Information on Mimamori ECU Download (Health Report) – 2016-2023 Chevrolet Medium Duty (LCF)

2021 Chevrolet 6500XD

NHTSA ID Number: 10219280 Manufacturer Communication Number: 17-NA-050 Summary This service bulletin explains how a health report is required when doing repairs on MD LCF vehicles.   Information Important: Perform the Mimamori ECU download before clearing the DTC and before diagnosing the vehicle. In an effort for continuous improvement, there is a need to obtain Mimamori ECU … Read more

N222391080 Defective Suspension Nuts – 2021-2022 Chevrolet 4500HD/5500HD/6500HD

2022 Chevrolet Silverado MD 6500

November 23, 2022 NHTSA CAMPAIGN NUMBER: 22V874000 Hex Flange Lock Nut May Break Broken hex flange lock nuts may cause a loss of tension, leading to steering instability, and increasing the risk of a crash.   NHTSA Campaign Number: 22V874 Manufacturer General Motors, LLC Components EQUIPMENT Potential Number of Units Affected 5,861   Summary General Motors, LLC (GM) is recalling … Read more

Engine Backfire and Related Driveability Issues – 1999-2002 Chevrolet & GMC B7 School Bus Chassis, C6/C7 Conventional Cab Medium Duty

QUANTUM Technologies GM

NHTSA ID Number: 10195303 Manufacturer Communication Number: TSB-013 Summary Engine Backfire and Related Driveability Issues   This bulletin is being issued to assist technicians in efficiently diagnosing and correcting backfire and other related driveability concerns. When a vehicle is identified with a backfire it is recommended that the checks listed below be followed in the indicated order. … Read more

Information on Engine Low Oil Pressure Indicator on the Driver Information Center (DIC) – DTC P0521 Set – 2019-2020 Chevrolet GMC

2019 Chevrolet Suburban

NHTSA ID Number: 10198859 Manufacturer Communication Number: 20NA161   Summary This informational bulletin advises the technician to check for a possible stuck oil pressure relief valve.     8 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET 3500 2019 CHEVROLET EXPRESS 2019-2020 CHEVROLET SILVERADO 2500 2019 CHEVROLET SUBURBAN 2019 GMC SAVANA 2019-2020 GMC SIERRA 2500 2019   Condition … Read more

Warranty Administration – Transmitter Key Fob Warranty Replacement Requirements – GM Passenger Cars and Trucks (including Medium Duty)

General Motors

NHTSA ID Number: 10222661 Manufacturer Communication Number: 21-NA-068 Summary This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with RPO ATH and AVJ.   379 Affected Products Vehicles MAKE MODEL YEAR BUICK CASCADA 2017-2019 … Read more