Super Cruise Increases Compatible Highway Network

Super Cruise Increases Compatible Highway Network

GM is expanding the mileage of Super Cruise-enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise-enabled […]

August 9, 2019
New AFIT Adapters Released for 2019MY Engines

New AFIT Adapters Released for 2019MY Engines

The Active Fuel Injector Tester (AFIT) Spark Ignited Direct Injection (SIDI) Diagnostic Kit, essential tool CH-47976, was released several years ago for port and direct injected engine applications (Fig. 7) […]

August 9, 2019
Latest AFIT Software Adds 2020MY Vehicles

Latest AFIT Software Adds 2020MY Vehicles

The latest software update (CH-47976-SWV11) for the CH-47976 Active Fuel Injector Tester (AFIT) has recently been released. The new update adds 2020 model year applications (as of July 24, 2019). […]

August 9, 2019
Updated Dealer Infrastructure Guidelines Outline Recommended New PC Specs

Updated Dealer Infrastructure Guidelines Outline Recommended New PC Specs

The recently released GM Dealer Infrastructure Guidelines (DIG) have been updated with several changes for recommended dealership infrastructure equipment. The DIG includes guidelines that are organized in Good, Better, and […]

August 9, 2019
Active Fuel Management/Dynamic Fuel Management on GM Models

Active Fuel Management/Dynamic Fuel Management on GM Models

Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) is available on a number of recent GM models to help improve fuel economy, including 2014-2019 Corvette, Silverado LD, Sierra Limited; […]

August 9, 2019
Hydraulic Brake Conditions on Hybrid Vehicles Update

Hydraulic Brake Conditions on Hybrid Vehicles Update

Several brake system conditions that may be found on some 2016-2019 Volt and Malibu Hybrid (RPO HP4) models could be related to the hydraulic components. Be sure to not overlook […]

August 9, 2019
Possible Open Fuse in Fuse Block–Battery

Possible Open Fuse in Fuse Block–Battery

Some 2019 Silverado and Sierra models equipped with the 2.7L 4-cylinder engine (RPO L3B) may have an engine will not crank condition. If this condition is found and the starter […]

August 9, 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 […]

August 9, 2019
New Turbocharged 2.7L 4-Cylinder Engine Powers Full-Size Trucks

New Turbocharged 2.7L 4-Cylinder Engine Powers Full-Size Trucks

The new 2.7L turbocharged 4-cylinder engine (RPO L3B) available on 2019-2020 Silverado 1500 (LT and RST models) and Sierra 1500 (SLE and Elevation models) offers capability and efficiency in a […]

July 31, 2019
LIN Bus Diagnosis

LIN Bus Diagnosis

Smart motors, switches, and sensors that use Local Interconnect Network (LIN) buses can be found on many 2014-2020 GM passenger cars and trucks. The LIN bus consists of a single […]

July 31, 2019
Cleaning and Transferring Components After Severe Internal Engine Damage

Cleaning and Transferring Components After Severe Internal Engine Damage

When replacing an engine due to internal damage on 2019 and prior GM passenger cars and trucks, extreme care should be taken when transferring components from the failed engine to […]

July 31, 2019
DEF Injector Replacement

DEF Injector Replacement

Some 2016-2019 Chevrolet Low-Cab Forward (LCF) trucks equipped with the 3.0L diesel engine (RPO IZ3) or 5.2L diesel engine (RPO I1B) may have an illuminated Check Engine MIL and DTC […]

July 31, 2019
Installing the Rearview Camera Kit

Installing the Rearview Camera Kit

The factory-provided Rearview Camera Kit (RPO 5N5) available on 2019 Silverado 1500 and Sierra 1500 models and 2020 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models include a camera, extension harness and […]

July 31, 2019
Throttle Body Connector Terminal Tension

Throttle Body Connector Terminal Tension

Some 2019 XT4 models equipped with the 2.0L 4-cylinder engine (RPO LSY) and 2019 Silverado 1500 and Sierra 1500 models equipped with the 2.7L 4-cylinder engine (RPO L3B) may have […]

July 31, 2019
6.6L V8 Gasoline Engine Exchange

6.6L V8 Gasoline Engine Exchange

The 6.6L V8 gasoline engine (RPO L8T) (Fig. 20) available on 2020 Silverado 2500/3500 and Sierra 2500/3500 models is now under the engine exchange program for the 2020 model year. […]

July 31, 2019
Whine Sound from Under Vehicle

Whine Sound from Under Vehicle

A whine sound may be heard coming from under the vehicle on some 2019-2020 Envision models equipped with the 2.0L 4-cylinder engine (RPO LTG) and the 9T60 automatic transmission (RPO […]

July 31, 2019