Updated Service Information with Easier-to-Use Format Expands to More Models for 2021

Updated Service Information with Easier-to-Use Format Expands to More Models for 2021

Technicians using the GM Service Information (SI) will soon find updated Removal/Installation and Replacement procedures with more detailed steps and fewer procedure links to other SI documents. (Fig. 3) The […]

February 10, 2021
Low Battery Charge After Vehicle Sits for a Short Time

Low Battery Charge After Vehicle Sits for a Short Time

Some 2021 Express and Savana vans equipped with the 6.6L V8 engine (RPO L8T) may have a low battery charge after sitting for a short period of time. The low […]

February 10, 2021
Escalade OLED Infotainment System Demo Mode

Escalade OLED Infotainment System Demo Mode

The 2021 Cadillac Escalade features the automotive industry’s first OLED (Organic Light Emitting Diode) Infotainment System. With 38 inches (965 mm) of total diagonal display area, it has twice the […]

February 10, 2021
Faulty Emission Reduction Fluid Tank Heater

Faulty Emission Reduction Fluid Tank Heater

The Emission Reduction Fluid Tank heater may be faulty on some 2020 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the […]

February 10, 2021
Auxiliary Transmission Oil Cooler Eliminated

Auxiliary Transmission Oil Cooler Eliminated

2021 Express and Savana models equipped with the 4.3L V6 engine (RPO LV1) or 6.6L V8 engine (RPO L8T) may have a build list that includes a V14 auxiliary transmission […]

February 10, 2021
Exhaust Odor in Cabin or Engine Compartment

Exhaust Odor in Cabin or Engine Compartment

An exhaust odor in the cabin or in the engine compartment may be noticed on some 2020-2021 Silverado and Sierra models and 2021 Tahoe, Suburban, Yukon, and Escalade models, equipped […]

February 10, 2021
Misfire Due to Collapsed Lifter

Misfire Due to Collapsed Lifter

Some 2019-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) may have a misfire condition […]

February 10, 2021
New STC Course Catalog for 2021

New STC Course Catalog for 2021

The new 2021 GM Service Technical College (STC) Course Catalog (U.S.) is now available on the Service Technician Training, Recruiting, Retention, and Recognition App on GlobalConnect and on GMSTC.com. The […]

February 10, 2021
Programming Radio Software – Check the Build Number

Programming Radio Software – Check the Build Number

The software on many 2018-2021 GM models equipped with an Infotainment 3 System (RPOs IOR, IOS, IOT, IOU, IOV) (Fig. 1) can be updated over the air to the vehicle […]

January 27, 2021
Top XFuel Earners Recognized as Mark of Excellence Xccelerate Pilot Program Ends

Top XFuel Earners Recognized as Mark of Excellence Xccelerate Pilot Program Ends

The Xccelerate mobile application, launched as a pilot program in the 2020 Mark of Excellence (MOE) program (U.S.), has concluded. The interactive Xccelerate app provided technicians with more opportunities to […]

January 27, 2021
Interior Door Handle Replacement

Interior Door Handle Replacement

The chrome may be starting to peel off the interior door handle on some 2016-2020 Camaro models. (Fig. 9) The chrome separation may be noticed at the parting line of […]

January 27, 2021
GE-52250 PowerSmoke Diagnostic Leak Detector Warranty Upgrade (U.S.)

GE-52250 PowerSmoke Diagnostic Leak Detector Warranty Upgrade (U.S.)

The GE-52250 PowerSmoke Diagnostic Leak Detector is a GM Essential Tool that can be used to help find induction and exhaust system leaks on 2010-2020 GM models equipped with a […]

January 27, 2021
Air in the Cooling System

Air in the Cooling System

A water rush or gurgle sound from the heater core at the center of the instrument panel on some 2015-2019 Colorado and Canyon models may be caused by air ingestion […]

January 27, 2021
Speed Limited Due to Low Transmission Fluid

Speed Limited Due to Low Transmission Fluid

A Speed Limited or Reduced Propulsion Power message may display on the Driver Information Center (DIC) along with reduced power on some 2016-2019 Volts. The message may display for a […]

January 27, 2021
Cleaning and Disinfecting Infotainment Screens

Cleaning and Disinfecting Infotainment Screens

A ghost or phantom touch, where random touch inputs occur on the infotainment screen display, and/or the infotainment display is non-responsive to touch immediately after having been cleaned, wiped, or […]

January 27, 2021
GM Service Know-How Emerging Issues

GM Service Know-How Emerging Issues

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 […]

January 27, 2021
Uneven or Leaning Air Ride Adaptive Suspension

Uneven or Leaning Air Ride Adaptive Suspension

Some 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the available Air Ride Adaptive Suspension (RPO F47) may have a suspension trim height that is too high or too […]

January 14, 2021
Configuring Driver Assistance Systems

Configuring Driver Assistance Systems

From Forward Collision Alert to Reverse Automatic Braking, the advanced driver assistance systems available on current GM models offer features that range from providing alerts and warnings to hands-free driving […]

January 14, 2021
Latest Dealer Infrastructure Guidelines Released for 2021

Latest Dealer Infrastructure Guidelines Released for 2021

GM has recently released the latest Dealer Infrastructure Guidelines (DIG) for 2021. The guidelines outline the dealership technology needed to ensure reliable data communications for all dealers, including recommended personal […]

January 14, 2021
Rear Axle Clunk Sound

Rear Axle Clunk Sound

Some 2015-2021 Colorado and Canyon models may have a clunking sound heard from the rear axle area when driving over railroad tracks and/or entering or exiting parking lots and driveways. […]

January 14, 2021