Rear Air Suspension Inoperative – 2019-2020 Chevrolet Silverado 4500HD, 5500HD & 6500HD

2019 Chevrolet Silverado 4500-6500

NHTSA ID Number: 10187391 Manufacturer Communication Number: 20NA030   Summary This service bulletin provides a procedure to correct a customer concern of Rear Air Suspension Inoperative.   1 Affected Product Vehicle MAKE MODEL YEAR CHEVROLET SILVERADO 4500HD 2019     Parts Information Causal Part Description Part Number Qty X SPRING, RR AIR 19407642 2 N/A ABSORBER, RR …

Read more

2017-2020 Chevrolet LCF 4500HD, 4500XD, 5500HD, & 5500XD Safety Recall N212333830 Rear Axle U-Bolt Nuts

Chevrolet 4500HD

March 19, 2021 NHTSA CAMPAIGN NUMBER: 21V194000 Rear Axle U-Bolt Not Properly Tightened The misalignment may cause the propeller shaft to separate, causing a loss of power to the rear wheels and a stall, increasing the risk of a crash.   NHTSA Campaign Number: 21V194 Manufacturer Isuzu Technical Center of America, Inc. Components SUSPENSION Potential Number of Units Affected 258 …

Read more

Loss of Air Pressure Causing Rear Air Suspension Bags Not to Inflate – 2019-2020 Chevrolet Silverado 4500HD, 5500HD & 6500HD

2019 Chevrolet Silverado 4500-6500

NHTSA ID Number: 10183194 Manufacturer Communication Number: 20NA177 Summary This technical bulletin provides repair information to correct a customer concern of the loss of air pressure causing rear air suspension bags not to inflate.   Parts Information Causal Part Description Part Number Qty X VALVE ASM,RR AIR SUSP LVLG 19407966 1     SEOCONTENT-START   Copyright 2020 …

Read more

Identifying Non-GM ECM Calibration Use and Power-up Hardware Detection in Duramax Diesel Engines Using GDS 2 – 2019-2023 Cadillac Chevrolet GMC

General Motors

NHTSA ID Number: 10222660 Manufacturer Communication Number: 20-NA-090 Summary This informational bulletin provides a way for the technician to identify if the ECM has been modified.   General Motors Position on Aftermarket Power-Up Devices General Motors does not support or endorse the use of devices or modifications that when installed, increase the engine horsepower and torque. This …

Read more

Information on Diesel Exhaust Fluid Pump is Unable to Build Pressure After Replacement – 2017-2022 Cadillac Chevrolet GMC

2020 Chevrolet Silverado

NHTSA ID Number: 10205057 Manufacturer Communication Number: 20NA110   Summary This service bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.     61 Affected Products Vehicles MAKE MODEL YEAR CADILLAC ESCALADE 2021 CADILLAC ESCALADE ESV 2021 CHEVROLET 4500HD 2021 CHEVROLET 5500HD …

Read more