Archive for March, 2019

New Chevrolet Silverado 4500HD, 5500HD, 6500HD Take on Medium-Duty Market

New Chevrolet Silverado 4500HD, 5500HD, 6500HD Take on Medium-Duty Market

The new 2019 Chevrolet Silverado 4500HD, 5500HD, 6500HD chassis cab models (Fig. 1) are the newest entries in the medium-duty truck market. The trucks are available as regular and crew […]

March 29, 2019
Silverado 4500HD, 5500HD, 6500HD Powertrain Operation

Silverado 4500HD, 5500HD, 6500HD Powertrain Operation

The new 2019 Chevrolet Silverado 4500HD, 5500HD, 6500HD chassis cab models are equipped with a standard 6.6L Duramax diesel V8 engine (RPO L5D) and Allison 6-speed automatic transmission. (Fig. 8) […]

March 29, 2019
Requesting GM Upfitter Technical Assistance

Requesting GM Upfitter Technical Assistance

The GM Upfitter Integration website — gmupfitter.com — offers a variety of valuable information and assistance for technicians and other personnel, including the latest bulletins involving upfitter equipment and technical […]

March 29, 2019
Shipping Hazardous Materials to the Warranty Parts Center

Shipping Hazardous Materials to the Warranty Parts Center

When shipping any automotive hazardous materials, such as air bags, seat belt pretensioners, brake boosters, compressed gas shocks, batteries, paint, solvents, and other parts, to the Warranty Parts Center (WPC), […]

March 29, 2019
Engine Performance and Fuel Range Conditions

Engine Performance and Fuel Range Conditions

A lack of engine performance along with an incorrect low fuel range display may be found on some 2017-2018 Acadia, Enclave, Traverse and XT5 models equipped with the 3.6L V6 […]

March 29, 2019
Engine Tick or Squeak Noise

Engine Tick or Squeak Noise

Some 2011-2015 Volt; 2011-2016 Cruze; 2012-2019 Sonic; 2013-2019 Encore, Trax; and 2014-2017 ELR models equipped with the 1.4L 4-cylinder engine (RPOs LUV, LUU) (Fig. 17) may have a tick or […]

March 29, 2019
Wheelhouse Liner Interference

Wheelhouse Liner Interference

A rubbing or popping sound coming from the front of the vehicle while making a sharp turn at low speeds may be heard on some 2019 Blazer models. One or […]

March 29, 2019
Frequent Navigation Service Has Expired Message

Frequent Navigation Service Has Expired Message

The infotainment system may display a “Navigation service has expired.” message on some 2018-2019 Regal, ATS, CTS, XTS, Terrain; 2019 CT6, XT4, Blazer, Camaro, Colorado, Equinox, Malibu, Silverado, Volt, Canyon […]

March 29, 2019
2019 Camaro ZL1 1LE with 10-Speed Automatic Transmission

2019 Camaro ZL1 1LE with 10-Speed Automatic Transmission

The 2019 Camaro ZL1 1LE (Fig. 1) now offers an available 10-speed 10L90 automatic transmission (RPO MGL). Unique calibrations were developed for the transmission as well as the Electronic Limited […]

March 21, 2019
Electronic Limited Slip Differential DIC Screens

Electronic Limited Slip Differential DIC Screens

The 2017-2019 Camaro ZL1 (Fig. 6) and Camaro SS 1LE; 2018-2019 Camaro ZL1 1LE; and 2015-2019 Corvette models equipped with the 6.2L V8 engine (RPOs LT1, LT4, LT5) feature an […]

March 21, 2019