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Vehicle recall 21V194000 · March 19, 2021

Isuzu NRR, Isuzu NPR-HD and 10 more models

The U-bolt nuts for the rear axle may not have been properly tightened and may loosen, causing the axle to misalign.

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

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.
Consequence
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Recall details

NHTSA campaign
21V194000
Reported to NHTSA
March 19, 2021
Filed by
Isuzu Technical Center of America, Inc.
Manufacturer campaign
V2103
Owner notification
April 23, 2021
Vehicles potentially affected
258
Initiated by
the manufacturer
Components
Suspension › Rear › Springs › Leaf spring assembly › U-bolt, leaf spring to axle
Recall 21V194000 on nhtsa.gov, with the manufacturer’s documents

Vehicles covered

As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.

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