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
2019 Colorado and Canyon Front Seat Design

2019 Colorado and Canyon Front Seat Design

The driver’s seat cushion on the 2019 Colorado and Canyon was redesigned to provide better entry and egress as well as improved comfort. Depending on the position of the steering […]

March 21, 2019
Setting the Timing on Gen 5 V6 and V8 Engines

Setting the Timing on Gen 5 V6 and V8 Engines

When installing a chain and gear set on the Gen 5 4.3L V6 (RPO LV1, LV3), 5.3L V8 (RPO L83) or 6.2L V8 engine (RPO L86, LT1, LT4) in some […]

March 21, 2019
DTC P0238 Set After Sensors Disconnected During Repairs

DTC P0238 Set After Sensors Disconnected During Repairs

Some 2019 XT4 models equipped with the 2.0L 4-cylinder engine (RPO LSY) may have DTC P0238 (Turbocharger Boost Sensor Circuit High Voltage) set after service repairs were performed that required […]

March 21, 2019
Clicking Sound from 9-speed Automatic Transmission After Engine Shutdown

Clicking Sound from 9-speed Automatic Transmission After Engine Shutdown

A rotational clicking sound may be heard after the engine is turned off on some 2017-2019 Cruze, Malibu; 2018-2019 Enclave, Envision, LaCrosse, Regal, Equinox, Traverse, Terrain; and 2019 XT4 and […]

March 21, 2019