Battery Condition Prognostics Integrated into Techline Connect

Battery Condition Prognostics Integrated into Techline Connect

Techline Connect, GM’s next generation diagnostic application, has released a new tool to help determine the condition of a vehicle’s battery. Battery Condition is determined using “Power of Green;” a […]

October 19, 2020
New GM Global Electronic Parts Catalog Release Offers Multiple Enhancements, Search Functions

New GM Global Electronic Parts Catalog Release Offers Multiple Enhancements, Search Functions

A new version of the GM Global Electronic Parts Catalog (EPC) will be released on October 17, 2020 with a number of enhanced features and functionality. (Fig. 1) The Q.link™-supported […]

October 13, 2020
New Rear Seat Media System Offers a Choice of HD Entertainment, Headphone Options

New Rear Seat Media System Offers a Choice of HD Entertainment, Headphone Options

The Rear Seat Media system available in the new 2021 Tahoe, Suburban, Yukon, and Escalade offers high-definition entertainment using two touchscreen displays and two infrared headsets. (Fig 8) Rear seat […]

October 13, 2020
3rd-Row Headrest Service Kit

3rd-Row Headrest Service Kit

After cycling a 3rd-row seat to the up position on some 2021 Tahoe, Suburban and Yukon models, the headrest may not return to or stay in the upright position. In […]

October 13, 2020
Loose Turbocharger Actuator Bolts

Loose Turbocharger Actuator Bolts

Some 2020-2021 Silverado and Sierra models equipped with the 3.0L turbocharged Duramax diesel engine (RPO LM2) may exhibit a lack of performance along with DTCs P003A (Turbocharger Boost Control Position […]

October 13, 2020
Potential Oil Leak from Camshaft Carrier Gasket

Potential Oil Leak from Camshaft Carrier Gasket

A potential oil leak from the camshaft carrier gasket may be found on some 2019 CT6; 2019-2021 XT4; 2020-2021 Acadia, Blazer, CT4, CT5, XT5 and XT6 models equipped with the […]

October 13, 2020
Particulate Matter Sensor Protection Tube Performance Diagnostic Setting False DTC

Particulate Matter Sensor Protection Tube Performance Diagnostic Setting False DTC

The particulate matter sensor protection tube performance diagnostic may set a false DTC P1488 (Particulate Matter Sensor Temperature Circuit High Voltage) on some 2020 Silverado and Sierra trucks equipped with […]

October 13, 2020
Green, Pixelated Night Vision Screen

Green, Pixelated Night Vision Screen

Some 2020-2021 XT5 and XT6 models equipped with Night Vision (RPO UV3) may show a green, pixelated display in the Driver Information Center when Night Vision is selected. There are […]

October 13, 2020
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 […]

October 13, 2020
Proper Terminal Testing and Diagnosis

Proper Terminal Testing and Diagnosis

Damage to electrical terminals can lead to inaccurate test results, difficult diagnosis and system failures. When servicing a suspected wire/terminal issue, be sure to check for the following conditions: Any […]

September 30, 2020
Tips for Installing LPO Accessory Wheels

Tips for Installing LPO Accessory Wheels

When installing Limited Production Option (LPO) accessory wheel kits sourced from your local ADI (Fig. 4), a TPMS (Tire Pressure Monitoring System) learn is required as part of the wheel […]

September 30, 2020
Returning LPO Transit Wheels

Returning LPO Transit Wheels

When GM dealerships (U.S.) order new vehicles with Limited Production Option (LPO) accessory wheel kits, the vehicles will arrive at the dealership equipped with transit wheels. The LPO wheels (Fig […]

September 30, 2020
Camaro 1LE Vinyl Hood Wrap Update

Camaro 1LE Vinyl Hood Wrap Update

All 2017–2021 Camaro 1LE models feature a vinyl hood wrap that is applied before the cars arrive at the dealership. (Fig. 10) Several procedures should be followed to clean the […]

September 30, 2020
Delayed Transmission Engagement

Delayed Transmission Engagement

Some 2018-2019 ATS, CTS, CT6, Corvette; 2018-2020 Express; 2018-2021 Camaro, Colorado, Silverado, Canyon, Savana, Sierra; and 2021 CT4 models equipped with the 8L45 or 8L90 8-speed automatic transmission (RPO M5T, […]

September 30, 2020
The Importance of Using the Correct Fasteners

The Importance of Using the Correct Fasteners

Using the correct fastener in a given location can’t be stressed enough when performing repairs on today’s modern vehicle designs. Here’s an example why. A recent analysis of an air […]

September 30, 2020
DTC P0708 Set in the Transmission Control Module

DTC P0708 Set in the Transmission Control Module

Some 2020 CT4, Camaro, Escalade, Tahoe, Suburban, Yukon, Silverado 1500, Sierra 1500, Express, and Savana models equipped with an 8L45, 8L90, 10L60, 10L80, or 10L90 automatic transmission (RPO M5M, MF6, […]

September 30, 2020
Turn Transport Mode Off Before New Vehicle Delivery

Turn Transport Mode Off Before New Vehicle Delivery

Transport Mode is intended for use when shipping new GM models over long distances from the assembly plant. When enabled, It reduces the parasitic electrical load on the battery when […]

September 30, 2020