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Tool Job Aids AFIT Vehicle Application Chart J-38125 Terminal Repair Kit Update Procedure Tips for Warranty Reprogramming Events Reference Charts 2024 Battery Ratings Chart 2023 Engine Oil Capacities Chart 2023 Battery Ratings Chart 2022 Engine Oil Capacities Chart 2021 Engine Oil Capacities Chart 2019-2022 Battery Ratings Chart 2019-2020 Engine Oil Capacities Chart 2016-2018 Battery Ratings Chart 2016-2018 Engine Oil Capacities Chart Languages French Spanish Service Ops News (U.S.) Contact Us Take the TAC Action Center Survey Today — Survey Closes Friday Corvette E-Ray Delivers Electrified AWD Performance Corvette E-Ray 12-Volt Lithium-Ion Battery Power Liftgate Battery Draw Conditions April Service Newsletter from the Experts at GM TAC New GM Tools and Equipment Program Announced Use Correct Labor Code for Tire Valve Stem Repairs Midtronics Diagnostic Charger DCA-8000P Now Approved Battery Warranty Tool Exhaust Valve Electrical Connector Reconfiguration GM Service Know-How Emerging Issues 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 Take the TAC Action Center Survey Today — Survey Closes Friday The GM Technical Assistance Center (TAC) is inviting all technicians who have recently contacted a TAC Action Center to take a brief satisfaction survey. The results of the survey will […] May 6, 2024 — Corvette E-Ray Delivers Electrified AWD Performance The new 2024 Corvette E-Ray pairs two separate propulsion systems to provide naturally aspirated V8 power with electrified responsiveness powered by eAWD (All-Wheel Drive), delivering all-weather capabilities with impressive performance. […] April 30, 2024 — Corvette E-Ray 12-Volt Lithium-Ion Battery The 2024 Corvette E-Ray uses two lithium-ion batteries — one for high-voltage functions with the front electric axle and one for low-voltage operations that replaces the traditional lead-acid 12V battery. […] April 30, 2024 — Power Liftgate Battery Draw Conditions There may be a battery draw condition due false wake-up requests to the Body Control Module (BCM) on some 2022-2024 Tahoe, Suburban, Yukon and Escalade models equipped with the hands-free […] April 30, 2024 — 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, 2024 — New GM Tools and Equipment Program Announced A new GM Tools and Equipment program has recently been announced by GM that aims to quickly deliver the essential tools dealerships need while providing a world-class customer service experience. […] April 19, 2024 — Use Correct Labor Code for Tire Valve Stem Repairs A damaged valve stem is a common cause of a tire leak. The valve stem may have been damaged by normal wear and tear from road conditions or impacts or […] April 19, 2024 — Midtronics Diagnostic Charger DCA-8000P Now Approved Battery Warranty Tool The Midtronics Diagnostic Charger DCA-8000P is now an approved battery warranty tool in the GM Dealer Equipment and Tool program. The DCA-8000P (Fig. 4) is a state-of-the-art battery charger and […] April 19, 2024 — Exhaust Valve Electrical Connector Reconfiguration For the 2023 model year, there are two possible exhaust muffler designs available on Escalade models. (Fig. 6) The muffler design was changed later in the model year with a […] April 19, 2024 — 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 looks at updating the Diagnostic and Charge Battery Station […] April 19, 2024 — Transmission Whine Sound There may be a whine sound heard under light acceleration or when coasting on some 2023-2024 Colorado and Canyon models equipped with the 8L45 or 8L80 8-speed automatic transmission (RPO […] March 29, 2024 — March 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 March GM Technical Assistance Center (TAC) Newsletter. It covers a number of […] March 29, 2024 — Vehicle Alignment and Super Cruise After a wheel alignment, the Super Cruise system (RPO UKL) – Lane Active Safety-Keep Assist, Hands-Free Lane Following (Entire Speed Range) (Fig. 9) – may not center the vehicle properly […] March 29, 2024 — Rear Axle Differential Lock Control Actuator Condition A Service All Wheel Drive message may be displayed on the Driver Information Center in some 2020-2023 Encore GX and 2021-2023 Trailblazer models equipped with the 1.3L engine (RPO L3T) […] March 29, 2024 — Diesel Exhaust Fluid Supply Pipe Contamination Some 2020-2024 Silverado 1500, Silverado 2500HD/3500HD, Sierra 1500, Sierra 2500HD/3500HD; 2021-2024 Tahoe, Suburban, Yukon and Escalade models equipped with the 3.0L diesel engine (RPO LZ0, LM2) or 6.6L diesel engine […] March 29, 2024 — FSE Technician Recognition Awards – 1st Quarter 2024 The GM Field Service Engineer (FSE) Technician Recognition Awards (U.S.) celebrate the skill and dedication of dealership technicians who have recently worked with FSEs on challenging repairs. Technicians at GM […] March 21, 2024 — Crankshaft Bearing Diagnosis A growling, knocking or rhythmic thumping sound may be heard on some 4.3L engines (RPO LV3), 5.3L engines (RPO L82, L84) and 6.2L engines (RPO L87, LT1, LT2, LT4, L8T) […] March 21, 2024 — Convertible Top Water Leak Some 2020-2024 Corvette convertible models may have a water leak around the side glass. The leak, which is found at approximately the middle rear of the side glass area (Fig. […] March 21, 2024 — Power Tonneau Cover Tips The GM Accessory Power Tonneau Cover (part number 86575628 or 86595165) is available on 2022-2024 HUMMER EV Pickups. (Fig. 15) If the hard power-retractable tonneau cover is not operating properly, […] March 21, 2024 — 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 takes a look at the E-Phaser” cam phaser system […] March 21, 2024 — 1 2 3 … 55 → Search Generic selectors Exact matches only Search in title Search in content Post Type Selectors Print Edition Click to Download PDF Archives Previous Articles 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 Service Know-How Emerging Issues 2024 Essential Tool Forecast Headlamps Flashing Due to Low Battery Charge PicoScope Recording for CVTs with Noise Concerns Dual Clutch Transmission MCVM PUN Characterization Shift to Park Message 2024 Technician Excellence Program Rewards Dealership Technicians for Training Achievements Hands-Free Start Power Modes Poor Ground Path Condition Inoperative Trunk Latch Lunch with Your FSEs Monthly Meeting April 17, 2024 Join the monthly 1-hour call (U.S. only) with your Field Service Engineers to discuss current technical topics. 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