Chevrolet 4500hd, Chevrolet 4500xd, Chevrolet 5500hd, Chevrolet 5500xd, International Motors Chevy 4500hd, International Motors Chevy 5500hd, model years 2015 to 2021. Filed by Isuzu Technical Center of America, Inc. and reported to NHTSA on 19 March 2021. 258 vehicles potentially affected.
What the notice says 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 …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Isuzu's own number for this recall: V2103. That is the number on the owner letter and on the dealer paperwork. 21V194 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 21V194 cover?
- Chevrolet 4500Hd, Chevrolet 4500Xd, Chevrolet 5500Hd, Chevrolet 5500Xd, International Motors Chevy 4500Hd, International Motors Chevy 5500Hd, Isuzu NPR, Isuzu NPR HD, model years 2015-2021.
- What is wrong with them?
- 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.
- What can happen if it is not put right?
- 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.
- Is there a fix yet?
- Yes, and it is free. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Isuzu calls this recall V2103, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “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.”
affected
in the notice
caught
| Campaign | 21V194 |
|---|---|
| Filed by | Isuzu Technical Center of America, Inc. |
| System at fault | Suspension:Rear:Springs:Leaf Spring Assembly:U-Bolt, Leaf Spring To Axle |
| Reported to NHTSA | 19 March 2021 |
| Model years | 2015-2021 |
| Vehicles named | CHEVROLET 4500HD, CHEVROLET 4500XD, CHEVROLET 5500HD, CHEVROLET 5500XD, INTERNATIONAL MOTORS CHEVY 4500HD, INTERNATIONAL MOTORS CHEVY 5500HD, ISUZU NPR, ISUZU NPR HD, ISUZU NPR XD, ISUZU NQR, ISUZU NRR, ISUZU REACH |
What the notice says today
The 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.
The 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.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 732 notices in the record whose component field names suspension. Across that group the median wait before owners were written to was 33 days.
The models named here, across their whole recall history
- Chevrolet 4500hd recalls: 6 US campaigns
- Chevrolet 4500xd recalls: 4 US campaigns
- Chevrolet 5500hd recalls: 6 US campaigns
- Chevrolet 5500xd recalls: 4 US campaigns
- Isuzu NPR recalls: 12 US campaigns
- Isuzu NPR HD recalls: 16 US campaigns
- Isuzu NPR XD recalls: 11 US campaigns
- Isuzu NQR recalls: 12 US campaigns
- Isuzu NRR recalls: 11 US campaigns
- Isuzu Reach recalls: 5 US campaigns
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Isuzu notices we hold
- 26V210: 2025-2027 Chevrolet Low Cab Forward 5500XD, 4500XD, Isuzu NRR, NPR HD, NPR XD, 2025-2026 Chevrolet Low Cab Forward 4500HD, and Isuzu NRR EV
- 25V719: 2022-2026 Isuzu FVR, 2023-2026 Chevrolet 7500XD, 2018-2026 Chevrolet 6500XD, and Isuzu FTR
- 25V630: 2022-2026 Isuzu FVR, Isuzu FTR, Chevrolet 6500XD, and 2023-2026 Chevrolet 7500XD
- 25V319: 2025 NRR-EV
- 25V217: 2025 NRR EV trucks
- 24V467: 2025 FTR
- 24V157: 2019-2024 FTR, 2020-2024 Chevrolet LCF 6500XD, 2022-2024 FVR, and 2023-2024 Chevrolet LCF 7500XD
- 23V564: 2023-2024 NPR Gas, NPR HD Gas, 2024 NQR Gas, NRR Gas, 2023-2024 Chevrolet LCF 3500HG, Chevrolet LCF 4500HG, 2024 Chevrolet LCF 5500HG, and Chevrolet LCF 5500XG
All 40 Isuzu campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 21V194 on 23 August 2026, they were:
- Defect summary
011feaee - Consequence
350749f9 - Remedy
93d9ee69
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 21V194 · how the whole register is watched
This notice names one vehicle among several registers that have written about it. Every notice this site holds for the Isuzu NPR HD, in all seven, is kept on that vehicle's own page, with the newest in each.
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