TechLink – Page 5

Front View Camera Diagnosis and Part Restriction

There may be several DTCs set and ADAS-related messages displayed on the Driver Information Center related to the B174W Front View Camera Module (ACP2) (Fig. 14) on some 2024-2026 Chevrolet, […]

April 24, 2026 —

Midtronics DCA-8000 Diagnostic Charger is the Only Accepted Battery Tester for Warranty Battery Replacement

The Midtronics DCA-8000 Diagnostic Charger is the latest generation battery charger and tester from Midtronics. It provides fast, accurate testing results and is the GM-required tool for charging and testing […]

April 13, 2026 —

High Resistance in Glass Breakage Loop May Lead to Dead Battery

There may be a low or dead battery, no crank due to a dead battery, or an unwanted theft-deterrent alarm on some 2021-2026 Tahoe, Suburban, Yukon and Escalade models. (Fig. […]

April 13, 2026 —

Power Steering Leak Diagnosis Using Fluorescent Dye

A fluid leak may be visible on the steering gear (Fig. 6) or power steering fluid lines on some 2015-2026 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD trucks. The leak may be […]

April 13, 2026 —

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 talks about high viscosity POE oil and fluorescent leak […]

April 13, 2026 —

Proactive Alerts — Parasitic Drain Detection

Proactive Alerts, a feature of OnStar Advanced Diagnostics, are designed to help predict specific types of potential performance degradation based on current vehicle data. New Proactive Alerts have been added […]

March 31, 2026 —

Proper Use and Diagnostic Tips for NFC Key Cards

Key cards are wallet-sized cards that can be used to unlock, lock and start a number of GM vehicles when the key fob is not available. Key cards (part of […]

March 31, 2026 —

Camshaft Position Sensor Performance Diagnosis

When diagnosing engine performance issues, DTCs P0340 (Intake/Single Camshaft Position Sensor Circuit), P0341 (Intake/Single Camshaft Position Sensor Performance), P0011 (Intake/Single Camshaft Position System Performance) or P0016 (Crankshaft Position Sensor and […]

March 31, 2026 —

Tick Sound at Idle on V8 Engines

The 5.3L, 6.2L and 6.6L V8 engines (RPO L84, L87, L8T) available in 2019-2026 Silverado 1500, Silverado 2500HD/3500HD, Tahoe, Suburban, Sierra 1500, Sierra 2500HD/3500HD, Yukon and Escalade models may have […]

March 31, 2026 —

March 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 March GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]

March 31, 2026 —

CCND Labor Codes Updated for Infotainment Audio and Screen Conditions

An update to Bulletin #22-NA-038 has been released that covers changes for several Customer Concern Not Duplicated (CCND) labor operations that address screen conditions and audio system issues on 2022-2027 […]

March 24, 2026 —

FSE Technician Recognition Awards – 1st Quarter 2026

The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSEs on challenging repairs. Technicians at GM […]

March 24, 2026 —

Radiator Inlet Hose Coolant Leak

Some 2023-2026 Colorado and Canyon models may have a visible coolant leak from the upper radiator inlet hose connection or a low coolant level at the overflow reservoir. DTC P3075 […]

March 24, 2026 —

Sending GDS 2 Session Logs to TAC Using CX Connect

There are times when working on a case with the GM Technical Assistance Center (TAC) where a GDS 2 session log will be needed to help with diagnosis of an […]

March 24, 2026 —