.4L engine (LE2) and 1.5L engine (LFV, L3A) are between -1 and -5 inches of water in Park at hot idle. (Fig. 12)


Fig. 12


If the crankcase pressure is in the proper range, follow the diagnostics in the appropriate Service Information.


If the crankcase pressure is excessively positive, above 0 inches of water (0 inches of HG/vacuum), record the cylinder leakage readings and check for improper camshaft cover operation.


If the crankcase pressure is excessively negative, below -16 inches of water (-1 inches of HG/vacuum), inspect for any air induction restrictions in the front air intake duct to air cleaner housing or in the air cleaner housing. Look for any nesting materials, water intrusion, a kinked PCV tube or modifications to the air induction system.


Also inspect the air cleaner outlet duct for a blocked PCV fresh air port. (Fig. 13, #1) A closed port may cause excessive negative crankcase pressure. If the port is blocked, replace the camshaft cover assembly and retest for proper crankcase pressure.


Fig. 13


– Thanks to Raymond Haglund

Evaporative Pipe or Hose Damage

Some 2016-2017 Volt models built prior to October 3, 2016 that are equipped with the 1.5L engine (RPO L3A) may have an illuminated Check Engine light and Diagnostic Trouble Code (DTC) P0442 (EVAP System Small Leak Detected) may be set.


If these conditions are found, inspect the evaporative emissions purge solenoid pipe for damage from contacting the A/C evaporator core hose. (Fig. 14, #1; Fig. 15, #2; Fig. 16, #3)


Fig. 14


Fig. 15


Fig. 16



If there is damage to the evaporative emissions purge solenoid pipe (Fig. 17), replace the pipe. Position the new pipe to avoid contact with the A/C evaporative core hose.


Fig. 17


– Thanks to Raymond Haglund

Cruze Diesel Sounds after Turning Vehicle Off

Some 2017 Cruze models equipped with the 1.6L turbo diesel engine (RPO LH7) may produce a squeak, chirp or whine sound shortly after the vehcle is turned off. There are several components that may be responsible for these sounds.


Intake Manifold Runner Control Valve Actuator


The intake manifold runner control valve actuator (Fig. 18, #1) performs an integrity check to confirm that the mechanical link between the actuator and the intake manifold runner is still connected. This check may be heard cycling under the hood after the engine is turned off.


Fig. 18


Diesel Exhaust Fluid Pump


The Diesel Exhaust Fluid (DEF) pump and the DEF reverting valve may be heard from the right rear of the vehicle. The DEF pump and reverting valve relieve the DEF system pressure and clear the lines of DEF when the vehicle is turned off. The reverting valve opens to relieve the pressure and sends the fluid back to the DEF tank. It closes once the DEF lines are clear.


These sounds are normal operating characteristics and do not impact the performance of the vehicle.


Examples of these sounds can be heard in the March 2017 Emerging Issues seminar, 10217.03, in the U.S. and the April 2017 TAC Talk seminar in Canada.


– Thanks to Richard Vandesteene

Camshaft Actuator Solenoid Bolt Installation

There is a new bolt installation procedure for the camshaft actuator solenoid on the 3.0L V6 engine (RPO LGW), 3.6L V6 engine (RPO LGX), and 3.6L V6 engine (RPO LGZ) on the following models: 2016-2018 ATS, CTS, CT6, Camaro; 2017-2018 LaCrosse, XT5, Colorado, Canyon, and Acadia.


If during normal diagnosis for any camshaft oil control actuator solenoid conditions or when replacing the solenoid, it’s recommended to remove the black plastic bolt retainer from the solenoid bolt. (Fig. 19) Push out the black plastic bolt retainer from the top of the solenoid hold down ear and discard it.


Be sure to fully seat the solenoid to the engine before tightening the bolt to the specified torque.


Fig. 19


– Thanks to Aron Wilson

Service Know-How

10217.04V – Emerging Issues

April 13, 2017


The latest service topics from Brand Quality and Engineering are reviewed, including one pedal driving the 2017 Bolt EV (Fig. 20) and heated seat repairs on the 2016 Impala.


Fig. 20


To view Emerging Issues seminars:

• Log in to • Select Resources > Video on Demand > GM STC > Search Videos; or • Select Catalog to search for the course number, and then select View > Take or Continue Course

New Color Graphics for Component Locator and Harness Routing Views

Beginning with 2018 model year, the Electrical Component Locator and Harness Routing Views in the Service Information will be getting a new look. The graphics will feature different colors for components, harnesses, connectors, splices and grounds. The use of color will enhance the views and make it easier to identify the different parts. The color graphics are similar to the recently updated format of the Replacement Procedures in the Service Information.


