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Chevrolet and Isuzu trucks may lose rear axle nuts

NHTSA campaign 21V194000 · Reported 2021-03-19 · Isuzu Technical Center of America, Inc.

high How serious is it? About this label

This is serious: losing the driveshaft and stalling, possibly with little warning, raises the risk of a crash, so have the truck inspected promptly even though the notice does not tell owners to park it.

What's wrong, in plain English

This recall covers a group of Isuzu and Chevrolet commercial trucks, including 2017-2020 Chevrolet 4500XD, 4500HD, and 5500HD, 2020 Chevrolet 5500XD, and several Isuzu NPR, NQR, NRR and Reach models. The large U-shaped bolts that hold the rear axle in place may not have been tightened properly, so their nuts can work loose. If that happens, the axle can shift out of line, the driveshaft can come apart, and the truck can lose power to the rear wheels and quit moving.

What you should do

1. Check your VIN at nhtsa.gov/recalls to confirm your truck is covered.
2. Contact your Isuzu or Chevrolet dealer to schedule an inspection, or call Isuzu customer service at 1-866-441-9638 and reference recall V2103.
3. Have the dealer inspect and, if needed, replace and properly tighten the rear axle U-bolt nuts — free of charge.

Affected vehicles (1)

2019 Chevrolet 5500HD

Who to contact

Chevrolet — official Chevrolet recall lookup

Customer service: 1-800-222-1020

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Chevrolet suspension recalls: control arms and bolts that can break · all 5 Chevrolet recalls in this area

Official notice

Component: SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE
Summary: Isuzu Technical Center of America, Inc. (Isuzu) is recalling certain 2015-2017 Isuzu NPR, Reach, 2016-2020 Isuzu NPR XD, NPR HD, NQR, 2016-2021 Isuzu NRR, 2017-2020 Chevrolet 4500XD, 4500HD, 5500HD, and 2020 Chevrolet 5500XD vehicles. The U-bolt nuts for the rear axle may not have been properly tightened and may loosen, causing the axle to misalign.
Safety risk: 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.
Remedy: Isuzu will notify owners, and dealers will inspect and, if needed, replace and tighten the rear axle U-bolt nuts, free of charge. The recall began on April 23, 2021. Owners may contact Isuzu customer service at 1-866-441-9638. Isuzu's number for this recall is V2103.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.