New GM Service Technical College App Provides Quick Access to Training Information

New GM Service Technical College App Provides Quick Access to Training Information

If you’re looking for more information about World Class Technician certification, want to download the Automotive Technician Recruiting & Retention Dealer Playbook, or would like more details about the new […]

May 30, 2019
Share Your Feedback on GM Service Information

Share Your Feedback on GM Service Information

The GM Service Information is updated daily in order to provide technicians with the latest, most accurate information available to quickly and correctly service GM vehicles. By taking a moment […]

May 30, 2019
Viewing and Emailing GDS 2 Session Files Helps with Diagnosis

Viewing and Emailing GDS 2 Session Files Helps with Diagnosis

The GM Global Diagnostic System 2 (GDS 2) provides for quick and simple data acquisition when communicating and diagnosing vehicle on-board electrical systems. While using GDS 2, it records all […]

May 30, 2019
Proper GM Accessory Assist Step Installation

Proper GM Accessory Assist Step Installation

The GM Accessory Assist Steps available on 2014-2019 Silverado, Sierra; and 2015-2019 Tahoe, Suburban, Yukon, Colorado and Canyon models help make it easier to get in and out of the […]

May 30, 2019
Corvette ZR1 Rear Spoiler Adjustment

Corvette ZR1 Rear Spoiler Adjustment

The rear spoiler of the 2019 Corvette ZR1 (Fig. 18) is installed at the dealership during the Pre-Delivery Inspection (PDI). After installation of the rear spoiler, it may be noticeable […]

May 30, 2019
Rattle Sound near Front of Engine

Rattle Sound near Front of Engine

The 2019 XT4 may have a rattle sound heard near the front of the 2.0L 4-cylinder engine (RPO LSY) due to a stuck or collapsed timing chain tensioner and, as […]

May 30, 2019
PCV Crankcase Pressure Control Diaphragm

PCV Crankcase Pressure Control Diaphragm

DTC P0171 (Fuel Trim System Lean) may be set in the Engine Control Module (ECM) and the Check Engine MIL may be illuminated on some 2011-2016 Cruze; 2012-2015 Volt; 2012-2019 […]

May 30, 2019
Whine Sound from Under Center of Vehicle

Whine Sound from Under Center of Vehicle

Some 2016-2017 CT6 models may have an intermittent whine sound from under the vehicle. The sound may be more pronounced under acceleration. The sound may be caused by contact between […]

May 30, 2019
Updated Essential Tool GE-52200-A Powertrain Lift Table Now Shipping

Updated Essential Tool GE-52200-A Powertrain Lift Table Now Shipping

The updated GE-52200-A Powertrain Lift Table (Fig. 1) allows for easy removal and installation of powertrain and chassis components as well as fuel tanks, suspension components, and EV/PHEV high voltage […]

May 17, 2019
What to Do Next  —  Q&A on the End of Windows 7

What to Do Next — Q&A on the End of Windows 7

The end of Windows 7 is rapidly approaching. Microsoft has announced that it will end support of Windows 7 Professional on January 14, 2020. In addition, the most recent GM […]

May 17, 2019
Dealer Case Management Enhancements Increase Communication, Speed Up Response Times

Dealer Case Management Enhancements Increase Communication, Speed Up Response Times

The Dealer Case Management (DCM) system (U.S.) enables dealership technicians to create, view and update GM Technical Assistance Center (TAC) cases in real time, reducing the time spent waiting on […]

May 17, 2019
Camshaft Position System Performance DTCs Set in History

Camshaft Position System Performance DTCs Set in History

The Check Engine MIL may be illuminated on some 2016-2018 ATS, CT6, CTS; 2017-2018 LaCrosse, XT5; and 2018 Enclave, Regal, and Traverse models equipped with the 3.0L V6 engine (RPO […]

May 17, 2019
Click Sound from the Torque Tube

Click Sound from the Torque Tube

Some 2018-2019 Equinox and Terrain models equipped with All-Wheel Drive (AWD) or driver-selectable Four-Wheel Drive (4WD) may have a click sound originating from the rear of the vehicle when traveling […]

May 17, 2019
Coolant Entering Engine Cylinders

Coolant Entering Engine Cylinders

Some 2014-2018 Silverado 1500, Sierra 1500; 2015-2019 Escalade, Tahoe, Suburban, Yukon; 2016-2019 CTS-V, Camaro, Corvette; and 2019 Silverado and Sierra models equipped with the 4.3L engine (RPO LV1, LV3), 5.3L […]

May 17, 2019
Intake Manifold Vacuum Leak

Intake Manifold Vacuum Leak

The Check Engine MIL may be illuminated along with DTCs P0171 (Fuel Trim System Lean Bank 1) and/or P0174 (Fuel Trim System Lean Bank 2) set in the Engine Control Module (ECM) […]

May 17, 2019
Infotainment Screen Flicker

Infotainment Screen Flicker

The infotainment screen may flicker occasionally on some 2019 Volt models. The screen flickering (Fig. 18) may be due to the component packaging inside the instrument panel, which may not […]

May 17, 2019
GM Service Know-How

GM Service Know-How

The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics from GM Brand Quality and Engineering covered in […]

May 17, 2019