All Electrical Component Locator and Harness Routing View graphics will adopt the new coloring scheme for the 2018 model year. Prior model years will not be updated. However, as some graphics apply to multiple model years, new and old style graphics may be found in the Service Information of earlier models.


The Electrical Component Locator and Harness Routing Views also continue to include the current mouse-overs and links to Connector End Views.






Compared to the previous graphics (Fig. 1, A), the color graphics (Fig. 1, B) make it easier to identify smaller components.


Fig. 1


Previous (Fig. 2, A) and new (Fig. 2, B) views showing two components next to each other


Fig. 2


Previous (Fig. 3, A) and new (Fig. 3, B) harness routing graphics


Fig. 3


Previous (Fig. 4, A) and new (Fig. 4, B) harness and ground graphics


Fig. 4


– Thanks to Lou Winters



Download the Latest AFIT Software Update

The latest software update for the CH-47976-210 Active Fuel Injector Tester (AFIT) is now available for download. The software can be accessed from the Service Workbench selection of “Special Tools & Software Updates” in GM GlobalConnect or at by selecting AFIT from the list of software downloads. (Fig. 5)


Fig. 5


Software Update


The software release — free of charge to GM dealerships — updates several aspects of the AFIT diagnostic tool:

• Additional coverage for 2017 and 2018 model year vehicles • Database support and programming for applications requiring G1, G2a, G3, G4, and G5 cables and G2b, G2c, G3b and SENT adapters • Windows 10 compatibility for PCs and laptops (GM approved 32-bit edition, 64-bit Professional edition) • Enhancement of USB/Serial communications • Includes other vehicle coverage additions and corrections since the prior release


For questions regarding the software release, contact Bosch Automotive Service Solutions Technical Support at 1-800-GM-TOOLS (1-800-468-6657).


– Thanks to Chuck Berecz



Beep in Background during Lengthy Bluetooth Phone Calls

A faint beep sound may be heard in the background during lengthy Bluetooth phone conversations on some 2016-2017 Equinox and Terrain models equipped with an infotainment system that contains Bluetooth (RPO UHQ; UFU with UP9). The beep sound is only heard by the person on the other end of the call. It is not heard by the person inside the vehicle.


TIP: Infotainment system RPO UHQ contains Bluetooth. (Fig. 6) Infotainment system RPO UFU only contains Bluetooth with RPO UP9 (Bluetooth). UP9 indicates Bluetooth is part of the infotainment system. Without UP9, Bluetooth is part of the OnStar module.


Fig. 6


The beep sound may not be noticed until five or more minutes into a conversation, so it may not heard during shorter calls. The sound starts as an occasional beep and eventually becomes more frequent, occurring about once per second.


This example of the beep sound demonstrates that it is very faint and does not interfere with the conversation. However, it will become more apparent during a pause in the conversation.


TIP: Do not confuse the beep sound with other common sounds used for various phone functions, such as call waiting or text notification.


If this condition is found, evaluate Bluetooth and radio performance to ensure that other conditions are not present. If there are other conditions, continue diagnosis following the appropriate Service Information. If no other conditions are evident, document the type of phone, phone network and the latest phone software version.


GM Engineering is currently evaluating the beeping condition. Do not attempt any repairs or replace any parts at this time.


– Thanks to Jamie Parkhurst



New Bosch U.S. Repair Center Location for Tech 2, MDI Repairs

The Bosch U.S. Repair Center in Goleta, California, which supports repairs to GM Tech 2, MDI and MDI 2, and Controller Area Network diagnostic interface (CANdi) module products (Fig. 7), is moving to a new repair center in Owatonna, Minnesota. There will not be any disruption to repair services due to the relocation. The transition to the new location is scheduled to be completed by May 1, 2017.


Fig. 7


All processes for making tool repairs remain the same. If you call the phone number on the back of the tool, you will be connected directly to the new Owatonna Repair Center. If you contact the 1-800-GM-TOOLS Bosch Call Center or the GM Techline Support Center, you will be referred to the new repair center.


TIP: If you are sending in a product for repairs, it should be shipped to the new Owatonna, Minnesota address.


New Contact Information


For all future repair requests, use the following contact information.




Online Repairs


The Bosch RepairTrack website (Fig. 8) provides the ability to manage the tool repair experience with an easy way to send tools in for repair and track them from the moment they leave your facility.


