Signing In to Techline Connect

Signing In to Techline Connect

The Techline Connect (TLC) application does not support GlobalConnect user IDs or PC login IDs that include spaces or special symbols. Using IDs with these characters may lead to possible […]

June 14, 2024
New Techline Connect Install/Uninstall Guide Addresses Application Errors

New Techline Connect Install/Uninstall Guide Addresses Application Errors

If an error occurs when launching the Techline Connect (TLC) application, the first solution is often to try to restart TLC. However, it the application still does not start correctly, […]

June 14, 2024
Loss of Forward Gear on CVT Transmission

Loss of Forward Gear on CVT Transmission

Some 2019-2024 Malibu; 2020-2024 Encore GX; and 2021-2024 Trailblazer models equipped with the VT40 CVT transmission (RPO MRG) may have a loss of forward gear or slipping condition. DTC P2714 […]

June 14, 2024
Transmission Out-of-Round Snap Rings

Transmission Out-of-Round Snap Rings

A slipping Drive or no Drive condition may be present along with DTCs P0746 (Transmission Control Solenoid Valve 1 Stuck Off) or P0747 (Transmission Control Solenoid Valve 1 Stuck On) […]

June 14, 2024
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. This month the seminar highlights operation of the Next One HFO HVAC machine. […]

June 14, 2024
Ceramic Glow Plug Replacement

Ceramic Glow Plug Replacement

Successfully replacing ceramic glow plugs (Fig. 1) in diesel engines requires carefully handling of the plugs and following the proper service procedures in order to prevent potential performance issues.   […]

May 31, 2024
Techline Update Manager

Techline Update Manager

The Techline Update Manager application is currently part of a staggered update to Techline Connect, with additional dealerships receiving the update weekly. The new Techline Update Manager (TUM), which is […]

May 31, 2024
Front Stabilizer Bar Links Installation Update

Front Stabilizer Bar Links Installation Update

The stabilizer bar connects between the left and right shock assemblies through the stabilizer link and stabilizer shaft insulators on 2023-2024 LYRIQ; and 2024 Blazer EV and Equinox EV models. […]

May 31, 2024
May Service Newsletter from the Experts at GM TAC

May Service Newsletter from the Experts at GM TAC

The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the May GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

May 31, 2024
Inoperative Components After Front View Camera Replacement

Inoperative Components After Front View Camera Replacement

Several features, including Forward Collision Alert and Lane Keep Assist, may not operate properly on 2018-2024 Equinox and Terrain models (equipped with RPOs UHX, UHY, UEU, UE4, UKC, UKJ) after […]

May 31, 2024
Green Means Power Flow: Identifying EV Charging Status Indicators

Green Means Power Flow: Identifying EV Charging Status Indicators

The green, blue and red charging status indicators (Fig. 2) on new GM electric vehicles (EVs), including the 2023-2024 LYRIQ; 2024 Blazer EV, Equinox EV and Silverado EV, can quickly […]

May 24, 2024
Misrouted Oxygen Sensor Wiring Harness

Misrouted Oxygen Sensor Wiring Harness

An engine misfire condition and an illuminated Check Engine MIL may be found on some 2024 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models equipped with the 6.6L V8 engine (RPO L8T). […]

May 24, 2024
Google Maps Application Update

Google Maps Application Update

Due to a recent update of the Google Maps application, an issue may arise in which the infotainment system (RPO IOK, IVD, IVE) has a persistent “Offline” icon in maps […]

May 24, 2024
Resetting the Infotainment System

Resetting the Infotainment System

The infotainment system (RPO IOK, IOR, IOS, IOT, IOU, IOV, IVA, IVD, IVE) on some 2023-2024 models (Fig. 16) may need to be reset if a black screen appears or […]

May 24, 2024
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. This month the seminar reviews the preparation guidelines for Hybrid/EV battery shipping. (Fig. […]

May 24, 2024
Take the TAC Action Center Survey Today — Survey Closes Friday

Take the TAC Action Center Survey Today — Survey Closes Friday

The GM Technical Assistance Center (TAC) is inviting all technicians who have recently contacted a TAC Action Center to take a brief satisfaction survey. The results of the survey will […]

May 6, 2024
Corvette E-Ray Delivers Electrified AWD Performance

Corvette E-Ray Delivers Electrified AWD Performance

The new 2024 Corvette E-Ray pairs two separate propulsion systems to provide naturally aspirated V8 power with electrified responsiveness powered by eAWD (All-Wheel Drive), delivering all-weather capabilities with impressive performance. […]

April 30, 2024
Corvette E-Ray 12-Volt Lithium-Ion Battery

Corvette E-Ray 12-Volt Lithium-Ion Battery

The 2024 Corvette E-Ray uses two lithium-ion batteries — one for high-voltage functions with the front electric axle and one for low-voltage operations that replaces the traditional lead-acid 12V battery. […]

April 30, 2024
Power Liftgate Battery Draw Conditions

Power Liftgate Battery Draw Conditions

There may be a battery draw condition due false wake-up requests to the Body Control Module (BCM) on some 2022-2024 Tahoe, Suburban, Yukon and Escalade models equipped with the hands-free […]

April 30, 2024
April Service Newsletter from the Experts at GM TAC

April Service Newsletter from the Experts at GM TAC

The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the April GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

April 30, 2024