Archive for April, 2021

Latest Labor Time Guide Provides New Add Times for Transmission Repairs, Reduces Need for OLH

Latest Labor Time Guide Provides New Add Times for Transmission Repairs, Reduces Need for OLH

When performing internal transmission repairs on GM transmissions (Fig. 1) under warranty, current labor times focus on replacing the damaged part(s), with Other Labor Hours (OLH) as the only option […]

April 29, 2021
Latest GM Global Electronic Parts Catalog Update Enhances Part Filters for Better Search Results

Latest GM Global Electronic Parts Catalog Update Enhances Part Filters for Better Search Results

The latest update to the GM Global Electronic Parts Catalog (EPC) has recently been released. It features several enhancements to help make parts searches easier and more efficient, including additional […]

April 29, 2021
Tips for USB Programming

Tips for USB Programming

Programming calibrations and software requires the transfer of large files to the vehicle from the Service Programming System (SPS). When transferring a large file (greater than 1 GB) from the […]

April 29, 2021
Remote Keyless Entry Transmitter Warranty Replacements

Remote Keyless Entry Transmitter Warranty Replacements

A new warranty requirement (U.S. only) is being implemented when replacing the Remote Keyless Entry (RKE) transmitter (key fob) (Fig. 12) under warranty on 2017-2022 GM vehicles equipped with Remote […]

April 29, 2021
Common Concerns from the Escalade TAC Action Center

Common Concerns from the Escalade TAC Action Center

The all-new 2021 Cadillac Escalade (Fig. 17) is available with a variety of new features and customized options. Several of these newly designed systems may be unfamiliar to technicians. Here […]

April 29, 2021
Poor Engine Performance in High Ambient Temperatures

Poor Engine Performance in High Ambient Temperatures

Some 2016-2020 Express and Savana vans equipped with the 6.0L V8 engine (RPO L96, LC8) may have a lack of power when driving up grades or after the vehicle has […]

April 29, 2021
Engine Shudder Concerns

Engine Shudder Concerns

There may be several shudder concerns while driving on some 2020-2021 Silverado, Tahoe, Suburban, Sierra, Yukon and Escalade models that may be mistaken as a transmission-related concern. If the concern […]

April 29, 2021
Engine Rattle Sound from Purge Solenoid

Engine Rattle Sound from Purge Solenoid

A loud ticking or rattle sound may be heard coming from the engine compartment on some 2020-2021 Enclave and Traverse models equipped with the 3.6L V6 engine (RPO LFY). The […]

April 29, 2021
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. The latest service topics from GM Brand Quality and Engineering covered in […]

April 29, 2021
Replace, Don’t Repair, Coaxial Cables

Replace, Don’t Repair, Coaxial Cables

Many GM vehicles are equipped with Low Voltage Differential Signaling (LVDS), Universal Serial Bus (USB) and Coaxial (Coax) cables for a number of screen and camera connections as well as […]

April 13, 2021
Programming Radio Calibrations

Programming Radio Calibrations

When diagnosing an infotainment system, it’s important to remember that software and calibrations are not the same thing and are not interchangeable terms. Calibrations instruct the radio what to do […]

April 13, 2021
Vehicle Repairs and Product Assistance Claims

Vehicle Repairs and Product Assistance Claims

When a GM vehicle is involved in an incident that involves vehicle damage or possible property damage, dealerships (U.S.) may need to work with their respective Customer Assistance Center to […]

April 13, 2021
Mass Air Flow Sensor Performance

Mass Air Flow Sensor Performance

Some 2019-2021 Silverado and Sierra models equipped with the 5.3L V8 engine (RPOs L82, L84) or 6.2L V8 engine (RPO L87) may have an illuminated Check Engine MIL and DTC […]

April 13, 2021
Diesel Engine Rear Main Oil Seal

Diesel Engine Rear Main Oil Seal

Some 2020-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 3.0L diesel engine (RPO LM2) may have an oil leak concern and DTC P06DD (Engine Oil […]

April 13, 2021
Loss of Window Motor Memory

Loss of Window Motor Memory

The front windows may drop enough to cause wind noise on some 2018-2021 Equinox and Terrain models. After driving the vehicle while the infotainment system is at a high volume […]

April 13, 2021
Vibration or Rough Idle in Drive or Park

Vibration or Rough Idle in Drive or Park

A rough idle or vibration at idle may be present with the transmission in Drive or Park on some 2019-2021 Silverado and Sierra models equipped with the 5.3L V8 engine […]

April 13, 2021
Internal Transmission Faults Not Serviceable at the Dealership

Internal Transmission Faults Not Serviceable at the Dealership

A Service Transmission message or a Service Engine Soon message may be displayed on the Driver Information Center of some 2020-2021 Corvettes equipped with the DCT TR9080 transmission (RPO M1L) […]

April 13, 2021