Recall 23V740 affects 4,286 2019-2023 Gillig Low Floor buses for loose transmission yoke bolts. Repair will be free at any franchised Gillig dealer once available.
Gillig is recalling 4,286 2019-2023 Low Floor transit buses because the transmission yoke can separate, leading to driveshaft separation and sudden loss of drive power. That loss of power can increase crash risk, and a disabled bus can require an evacuation in traffic; the Gillig dealer repair will be free once available.
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What's wrong?
The output yoke bolt on affected 2019-2023 Gillig Low Floor transit buses is part of the driveline connection at the back of the Allison transmission. It clamps the yoke to the transmission output shaft, so engine power can pass through the driveshaft to move the bus. That joint has to stay tight while the bus starts, stops, and shifts all day.
In these buses, the bolted connection between the driveline yoke and the transmission output shaft can loosen. Allison has not identified the final cause, but its filing points to the high start and stop duty cycle of transit buses, which puts heavy twisting force through that joint. If the yoke separates, the driveshaft can separate and the bus can suddenly lose drive power.
There is no warning sign before failure. Allison told Gillig that the failure can happen without warning, so a driver should not count on noise, vibration, or a dashboard light to appear first.
Who's affected?
The scope spans five model years with the same driveline component listed for each year.
| 2021 Gillig Low Floor | driveline |
|---|---|
| 2023 Gillig Low Floor | driveline |
| 2019 Gillig Low Floor | driveline |
| 2020 Gillig Low Floor | driveline |
| 2022 Gillig Low Floor | driveline |
| Units affected | 4,286 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
A sudden loss of drive power can increase the risk of a crash. If the bus becomes disabled in traffic, passenger evacuation in an uncontrolled traffic situation raises the risk of injury. ATI reported the failure can happen without warning, so schedule the inspection promptly. Repair will be free at any franchised Gillig dealer once available.
What should I do?
- Check your VIN to confirm your 2019-2023 Gillig Low Floor is included in this recall.
- Watch for the Gillig owner letter mailed December 11, 2023, or ask Gillig customer service for a copy if your fleet did not receive it.
- Contact Gillig customer service at 1-510-264-5073 to confirm repair timing and reference recall number 23V740 when you call.
- Schedule the free transmission-yoke-bolt inspection and tightening once Gillig opens the repair; this addresses driveshaft separation and sudden loss of drive power.
- Limit operation until the repair is complete, and plan service routes so a disabled bus can be moved out of traffic safely.
What happens at the repair
Once the final dealer repair is available, a Gillig technician will work with Allison Transmission to inspect the transmission yoke bolts and tighten them as needed. The recall repair will be free, with parts and labor covered. Repairs already paid before the recall notice are handled through ATI's or the vehicle manufacturer's warranty, not through a separate reimbursement program. Ask the Gillig service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| November 3, 2023 | NHTSA published the recall |
|---|---|
| December 1, 2023 | Dealer notification began |
| December 1, 2023 | Dealer notification ended |
| December 1, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| December 1, 2023 | Interim owner notification (was planned for this date) |
| December 11, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V740?
Recall 23V740 covers 4,286 2019-2023 Gillig Low Floor transit buses with transmission yoke bolts that can loosen and let the driveshaft separate. That can cause sudden loss of drive power, increasing crash risk and creating passenger evacuation risk if the bus is disabled in traffic. Gillig will inspect and tighten the bolts for free.
What should I do if my 2019-2023 Gillig Low Floor is on this recall?
Check your VIN to confirm your specific bus is included in recall 23V740. If it is, contact Gillig customer service or your Gillig service contact to arrange the transmission yoke bolt inspection and tightening. Reference recall number 23V740 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. For recall 23V740, Gillig will work with Allison Transmission Inc. to inspect and tighten the transmission yoke bolts as needed, free of charge.
Is it safe to drive a Gillig Low Floor with this recall?
The recall does not include a do-not-drive order. The safety risk is a sudden loss of drive power if the transmission yoke separates, which can increase crash risk and create evacuation risk for passengers if the bus stops in traffic. Confirm the VIN and arrange the free repair.
When were owners notified about recall 23V740?
Gillig mailed owner notification letters on December 11, 2023. If you operate a 2019-2023 Gillig Low Floor and never received a letter, check your VIN to confirm whether the bus is included, then contact Gillig customer service at 1-510-264-5073.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V740000 |
|---|---|
| Gillig customer service | 1-510-264-5073 |
| NHTSA recall # | 23V740 |
| NHTSA recall # (full) | 23V740000 |
Source documents
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 →