Suspension: rear: springs: leaf spring assembly: u-bolt, leaf spring to axle (Chevrolet, International Motors and Isuzu)
Vehicle recall 21V-194. NHTSA received Isuzu Technical Center of America, Inc.’s report on Mar 19, 2021.
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The short answer
NHTSA received Isuzu Technical Center of America, Inc.’s report on Mar 19, 2021. Copied from NHTSA on Oct 25, 2026.
Every line below is in NHTSA’s own words, with its source beside it.
What’s wrong with it?
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.
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.
NHTSA, Recalls flat file. Released Oct 25, 2026. Updated daily.
- NHTSA’s part: Suspension: rear: springs: leaf spring assembly: u-bolt, leaf spring to axle.
What should you do?
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.
NHTSA, Recalls flat file. Released Oct 25, 2026. Updated daily.
- How to reach the firm: 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.
- Check a vehicle by its VIN at NHTSA: the recalls still open on it are listed there.
Which ones are recalled?
NHTSA counts 258 vehicles potentially involved, across everything this recall names.
Each model year opens its own page: every recall naming it, its owner complaints and its crash ratings.
NHTSA, Recalls flat file. Released Oct 25, 2026. Updated daily.
- Chevrolet 5500HD2020201920182017
- Chevrolet 4500XD2020201920182017
- International Motors Chevy 5500HD20202019
- International Motors Chevy 4500HD20202019
- Chevrolet 4500HD2020201920182017
- Isuzu NPR XD20202019201820172016
- Isuzu NPR HD20202019201820172016
- Chevrolet 5500XD2020
- Isuzu NRR202120202019201820172016
- Isuzu NQR20202019201820172016
- Isuzu NPR201720162015
- Isuzu Reach201720162015
Who is recalling it?
- Made by Isuzu Technical Center of America, Inc..
NHTSA, Recalls flat file. Released Oct 25, 2026. Updated daily.
What the record doesn’t say
- NHTSA’s recall file doesn’t say whether anyone was hurt. Owners’ complaints are counted on each vehicle’s page.
- Whether one vehicle or seat has been fixed: only its maker, or NHTSA’s lookup with a VIN, can say.
- How many have been returned or fixed isn’t in the notice.
Hearth Record wrote these lines.
Sources
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National Highway Traffic Safety Administration, Recalls flat file (FLAT_RCL_POST_2010).
Released Oct 25, 2026 and checked Oct 25, 2026. Updated daily. Public domain (U.S. Government work).
Vehicle, car seat, tire and vehicle equipment recalls, owner complaints and crash ratings are from the National Highway Traffic Safety Administration (NHTSA). Copied on Oct 25, 2026.