GM Loan Tool Program Offers Cost-Effective Access to Special Tools

GM Loan Tool Program Offers Cost-Effective Access to Special Tools

The GM Loan Tool Program (LTP) supplements the U.S. Essential Tool Program as a cost-effective alternative to purchases of high cost and/or infrequently used special tools. It does not replace […]

January 16, 2020
Accessory Rear Seat Infotainment Turns Off When Doors are Closed

Accessory Rear Seat Infotainment Turns Off When Doors are Closed

The Accessory Rear Seat Infotainment (RSI) system on some 2018-2020 Enclave and Traverse models (Fig. 6) equipped with ventilated front seats (RPO KU9) may power off when the vehicle doors […]

January 16, 2020
DTC P0747 Setting at Engine Start-up

DTC P0747 Setting at Engine Start-up

DTC P0747 (Transmission Control Solenoid Valve 1 Stuck On) may be setting at engine start-up when the transmission is in Park on some 2017-2019 Cruze; 2017-2020 Malibu; 2018-2020 Enclave, Envision, […]

January 16, 2020
Engine Oil Overfill May Lead to Engine Vibration

Engine Oil Overfill May Lead to Engine Vibration

An engine vibration condition may occur when the vehicle is stationary or accelerating from a stop on some 2014-2018 Silverado, Sierra; 2015-2020 Escalade, Tahoe, Suburban, Yukon; 2016-2019 CTS-V; 2016-2020 Camaro; […]

January 16, 2020
Rear Fuel Tank and Fuel Transfer Conditions

Rear Fuel Tank and Fuel Transfer Conditions

Some 2015-2018 Silverado and Sierra models and 2019 Silverado 2500/3500 and Sierra 2500/3500 models equipped with the 6.6L Duramax diesel engine (RPOs LML, L5P) and dual fuel tanks (23.5 gallon/89 […]

January 16, 2020
Horn Sounds Muffled or Distorted

Horn Sounds Muffled or Distorted

The horn may sound muffled, distorted or sounds only the high note on some 2018-2020 Enclave and Traverse models. These horn conditions may be caused by a frequency that distorts […]

January 16, 2020
Front Brake Squeal Sound

Front Brake Squeal Sound

Some 2020 XT4 models may have a brake squeal sound at low speeds. (Fig. 17) The front brake pads on some models may be susceptible to producing brake squeal.   […]

January 16, 2020
Dinghy Towing the Colorado and Canyon

Dinghy Towing the Colorado and Canyon

If a 2017-2020 Colorado or Canyon model will not move or the transmission slips when shifted into any gear range immediately after flat towing the vehicle, inspect the internal components […]

January 16, 2020
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 […]

January 16, 2020
New Diagnostic Charge Battery Station Now Shipping to Dealerships

New Diagnostic Charge Battery Station Now Shipping to Dealerships

Early orders of the next generation EL-52800 Diagnostic Charge Battery Station (DCBS) are now shipping from GM Dealer Equipment. Its capabilities will make it easier and faster to test a […]

December 20, 2019
Battery Replacements and Warranty Claims

Battery Replacements and Warranty Claims

When testing or charging a battery in a vehicle that is in for service or is part of the dealership’s inventory, it’s critical to get an accurate diagnosis of the […]

December 20, 2019
New Dealer Infrastructure Guidelines Announced for 2020

New Dealer Infrastructure Guidelines Announced for 2020

GM has recently released revised Dealer Infrastructure Guidelines (DIG) for 2020. The guidelines outline the dealership technology needed to ensure reliable data communications for all dealers, including recommended personal computer […]

December 20, 2019
2020 CT5 TAC Action Center

2020 CT5 TAC Action Center

The GM Technical Assistance Center, or TAC, (U.S.) has established an Action Center for the all-new 2020 Cadillac CT5, the latest luxury sedan in Cadillac’s lineup. (Fig. 16)   Fig. […]

December 20, 2019
Silverado 4500HD/5500HD/6500HD Maximum Speed Based on Axle Ratio

Silverado 4500HD/5500HD/6500HD Maximum Speed Based on Axle Ratio

The 2019 Silverado 4500HD/5500HD/6500HD (Fig. 17) has a maximum vehicle speed that is based on the axle ratio of the truck. For example, if the truck has a 4.88 rear […]

December 20, 2019
Unavailable Driver Assistance Features Messages

Unavailable Driver Assistance Features Messages

Service Drivers Assist and Service Side Object Detection messages and/or a Super Cruise Temporarily Unavailable message may display on the Driver Information Center of some 2019-2020 CT6 models. DTC U0075 […]

December 20, 2019
Air Conditioning Blows Warm Air

Air Conditioning Blows Warm Air

Some 2017-2020 Impala models may have an air conditioning system that blows warm air. During diagnosis, it may be found that there is little to no refrigerant in the A/C […]

December 20, 2019
Engine Harness Chafing and Communication DTCs Set

Engine Harness Chafing and Communication DTCs Set

An illuminated Check Engine MIL may be seen while driving on some 2019-2020 XT4 models. One or more of the following DTCs may be set: B1011, P175F, and/or P25A2. In […]

December 20, 2019