Recall 23V635 affects 223 2022-2023 Gillig Low Floor buses because loose driveshaft fasteners can detach. Repair is free at any franchised Gillig dealer.
Gillig is recalling 223 2022-2023 Low Floor transit buses under recall 23V635 because driveshaft fasteners from service repairs were not tightened correctly, allowing the driveshaft to detach. A detached driveshaft can cause loss of vehicle control and raise crash risk; Gillig dealers will complete the repair free of charge.
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What's wrong?
The driveshaft on a 2022-2023 Gillig Low Floor transit bus carries power from the transmission toward the drive axle. Its straps and bolts hold the shaft in place at the transmission output yoke, so the shaft stays aligned while it spins under load. Those fasteners have to be tightened to the correct specification and replaced when required.
On affected buses, the driveshaft fasteners were reinstalled after service repairs with used bolts or incorrect tightening torque. Gillig found that an impact wrench was used during some repair work, and that tool can tighten bolts past the material's yield strength. Over-tightened or reused bolts can break, which lets the driveshaft separate from its mount.
Gillig is not aware of any warning before the fasteners fail. There is no warning sign before failure, so a bus can seem normal until the driveshaft hardware breaks or the shaft detaches.
Who's affected?
Spans the 2022 and 2023 model years, both tied to the same driveline replacement kit.
| 2022 Gillig Low Floor | driveline |
|---|---|
| 2023 Gillig Low Floor | driveline |
| Units affected | 223 |
| Field incidents | NHTSA has logged 1 field incident to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
NHTSA campaign 23V635 says a detached driveshaft can cause loss of vehicle control and increase the risk of a crash. Gillig is not aware of any warning before detachment. If your VIN is included, schedule the repair soon and limit use until the straps and fasteners are replaced. Repair is free at any franchised Gillig dealer.
What should I do?
- Check your VIN to confirm your 2022-2023 Gillig Low Floor bus is included in this recall.
- Contact a franchised Gillig dealer to schedule the free driveshaft strap and fastener replacement that keeps the driveshaft attached.
- Bring the recall notice if Gillig mailed one. If not, reference recall number 23V635 when you call.
- Avoid unnecessary operation until the repair is complete because a detached driveshaft can cause loss of vehicle control.
- Call Gillig customer service at 1-510-264-5073 with questions about scheduling or parts availability.
What happens at the repair
At the dealer, a Gillig technician replaces the driveshaft straps and fasteners that secure the driveshaft after service work. Parts and labor are covered under the recall, so the dealer repair is free. Gillig's reimbursement plan covers customer costs for related repairs completed before the owner letter. If you already paid for a driveshaft strap or fastener repair tied to this recall, bring the repair order and payment records to the service desk so Gillig can review the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 14, 2023 | NHTSA published the recall |
|---|---|
| October 9, 2023 | Owner notification mailed |
| October 16, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 16, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V635?
Recall 23V635 covers 223 2022-2023 Gillig Low Floor transit buses with driveshaft fasteners that were improperly tightened after service repairs. The driveshaft can detach, causing loss of vehicle control and increasing crash risk. Gillig will replace the driveshaft straps and fasteners for free.
What should I do if my 2022-2023 Gillig Low Floor is on this recall?
Check your VIN to confirm your specific bus is included in recall 23V635. If it is, contact Gillig customer service at 1-510-264-5073 or a Gillig service provider to schedule replacement of the driveshaft straps and fasteners. The repair is free.
Is the recall repair free?
Yes. Gillig states it will replace the driveshaft straps and fasteners free of charge. Federal recall law requires the manufacturer to repair the defect at no cost, so parts and labor are covered for included 2022-2023 Low Floor buses.
What is the safety risk?
The risk is loss of vehicle control if the driveshaft detaches. That can increase crash risk for the bus, passengers, and nearby traffic. If your VIN is included, arrange the free driveshaft strap and fastener replacement before returning the bus to regular service.
When were owners notified about recall 23V635?
Gillig mailed owner notification letters on October 9, 2023. If you operate a 2022-2023 Low Floor bus and never received a letter, check your VIN to confirm whether the bus is included, then reference recall 23V635 when contacting Gillig.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V635000 |
|---|---|
| Gillig customer service | 1-510-264-5073 |
| NHTSA recall # | 23V635 |
| NHTSA recall # (full) | 23V635000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →