Monthly Archives: October 2015

New Bulletin Numbering System for North America

Perform a Service Bulletin search for a 2015 GM model in the Service Information and you may notice that the bulletin numbers in the search results look a little different. You’ll see a bulletin number such as #15-NA-28 (Fig. 1) … Continue reading

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Share Your Comments on GM Service Information

The goal of the daily-updated GM Service Information is to provide technicians with the information they need to quickly and accurately service GM vehicles. By taking a moment to submit feedback on the Service Information, your comments help ensure the … Continue reading

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Supercharger Noise Diagnosis

The supercharger on the 6.2L V8 engine (RPO LT4) of the 2015-2016 Corvette Z06 and 2016 CTS-V produces distinct sounds at different engine RPMs.   The sound of the supercharger is different than other various engine noises, such as the … Continue reading

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What Do You Think? Take the 2015 TechLink Reader Survey

At TechLink, our goal is to provide the latest GM technical news and repair information to help you quickly and accurately repair the vehicles that come into your service department every day.   We cover a wide range of topics, … Continue reading

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Aftermarket Equipment Connected to Multi-Media Ports

Various infotainment conditions caused by aftermarket equipment connected to the multi-media, USB or auxiliary input ports may be found on some 2013-2015 ATS, CTS, SRX, and XTS models equipped with the CUE system; 2014-2015 Regal and LaCrosse models equipped with … Continue reading

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Preventing Overhead Entertainment Display Damage

The Warranty Parts Center has received several overhead entertainment displays from 2014-2015 Escalade, SRX; 2015 Silverado, Suburban, Tahoe, Sierra, and Yukon models, equipped with the Rear Seat Entertainment Package (RPO U42), (Fig. 10) with the LVDS (Low Voltage Differential Signaling) … Continue reading

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Hands-Free Liftgate Operation

The hands-free activation of the power liftgate may be temporarily disabled under some conditions on 2015-2016 Escalade models, Suburban, Tahoe and Yukon models equipped with the Hands-Free Power Liftgate (RPO TC2). (Fig. 12)   Fig. 12   For example, after … Continue reading

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Ambient and HVAC Temperature Display Conditions

On some 2012-2016 Verano, 2013-2015 Malibu, and 2016 Chevrolet Malibu Limited models, the driver and passenger HVAC temperature settings may be displayed in Celsius or the outside ambient temperature may be missing from the radio/HVAC (or infotainment) display. (Fig. 16) … Continue reading

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Infotainment System Programming: USB or SPS

Programming the infotainment systems (Fig. 1) on GM vehicles often involves downloading the latest calibrations from TIS2Web through the Service Programming System (SPS). This is referred to as SPS programming for the infotainment components, just as is done on many … Continue reading

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Are You Programming or Reprogramming?

What’s the difference between setting up a control module, programming and reprogramming? Each one is done at different times based on the state of the control module.   Here are some definitions that may make it easier to understand the … Continue reading

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Apple CarPlay Now Available in Many 2016 GM Models

The 2016 LaCrosse, Regal, ATS, CTS, ELR, Escalade models, Camaro, Colorado Corvette, Impala, Malibu, Silverado, Suburban, Tahoe, Volt, Canyon, Sierra and Yukon models equipped with radio RPOs IO5, IO6, IOA and IOB include the new Apple CarPlay feature. (Fig. 3) … Continue reading

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What Do You Think? Take the 2015 TechLink Reader Survey

At TechLink, our goal is to provide the latest GM technical news and repair information to help you quickly and accurately repair the vehicles that come into your service department every day.   We cover a wide range of topics, … Continue reading

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Adaptive Cruise Control and Lane Keep Assist Inoperative in High Temperatures

On some 2013-2016 ATS, SRX, XTS; 2014-2016 CTS (VIN A); and 2015-2016 Escalade models equipped with Adaptive Cruise Control (RPO KSG) and Lane Keep Assist (RPO UHX), these features may be inoperative after the vehicle has been parked in direct … Continue reading

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UPDATE: Steering Bind after I-Shaft Removal

The steering may bind when turning the steering wheel after having removed the I-Shaft for a service procedure on some 2015-2016 Colorado and Canyon models. The binding may be caused by the I-Shaft nose plug sliding down the inside of … Continue reading

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Engine Timeout after Extended Idle

An engine run timeout feature is standard on all 2015-2016 Tahoe, Suburban, Yukon models and Escalade models equipped with Pushbutton Keyless Start (RPO BTM). (Fig. 6)   Fig. 6   2015 Models without RPO AVF (Built before October 6, 2014) … Continue reading

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Share Your Thoughts. 2015 Service Advisor Satisfaction Survey Ends October 25

The 2015 Service Advisor Satisfaction Survey is taking place now for U.S. dealerships. All service advisors at GM dealerships are encouraged to voice their opinions. The industry-wide service technician survey will take place in 2016.   GM and other automotive … Continue reading

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Service Know-How

10215.10D – Emerging Issues October 8, 2015   To view Emerging Issues seminars: • Log in to www.centerlearning.com –   Select Resources > Service Know-How/TECHAssist > Emerging Issues > Searchable Streaming Video; or –   Select Catalog to search for the course … Continue reading

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Bulletin Review – September 2015

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