TechLink – Page 31

Neutral Idle Control Feature on 6-Speed Automatic Transmission

A single bump feeling may be felt when coming to a stop on some 2017-2022 Encore and Trax models equipped with the 6T40 6-speed automatic transmission (RPO MNH, MNK) and […]

May 31, 2023 —

New Design Intake Manifold Addresses Poor Engine Performance

Some 2011-2016 Cruze; 2012-2020 Sonic; and 2013-2020 Encore and Trax models equipped with the 1.4L engine (RPO LUV) may experience a loss of power or several other engine performance conditions […]

May 26, 2023 —

Free Spinning or Grinding Starter Sounds

A starter grinding sound or free spinning sound under the hood may be heard on some 2019-2020 Enclave and Traverse models equipped with the 3.6L V6 engine (RPO LFY). In […]

May 26, 2023 —

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

May 26, 2023 —

New Battery Cell Chemistry Identification

Before replacing a high voltage battery pack or battery section on 2017-2023 Bolt EV and 2022-2023 Bolt EUV models (Fig. 10), the battery pack must be correctly identified. Fig. […]

May 26, 2023 —

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 covers electric vehicle battery pack uncrating and crating with […]

May 26, 2023 —

New Trailer Tire Pressure Sensors Offer Increased Capability

The trailering app (RPO ZL6) available on 2020-2022 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500 and Sierra 2500HD/3500HD trucks includes Trailer Tire Pressure and Temperature Monitoring. (Fig. 1) As part of […]

May 23, 2023 —

Inoperative USB Port Diagnosis

Many 2020-2023 GM models feature USB ports for mobile device charging and data connection. If a smartphone or other device does not charge or transfer data properly when connected to […]

May 23, 2023 —

Avoid the TUN# Label When Cleaning Transmission Cases

Recently, a number of 8-speed and 10-speed transmissions have been returned to the Warranty Parts Center with missing or unreadable Transmission Unique Label (TUN) labels. In some cases, the label […]

May 23, 2023 —

High-Pitched Whistling Sound at Idle

A high-pitched whistling or squeal sound may be heard at idle on some 2022-2023 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD models equipped with the 6.6L V8 gasoline engine (RPO L8T). The […]

May 23, 2023 —

Using the COAX FAKRA Cable Adapter Kit

The EL-52552 COAX FAKRA Cable Adapter Kit can help in diagnosing a variety of coax cables, including Wi-Fi, cameras, headliner cables, A-pillar cables and more. Diagnosing coax cables routed through […]

April 30, 2023 —

Individual Parts of Valve Lifter Oil Manifold Kit Now Available

When addressing an engine misfire condition on some 2014 Silverado 1500, Sierra 1500; 2014-2019 Corvette; 2015-2018 Silverado, Sierra; 2015-2020 Tahoe, Suburban, Yukon, Escalade; 2016-2019 CTS-V; 2016-2023 Camaro; and 2019 Silverado […]

April 30, 2023 —

New Engine Calibration Addresses Fuel Injection Variation

Some 2022-2023 Trailblazer and Encore GX models equipped with the 1.3L engine (RPO L3T) may have an illuminated Check Engine MIL and DTC P2B95 (Injection Pulse Performance During Cold Start) […]

April 30, 2023 —

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

April 30, 2023 —