Fig. 8


To begin the tool repair process, sign in or register as a new user at After clicking the RRA (Repair Return Authorization) button on the left side of the home page, enter the requested information and follow the on screen instructions.


– Thanks to Kent Woiak



DTCs Set with Vehicle Parked for Extended Period

On some 2017 Encore and Trax models equipped with the 1.4L engine (RPO LUV), the Check Engine light may be illuminated (Fig. 9) and Diagnostic Trouble Codes (DTCs) P0335 (Crankshaft Position Sensor Circuit), P0340 (Intake Camshaft Position Sensor Circuit), or P0365 (Exhaust Camshaft Position Sensor Circuit) may be set. These conditions may only occur on a vehicle with low mileage or that was parked for an extended period of time. If all three DTCs are set, it may be due to a low state of charge in the battery during two consecutive engine starts.


Fig. 9


Follow the battery inspection test in the appropriate Service Information using the GR8 Battery Tester (EL-50313-20). If the battery passes the GR8 testing, clear the DTCs and start the vehicle twice to verify that the codes do not reset.


If the codes do not reset, do not attempt any additional repairs and return the vehicle to the customer.


If the codes reset, follow the diagnostics in the appropriate Service Information.


TIP: Always write the test code displayed by the GR8 Battery Tester on the repair order for any warranty purposes.


– Thanks to Raymond Haglund


Camaro 1LE Hood Wrap Service

All 2017 Camaro models (V6 and V8) equipped with the 1LE track package (RPO A1X, A1Y) feature a 3M Brand vinyl hood wrap. (Fig. 10)


Fig. 10


All 1LE hood wraps are black (Fig. 11) and are made of a matte finish vinyl material that is applied to the car before it arrives at the dealership.


Fig. 11


The vinyl hood wrap can be damaged if not cared for properly. Common issues are smudges or stains on the matte finish due to fingerprints, improper cleaning practices, or using cleaning products that remain on the hood wrap and create an outline on the vinyl surface. In some cases, there may be small rips or other physical damage to the hood wrap.


If the repairs are covered under warranty, photos of the entire car and damage to the hood wrap should be taken and submitted as a Field Product Report (U.S.) or Product Information Report (Canada).


Cleaning the Hood Wrap


The first step to servicing the hood wrap when any damage is found is to clean the hood. Hand washing is recommended using 3M or Meguiar’s car care products. Immediately rinse the vehicle and dry the hood wrap with a soft squeegee or soft cloth to help restore the graphic’s luster.


A touchless car wash may be used. To avoid water spotting, always drive the vehicle through the drying cycle.


To remove tar, bugs or other debris from the hood wrap, use a commercial cleaner designed for such use. Do not rub vigorously on the matte finish. Immediately wash the hood wrap with a recommended cleaning solution and rinse and dry the hood.


New Hood Wrap


If the damage remains after cleaning and it’s determined a new hood wrap is needed, the 1LE hood wrap decal can be obtained through GM service parts. The same part number applies to hood wraps for both 1LE V6 and V8 models.


It will be necessary to cut the holes in the hood wrap to accommodate the V8 hood vents. (Fig. 12)


Fig. 12


3M Certified Installer


The 1LE hood wrap must be installed by a 3M-certified technician. If your dealership or body shop does not have a 3M certified installer, contact 3M Technical Assistance at 1-800-328-3908 for contact information of a local 3M representative.


– Thanks to Ann Briedis



New TAC Action Centers for CT6 PLUG-IN, Camaro ZL1 and 1LE

The GM Technical Assistance Center (TAC) has established Action Centers for the 2017 CT6 PLUG-IN (RPO HP9) (Fig. 13) and the 2017 Camaro ZL1 (Fig. 14) and 1LE models. (Fig. 15)


Fig. 13


TAC Action Centers are designed to gather early feedback and provide support for the introduction of new GM models. Dealership service departments are asked to report all vehicle issues that require immediate attention, not just concerns that require technical assistance. The goal is to develop a quick resolution to any product concerns, such as fit and finish, performance, and operation.


Fig. 14


Action Centers have a direct connection to GM Engineering, Brand Quality and the assembly plant, which offer combined resources to immediately address product concerns seen in the dealership. Each TAC case is recorded and sent out to hundreds of people representing engineering, manufacturing, aftersales and other organizations across GM. Prompt test results and repairs from dealership technicians back to the Technical Assistance Center is critical to helping ensure a successful model launch.


Fig. 15


If any concerns are encountered with the new CT6 PLUG-IN or Camaro ZL1 and 1LE in your dealership, contact the Technical Assistance Center.


– Thanks to Stephen Jacob



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