Archive for September, 2022

Power Folding Top Does Not Cycle Completely

Power Folding Top Does Not Cycle Completely

Some 2016-2023 Camaro convertible models (Fig. 1) may have a power top (RPO CM8) that does not fully complete the folding cycle. A Top Not Secure message also may be […]

September 30, 2022
Tail Lamp Water Leak

Tail Lamp Water Leak

A rear tail lamp water leak on some 2018-2023 Equinox and Terrain models may result in a no start or extended crank condition, a drained battery, a fuel pump that […]

September 30, 2022
Intermittent Blue or Black Rearview Camera Screen

Intermittent Blue or Black Rearview Camera Screen

The rearview camera may be intermittently inoperable on some 2019-2022 Equinox and Terrain models. The digital HD rearview camera screen (RPO UVB, UV2) may display only a blue or black […]

September 30, 2022
Lost Communication with Engine Coolant Pump

Lost Communication with Engine Coolant Pump

There may be a poor connection issue with the electric engine coolant pump on some 2019-2022 Silverado 1500, Sierra 1500; 2021-2022 CT4 and CT4-V models equipped with the 2.7L turbocharged […]

September 30, 2022
Rear Window Glass Will Not Open

Rear Window Glass Will Not Open

The rear window glass on the liftgate of some 2021-2022 Tahoe, Suburban, Yukon and Escalade models (Fig. 12) may not open when using the switch on the liftgate or the […]

September 30, 2022
4.2L V8 Fuel System Components Retrofit Procedure

4.2L V8 Fuel System Components Retrofit Procedure

Several new design components may be needed to complete fuel system-related repairs on some 2019-2020 Cadillac CT6 models equipped with the 4.2L twin-turbo V8 engine (RPO LTA). (Fig. 15) The […]

September 30, 2022
Full-Size SUV Rear Door Alignment

Full-Size SUV Rear Door Alignment

Some 2021-2023 Tahoe, Suburban, Yukon and Escalade models may have a right rear door (Fig. 17) that requires alignment. If the rear door is not flush or sticks out excessively […]

September 30, 2022
Checking for Exhaust System Leaks

Checking for Exhaust System Leaks

Several DTCs set in the Engine Control Module (ECM) may be caused by an exhaust leak on some 2020-2022 Silverado 1500, Sierra 1500; 2021-2023 Tahoe, Suburban, Yukon and Escalade models […]

September 27, 2022
Incorrect Headlamp and DRL Operation Condition

Incorrect Headlamp and DRL Operation Condition

The headlamps may be turning on automatically during daylight conditions instead of the Daytime Running Lamps (DRL) on some 2022 Tahoe, Suburban, Yukon, Escalade and 2022-2023 Corvette models. (Fig. 6) […]

September 27, 2022
Wheel Speed Sensor Inspection

Wheel Speed Sensor Inspection

Some 2019-2022 Silverado 4500HD/5500HD/6500HD models may an illuminated ABS, traction control and/or brake warning MIL along with several DTCs set. These conditions may be due to an out-of-adjustment wheel speed […]

September 27, 2022
September Service Newsletter from the Experts at GM TAC

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

September 27, 2022
Fine Tune Service Information Searches with RPO Data

Fine Tune Service Information Searches with RPO Data

Technicians navigating in Service Information (SI) using the year, make and model (YMM) of a vehicle are used to seeing all service manual content for that vehicle displayed — that […]

September 20, 2022
Duramax Diesel Engine Oil Filter Update for 2023

Duramax Diesel Engine Oil Filter Update for 2023

The PF63 engine oil filter (Fig. 5) is the new recommended filter specification for 2020-2023 Silverado 2500HD/3500HD, Sierra 2500HD/3500HD, Express, Savana; and 2019-2023 Silverado 4500/5500/6500 models equipped with the 6.6L […]

September 20, 2022
Knock Sensor Performance Condition

Knock Sensor Performance Condition

Some 2022 Camaro, Colorado, Acadia, Canyon, XT5 and XT6 models equipped with the 3.6L V6 engine (RPO LGX, LGZ) may have an illuminated Check Engine MIL along with DTC P0331 […]

September 20, 2022
Power Folding Mirror Speeds

Power Folding Mirror Speeds

The power folding mirrors on the driver’s side and passenger’s side of the vehicle (Fig. 10) may appear to operate at different speeds on some 2019-2023 Silverado 1500, Sierra 1500; […]

September 20, 2022