Recent GM studies have shown that automatic transmission oil cooler flush requirements have limited benefit on many current transmission repairs. Based on the studies, GM will no longer require a […]
The Active Noise Cancelation (ANC) module filtering function may not be operating properly or the ANC microphone may not be seated correctly in the headliner on some 2016-2018 Malibu models. […]
Some 2018 Equinox and Terrain models equipped with the 1.5L 4-cylinder engine (RPO LYX) or 2.0L 4-cylinder engine (RPO LTG) may have an illuminated Check Engine lamp and DTCs P0299 […]
Some 2017-2019 Bolt EV models may not have charged to a full charge level, as shown on the power indicator gauge on the instrument cluster, after a complete vehicle charge […]
The Restorator from Vaportek is a new odor eliminator system now available through GM Dealer Equipment. Based on GM testing, the easy-to-use, portable system effectively eliminates odor contamination quickly and […]
The CH-51450 PicoScope is a GM-specific 4-channel, PC-based automotive oscilloscope that can be used in the service bay or on the road to diagnose electrical circuits as well as signals […]
After replacing a hybrid/EV battery section on the 2011-2019 Volt; 2014-2016 ELR, Spark EV; 2017-2018 CT6 PLUG-IN; and 2017-2019 Bolt EV models, the new battery section has to be balanced […]
In the simplest terms, electricity consists of the movement of electrons, which flow through batteries, wires, switches, and other conductors. A common comparison is that electrons in a wire flow […]
While programming an Engine Control Module (ECM) on some 4-cylinder engines, the Service Programming System (SPS) may prompt for an engine identification number. (Fig. 15) The engine ID number is […]
When performing diagnosis on a vehicle for several Engine Control Module (ECM)-related DTCs, it’s critical to check for conditions that may cause low battery voltage or a momentary loss of […]
Some 2016-2019 Malibu models equipped with the 1.5L 4-cylinder engine (RPO LFV) may have severe low power under acceleration. The low power condition may be due to the ignition timing […]
The Rear Vision Camera display on the infotainment screen may show an image of a video camera icon with a slash through it when some 2018-2019 Silverado 2500/3500 and Sierra […]
10218.11V – Emerging Issues (U.S.) November 8, 2018 The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM certified repairs. The latest service topics […]
Transmission Whine Sound
March Service Newsletter from the Experts at GM TAC
Vehicle Alignment and Super Cruise
Rear Axle Differential Lock Control Actuator Condition
Diesel Exhaust Fluid Supply Pipe Contamination
FSE Technician Recognition Awards – 1st Quarter 2024
Crankshaft Bearing Diagnosis
Convertible Top Water Leak
Power Tonneau Cover Tips
GM Service Know-How Emerging Issues
MDI 2 Advanced Setup Technical Tips Update
Fuel Feed Pipe Buzzing Sound
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Exhaust Resonator Rattle
Heated Steering Wheel Operation During a Remote StartGM Dealer Equipment (GMDE)
TAC Newsletter March 2024
TAC Newsletter February 2024
Techline Connect Tips March 2023
The EL-52800 Diagnostic Charge Battery Station (DCBS) is the recommended and approved tool for diagnosing battery replacements and submitting battery warranty claims. And effective January 1, 2024, the DCBS (Fig. […]
A new feature will make logging into Techline Connect easier and quicker for users. Previously, Techline Connect had its own unique login, using the Techline Connect desktop icon, and users […]
Take a detailed look at a wide range of innovative features and advanced systems found on GM vehicles to gain a better understanding of proper operation. Each short video reviews how a feature works, highlights operating tips and shows ways to customize settings, if applicable.
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