New 2021 Engine Oil Capacities Chart
A new Engine Oil Capacities chart (Fig. 10) for the 2021 model year is now available under the Reference Chart menu. The chart includes engine, RPO, specifications (liters and quarts) […]
Original Engine Oil Filter Leak
Some new 2020-2021 XT5, XT6, Blazer, Camaro and Acadia models equipped with the 3.6L V6 engine (RPO LGX) may have an oil leak at the engine oil filter. (Fig. 12) […]
Low-Mileage 9T45/50/60 Transmission Diagnostic Tips
When diagnosing low-mileage 2020 Regal, Equinox; 2020-2022 Encore GX, Envision, XT4, XT5, XT6, Blazer, Malibu, Acadia, Terrain; and 2021-2022 Trailblazer models equipped with the 9T45 (RPO M3F, M3U), 9T50 (RPO […]
Bring Us Your Talent Campaign Aims to Build Technician Recruiting Efforts
GM recognizes the value and skill that certified technicians bring to the service department and the impact the nationwide shortage of technicians is having on the industry. Retaining and recruiting […]
Incorrect Fuses may Lead to Inoperative Auto Stop/Start
The Auto Stop/Start function (RPO KL9) may be inoperative on some 2019-2021 Silverado 1500 and Sierra 1500 models. In addition, the Check Engine MIL may be illuminated and DTCs P3055 […]
Inoperative Adaptive Cruise Control with DTC U0422
The Adaptive Cruise Control (RPO KSG) may be inoperative on some 2019-2021 XT5, XT6, Blazer and Acadia models along with an Adaptive Cruise Control Temporarily Unavailable message on the Driver […]
Digital Climate Controls Limited on Some 2021-2022 Models
Feature content on 2021-2022 GM models is continuing to be affected by the industry-wide shortage of semiconductors. Beginning on August 23, 2021, some 2021 Silverado 1500 and Sierra 1500 models […]
New and Improved: The 2022 Bolt EUV and Bolt EV
The 2022 Chevrolet Bolt EUV is an all-new electric vehicle that builds on the success of the Chevrolet Bolt EV, with a 6-inch (15.2 cm) longer overall length and a […]
2022 Bolt EUV and Bolt EV High-Voltage Battery Assembly
The 2022 Bolt EV and 2022 Bolt EUV are powered by a 65-kWh nickel lithium-ion high-voltage battery. The battery pack will be serviceable and some of the battery pack’s accessory […]
Report Concerns to the 2022 Bolt EUV and Bolt EV TAC Action Center
The GM Technical Assistance Center, or TAC, (U.S.) has established an Action Center for the all-new 2022 Chevrolet Bolt EUV and 2022 Bolt EV. (Fig. 14) Fig. 14 […]
Electronic Transmission Range Selector Assembly Parts Return
If diagnosis for a transmission condition leads to the replacement of the Electronic Transmission Range Selector (ETRS) assembly on 2020-2022 CT4, CT5, XT4, XT5, XT6; and 2021-2022 Escalade models, keep […]
Wireless Phone Charging Option No Longer Available on Some 2021 Models
The Wireless Phone Charging option is no longer available on most 2021 Tahoe, Suburban and Yukon models beginning in July 2021 due to the industry-wide shortage of semiconductors. The wireless […]
Proper Key Fob Inspection and Battery Replacement
Any time the Remote Keyless Entry (RKE) transmitter (key fob) on 2017-2022 GM vehicles is opened, such as when inspecting the fob for proper operation or replacing the battery, the […]
Heater Outlet Pipe Coolant Leak
A coolant leak or coolant smell at the front passenger-side of the vehicle may be noticed on some 2019-2021 Silverado 4500HD/5500HD/6500HD models equipped with the 6.6L Duramax diesel engine (RPO […]
3.6L Engine Intake Camshaft Position DTCs
Some 2021 Camaro models equipped with the 3.6L V6 engine (RPO LGX) may have an illuminated Check Engine MIL and DTCs P0011 (Intake Camshaft Position System Performance Bank 1) and/or […]
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 […]
Know Your Shipping Guidelines When Returning Parts to the Warranty Parts Center
In order to better understand and help resolve product issues quickly, the GM Warranty Parts Center (WPC) occasionally requests the return of specific parts replaced at dealerships through the Global […]
Engine Misfire Detected without Drivability Concerns
An engine misfire DTC may be set on some 2020-2021 Silverado 1500 and Sierra 1500 models equipped with the 5.3L V8 engine (RPO L84). However, the misfire may not be […]
Photos Increase the Value of Feedback in Engineering Information Lite Bulletins
Seeing how a condition affects vehicle operation is critical to proper diagnosis. That’s why GM requests photos to be included when possible with Field Product Reports (FPR) that are part […]
Buckle to Drive Added to More Upcoming Models
The Buckle to Drive feature that prevents drivers from shifting out of Park until the seat belt is buckled will be included as standard equipment on more upcoming GM models, […]
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Previous Articles
Transmission Whine Sound
March Service Newsletter from the Experts at GM TAC
Vehicle Alignment and Super Cruise
Rear Axle Differential Lock Control Actuator Condition
Diesel Exhaust Fluid Supply Pipe Contamination
FSE Technician Recognition Awards – 1st Quarter 2024
Crankshaft Bearing Diagnosis
Convertible Top Water Leak
Power Tonneau Cover Tips
GM Service Know-How Emerging Issues
MDI 2 Advanced Setup Technical Tips Update
Fuel Feed Pipe Buzzing Sound
February Service Newsletter from the Experts at GM TAC
Exhaust Resonator Rattle
Heated Steering Wheel Operation During a Remote Start
GM Dealer Equipment (GMDE)
TAC Newsletter March 2024
TAC Newsletter February 2024
Techline Connect Tips March 2023
