Many GM performance models are equipped with three-season performance tires, commonly referred to as “summer tires.” (Fig. 1) These high-performance tires have a special tread and compound that are optimized […]
There may be a brake fluid leak at the center of some 2018-2019 Express and Savana vans. There also may be a tapping or knocking sound heard during turns. These […]
A shudder or surge may be felt when driving at a steady speed on some 2014-2022 Corvette, Silverado, Sierra; 2015-2022 Tahoe, Suburban, Yukon, Escalade; 2016-2022 Camaro; 2020-2022 Silverado HD, Sierra […]
Some 2021-2022 Silverado, Sierra, Tahoe, Suburban, Yukon and Escalade models equipped with the 2.7L engine (RPO L3B) or 3.0L diesel engine (RPO LM2) and the 10L80 automatic transmission (RPO MQB, […]
DTC P06DD (Engine Oil Pressure Control Solenoid Valve Performance) may set during the first engine start up immediately following an engine oil and filter change on some 2019-2022 Silverado and […]
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 […]
As the first GM truck designed around an electric vehicle (EV) propulsion system, the all-new 2022 GMC HUMMER EV Edition 1 Pickup (Fig. 1) offers some unique performance capabilities, including […]
The all-new 2022 GMC HUMMER EV Edition 1 Pickup is powered by an Ultium 24-module battery system that boasts a GM-estimated 1,000 horsepower and a combined axle torque of 11,500 […]
Replacement Part Traceability (RPT) is a new dealer process to document and track critical part serial numbers via the Certified Service Mobile Toolbox (CSMT) application. A field action, service bulletin, […]
Some 2021 Silverado 1500, Sierra 1500; 2022 Silverado 1500 LTD and Sierra 1500 Limited models equipped with the accessory tonneau cover (RPO VPB) may have the trim exposed at the […]
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 […]
If a gasoline engine is being replaced on a 2000-2022 GM passenger car or truck due to a connecting rod or crankshaft main bearing failure (Fig. 27), there are several […]
GM has announced that new labor codes have been developed for installing PDI Dealer-Installed Factory Invoiced Options (LPO) that require calibration programming. (Fig. 1) Technicians should refer to the appropriate […]
When testing or charging a 12V battery in a vehicle that is in for service or is part of the dealership’s inventory, the EL-50313 Midtronics GR8 Battery Tester/Charger or EL-52800 […]
The March Techline Connect (TLC) software release includes several updates to aid navigation in the app as well as enhance screen formatting. The update should be downloaded automatically when logging […]
A Reduced Engine Power message may be displayed on the Driver Information Center of some 2020-2022 Encore GX and 2021-2022 Trailblazer models. The Check Engine MIL may be illuminated and […]
2020-2022 Corvette models feature a wireless phone charger pocket between the driver’s and passenger’s seatbacks. (Fig. 15) The charger is capable of charging the batteries of compatible mobile phones. […]
Lunch with Your FSEs Meetings Now Offer Three Convenient Call Times
Loud Sound Inside the Cabin at Low RPMs
January Service Newsletter from the Experts at GM TAC
GM Service Know-How Emerging Issues
Avoiding HVAC Blower Motor Parts Return Damage
Newly Arrived EVs May Not Charge
High Resistance in Ground Straps
Inoperative 110/120-Volt Power Outlet
Forward Collision Alert Indicator On at All Times
GM Service Know-How Emerging Issues
December Service Newsletter from the Experts at GM TAC
DCBS Warranty Requirement Deadline Extended
Window Indexing After Loss of Vehicle Power
Transmission Park Lock Position Sensor MeasurementGM 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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