Bigger, stronger and more powerful than ever, the completely new 2020 Chevrolet Silverado 2500HD/3500HD (Fig. 1) and GMC Sierra 2500HD/3500HD (Fig. 2) trucks offer increased capability and an expanded range […]
The all-new 2020 Silverado HD (Fig. 9) and Sierra HD trucks offer two powertrain choices: the all-new 6.6L V8 gasoline engine (RPO L8T) paired with the 6-speed 6L90 automatic transmission […]
The all-new Allison 10-speed 10L1000 automatic transmission (RPO MGM, MGU) available on 2020 Silverado HD and Sierra HD models equipped with the 6.6L Duramax diesel engine combines enhanced performance, fuel […]
A spray-in bed liner (RPO CGN, PDL) is available on 2013-2014 Silverado HD 2500/3500, Sierra HD 2500/3500; 2014 Silverado 1500, Sierra 1500; and 2015-2019 Colorado, Silverado, Canyon and Sierra models. […]
The 2019 Silverado 4500HD/5500HD/6500HD is equipped with the 6.6L Duramax diesel engine (RPO L5D). The engine uses heat shrink clamps to secure the engine coolant hoses. (Fig. 24) If a […]
The ringtone on a mobile phone may sound continuously through the vehicle speakers after an incoming call on some 2018-2019 Sonic, Trax, Terrain; and 2019 Blazer, Camaro, Colorado, Equinox, Malibu, […]
An engine misfire condition and DTC P0300 (Engine Misfire Detected) may be found on some 2016-2019 Cruze models with the 1.4L engine (RPO LE2); 2016-2019 Malibu models with the 1.5L […]
The 10L80 and 10L90 10-speed automatic transmissions (RPO MHS, MHW, MF6, MGL, MQB) available on 2017-2019 Camaro, 2018-2019 Escalade, Tahoe, Yukon Denali, 2019 CT6, Silverado 1500, Sierra 1500, and Suburban […]
The all-new 2020 XT6 (Fig. 1) is Cadillac’s newest entry in the three-row luxury SUV market. Available as Premium Luxury and Sport models, the XT6 offers a luxurious cabin, refined […]
When reviewing Engine Mechanical repair procedures in the Service Information, technicians will find instructions divided into Repair Instructions – On Vehicle and Repair Instructions – Off Vehicle. As a result, […]
Some 2014-2018 Silverado 1500, Sierra 1500; 2015-2019 Escalade, Tahoe, Suburban, Yukon; and 2019 Silverado LD and Sierra Limited models may have a brake pulsation or a grinding sound coming from […]
The GM Service Information on the 6.6L diesel engine (RPO LML) and 1.4L and 1.5L gasoline engines (RPO LE2, LFV) was recently updated with several new service procedures and labor […]
Vehicle speed may be limited on some 2016-2018 CT6 PLUG-IN models (RPO HP9) equipped with the 2.0L 4-cylinder engine (RPO LTG) and automatic-hybrid electric transmission (RPO MRD). DTC P0747 (Transmission […]
If DTC P3075 (Engine Coolant Pump Low Current Performance) is set on a 2019 XT4 equipped with the 2.0L 4-cylinder engine (RPO LSY) or a 2019 Silverado 1500 or Sierra […]
The charge air cooler outlet air tube may be disconnected on some 2019 Equinox, Terrain, and Malibu models equipped with the 1.5L 4-cylinder engine (RPO LYX). As a result, the […]
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 […]
New GM Service Technical College App Provides Quick Access to Training Information
Share Your Feedback on GM Service Information
Viewing and Emailing GDS 2 Session Files Helps with Diagnosis
Proper GM Accessory Assist Step Installation
Corvette ZR1 Rear Spoiler Adjustment
Rattle Sound near Front of Engine
PCV Crankcase Pressure Control Diaphragm
Whine Sound from Under Center of Vehicle
Updated Essential Tool GE-52200-A Powertrain Lift Table Now Shipping
What to Do Next — Q&A on the End of Windows 7
Dealer Case Management Enhancements Increase Communication, Speed Up Response Times
Camshaft Position System Performance DTCs Set in History
Click Sound from the Torque Tube
Coolant Entering Engine Cylinders
Intake Manifold Vacuum Leak
Infotainment Screen Flicker
GM Service Know-HowPropulsion System Lift Table
Trailer Presence Tester
Diagnostic Charge
Battery Station
The next generation Diagnostic Charge Battery Station (DCBS), available beginning in July 2019 from GM Dealer Equipment, promises to make battery testing faster and easier. Integrating the latest technology, the […]
Techline computers in GM dealerships running a Windows 7 Professional operating system (OS) must be replaced by December 31, 2019 in order to receive assistance from the Techline Customer Support […]
2019 GM models feature a variety of technology and new systems that may be unfamiliar to technicians and service consultants in GM dealerships. Following are several videos highlighting new features […]
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