The Mark of Excellence program (U.S.) recognizes the achievements, professionalism, and commitment of many GM dealership personnel, including those in the service department. Service technicians enrolled in the 2023 program […]
The new TechLink 2023MY Engine Oil Capacities chart is now available under the Reference Charts menu. The chart includes engine, RPO, specifications (liters and quarts), oil viscosity and engine oil […]
The right and left front wheel speed sensors on 2019-2023 Silverado and Sierra trucks look very similar. When replacing a front wheel speed sensor (Fig. 3, #3), be sure to […]
Some 2020-2023 CT4, CT5, Corvette; 2021-2023 Envision, Escalade, Tahoe, Suburban, Yukon; and 2022 Silverado 1500 and Sierra 1500 models may have DTC P0606 (Control Module Processor Performance) set in the […]
A transmission fluid leak may be seen on some 2022 Silverado, Tahoe, Suburban, Sierra, Yukon and Escalade models equipped with the 10L80 10-speed automatic transmission (RPO MHS, MHT, MQB, MQC). […]
A squeak sound may be heard coming from the front of the vehicle on some 2019-2023 Camaro models equipped with the 2.0L I4 turbo engine (RPO LTG) or the 3.6L […]
The latest diagnostic assistance from the professionals at the GM Technical Assistance Center is now available in the October GM Technical Assistance Center (TAC) Newsletter. It covers a number of […]
What tools should your dealership have and where are they? Those are easy questions to answer for dealerships with the right special tools organization, which can help technicians quickly find […]
Some 2011-2016 Cruze; 2012-2020 Sonic; 2013-2022 Encore and Trax models equipped with the 1.4L engine (RPO LUV) may experience a loss of power or several other engine performance conditions along […]
The transmission fluid temperature of some 6L80 6-speed automatic transmissions (RPO MYC) and 6L90 6-speed automatic transmissions (RPO MYD) (Fig. 10) may be too hot under some operating conditions. Affected […]
An extended engine crank or reduced engine power condition may be the result of incorrect tires mounted on some 2016-2023 Camaro SS, Camaro SS 1LE (RPO A1Y); 2017-2023 Camaro ZL1; […]
The monthly GM Service Know-How Emerging Issues seminars provide service/technical information on current issues and GM-certified repairs. This month features the Diagnostic Charge Battery Station. (Fig. 16) Fig. 16 […]
Some 2016-2023 Camaro convertible models (Fig. 1) may have a power top (RPO CM8) that does not fully complete the folding cycle. A Top Not Secure message also may be […]
A rear tail lamp water leak on some 2018-2023 Equinox and Terrain models may result in a no start or extended crank condition, a drained battery, a fuel pump that […]
The rearview camera may be intermittently inoperable on some 2019-2022 Equinox and Terrain models. The digital HD rearview camera screen (RPO UVB, UV2) may display only a blue or black […]
There may be a poor connection issue with the electric engine coolant pump on some 2019-2022 Silverado 1500, Sierra 1500; 2021-2022 CT4 and CT4-V models equipped with the 2.7L turbocharged […]
The rear window glass on the liftgate of some 2021-2022 Tahoe, Suburban, Yukon and Escalade models (Fig. 12) may not open when using the switch on the liftgate or the […]
Several new design components may be needed to complete fuel system-related repairs on some 2019-2020 Cadillac CT6 models equipped with the 4.2L twin-turbo V8 engine (RPO LTA). (Fig. 15) The […]
Some 2021-2023 Tahoe, Suburban, Yukon and Escalade models may have a right rear door (Fig. 17) that requires alignment. If the rear door is not flush or sticks out excessively […]
Several DTCs set in the Engine Control Module (ECM) may be caused by an exhaust leak on some 2020-2022 Silverado 1500, Sierra 1500; 2021-2023 Tahoe, Suburban, Yukon and Escalade models […]
Corvette E-Ray Delivers Electrified AWD Performance
Corvette E-Ray 12-Volt Lithium-Ion Battery
Power Liftgate Battery Draw Conditions
April Service Newsletter from the Experts at GM TAC
New Design Intake Manifold Addresses Poor Engine Performance
Free Spinning or Grinding Starter Sounds
May Service Newsletter from the Experts at GM TAC
New Battery Cell Chemistry Identification
GM Service Know-How Emerging Issues
New Trailer Tire Pressure Sensors Offer Increased Capability
Inoperative USB Port Diagnosis
Avoid the TUN# Label When Cleaning Transmission Cases
High-Pitched Whistling Sound at IdleGM Dealer Equipment (GMDE)
TAC Newsletter June 2024
TAC Newsletter May 2024
Techline Connect Tips June 2024
The design of today’s modern vehicles — and the proper operation of many new components and systems — has led to the critical importance of properly balanced and low Road […]
With the MDI Manager application software, the MDI 2 can be configured to communicate with a PC using several possible networks, such as a USB cable, ethernet cable, Wireless Local […]
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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