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

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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 IsuzueBay Technical Center of America, Inc.

Components SUSPENSION

Potential Number of Units Affected 258

 

Summary

IsuzueBay Technical Center of America, Inc. (IsuzueBay) is recalling certain 2015-2017 IsuzueBay NPR, Reach, 2016-2020 IsuzueBay NPR XD, NPR HD, NQR, 2016-2021 IsuzueBay 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.

 

Remedy

IsuzueBay 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 IsuzueBay customer service at 1-866-441-9638. IsuzueBay’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.

 

Check if your IsuzueBay Truck has a Recall

 


Condition

IsuzueBay Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2017 and 2020 model year Chevrolet Low Cab Forward vehicles. In the affected vehicles, the U-bolt nuts for the rear axle may not have been properly tightened at the manufacturing plant. If the U-Bolt nuts loosen and fall off, the axle can misalign with the centering pin, allowing the rear axle to move rearward and the propeller shaft to separate at its slip joint. If the propeller shaft separates, the rear wheels will not receive power from the engine and the vehicle will stall, increasing the risk of a crash.

 

Correction

Dealers will inspect and, if needed, replace and tighten the rear axle U-bolt nuts.

 

 

Parts

Quantity Part NamePart No.
4 per vehicleBOLT, RR AUX SPR94127924
8 per vehicleWASHER, RR SPR U BOLT97360118
8 per vehicleNUT, FRT SPR U BOLT97360121
4 per vehicleBOLT U, RR SPR98128783
8 per vehicleNUT, RR SPR U BOLT94060479

 


Frequently Asked Questions (FAQs) for Safety Recall N212333830 Rear Axle U-Bolt Nuts

 

These questions and answers are being provided to help GM dealers respond to inquiries from involved vehicle owners about the Safety recall identified above.

 

Q1) Which vehicles are involved?

Certain 2017 Chevrolet LCF 4500HD, 4500XD, 5500HD and 2020 Chevrolet LCF 4500HD, 4500XD, 5500HD, and 5500XD Trucks.

 

Q2) What is the issue or condition?

The U-bolt nuts for the rear axle may not have been properly tightened at the manufacturing plant.

 

Q3) What symptoms may be experienced?  What warning signs may be associated with the issue or condition described?

Drivers may notice the rear axle out of place during the pre-trip inspection and would hear a loud noise if the propeller shaft separated during use.

 

Q4) What is the remedy/repair?

Dealers will inspect and, if needed, replace and tighten the rear axle U-bolt nuts.

 

Q5) What is the safety risk?  Is the vehicle safe to drive?

The U-bolts and U-Bolt nuts secure the rear axle to the leaf spring.  If the U-Bolt nuts loosen, the axle will initially be held in place by the leaf spring centering pin.  With continued use, the axle can misalign with the centering pin, allowing the rear axle to move rearward and the propeller shaft to separate at its slip joint.  If the propeller shaft separates, the rear wheels will not receive power from the engine and the vehicle will stall, increasing the risk of a crash.

 

Q6) Does the customer have to pay for this remedy/repair?

No, this inspection/repair will be done at no cost to the customer.

 

Q7) Is the remedy/repair available now?

An inspection is available that allows dealers to close the field action if a vehicle passes.  When a sufficient quantity of parts are available dealers can begin repairing vehicles.

 

Q8) What should customers do until recall repairs can be completed?  Are there any special instructions?

If special instructions are provided, they will be included in the notification letters to customers.

 

Q9) How can customers check to see if their vehicle is involved in this field action?

Customers who own a vehicle involved in the field action will be notified by mail by General MotorseBay, but they may also check their Vehicle Identification Number (VIN) for field actions in GM Owner Center at https://my.gm.com/recalls or via NHTSA’s website at https://vinrcl.safercar.gov/vin/.

 



40 Affected Products

Vehicles

MAKEMODELYEAR
CHEVROLET4500HD2017-2020
CHEVROLET4500XD2017-2020
CHEVROLET5500HD2017-2020
CHEVROLET5500XD2020
ISUZUeBayNPR2015-2017
ISUZUeBayNPR HD2016-2020
ISUZUeBayNPR XD2016-2020
ISUZUeBayNQR2016-2020
ISUZUeBayNRR2016-2021
ISUZUeBayREACH2015-2017

 


17 Associated Documents

Miscellaneous Document- Chronology

RMISC-21V194-6065.pdf 682.729KB

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Recall Acknowledgement

RCAK-21V194-4251.pdf 646.27KB

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Manufacturer Notices(to Dealers,etc)

RCMN-21V194-6556.pdf 116.153KB

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Remedy Instructions and TSB

RCRIT-21V194-2816.pdf 460.745KB

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Defect Notice 573 Report

RCLRPT-21V194-8479.PDF 221.924KB

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Manufacturer Notices(to Dealers,etc)

RCMN-21V194-4872.pdf 100.933KB

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Manufacturer Notices(to Dealers,etc)

RCMN-21V194-3452.pdf 11.643KB

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Remedy Instructions and TSB

RCRIT-21V194-5211.pdf 340.579KB

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Remedy Instructions and TSB

RCRIT-21V194-9117.pdf 486.487KB

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Remedy Instructions and TSB

RCRIT-21V194-9606.pdf 1309.835KB

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Owner Notification Letter(Part 577)

RCONL-21V194-1270.pdf 277.872KB

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Manufacturer Notices(to Dealers,etc)

RCMN-21V194-0575.pdf 57.111KB

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Manufacturer Notices(to Dealers,etc)

RCMN-21V194-1365.pdf 395.902KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-21V194-3092.pdf 24.438KB

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Recall Quarterly Report #2, 2021-3

RCLQRT-21V194-9264.PDF 211.257KB

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Recall Quarterly Report #3, 2021-4

RCLQRT-21V194-1469.PDF 211.344KB

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Recall Quarterly Report #1, 2021-2

RCLQRT-21V194-0968.PDF 211.157KB

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Last update on 2025-04-16 / Affiliate links / Images from Amazon Product Advertising API


 

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