TechLink – Page 60

DTCs Set in the TCM

Some 2020 Corvettes may have an illuminated Check Engine MIL and a reduced engine power message on the instrument cluster with no noticeable performance issues. DTCs P1967 (Serial Data Message […]

October 28, 2020 —

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

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

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

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

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

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

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

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

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

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

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

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

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 —