Recall 24V959 affects 332 2023-2024 Gillig Low Floor buses for an HVIL air-compressor wiring defect. Repair is free at any franchised Gillig dealer.
Gillig is recalling 332 2023-2024 Low Floor transit buses because the high voltage electric air compressor is outside the High Voltage Interlock Loop, leaving the bus unable to warn the operator about a loose or disconnected compressor power cable. That missed warning can increase the risk of electrical shock injury, and the Gillig dealer repair is free.
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What's wrong?
The HVIL on the 2023-2024 Gillig Low Floor is a low-voltage safety circuit tied to the bus's high-voltage electric system. Its job is to watch high-voltage connectors and wiring, including the electric air compressor circuit, so the bus can detect when a high-voltage connection is loose or disconnected.
On affected buses, the high-voltage electric air compressor was not connected to that interlock loop. That leaves the HVIL unable to detect a loose or disconnected compressor power cable, which raises the risk of high-voltage exposure during operation or service.
Gillig is not aware of any early warning. There is no warning sign before failure, so an owner or fleet operator should not expect a light, sound, or driveability change to confirm the problem.
Who's affected?
Covers the 2023 and 2024 Low Floor model years. The same HVIL low-voltage circuit cable is named for both years.
| 2023 Gillig Low Floor | electrical system |
|---|---|
| 2024 Gillig Low Floor | electrical system |
| Units affected | 332 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the list, but the VIN decides. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
If the operator is not alerted to a power cable issue, electrical shock risk rises during bus operation or service. Gillig reports no early warning, so treat suspected cable damage as a reason to take the bus out of service and call the dealer. Repair is free at any franchised Gillig dealer.
What should I do?
- Check your VIN to confirm your 2023-2024 Gillig Low Floor is included in this recall.
- Contact a franchised Gillig dealer to schedule the free additional harness installation that lets the HVIL detect a loose or disconnected air-compressor power cable.
- Reference recall number 24V959 when you call, and bring the recall notice if your fleet received one.
- Avoid handling a loose or disconnected compressor power cable until the repair is complete; electrical shock is the listed risk.
What happens at the repair
At the dealer, a Gillig technician installs an additional electrical harness so the High Voltage Interlock Loop extends to the electric air compressor. That lets the HVIL include the compressor power connection in its safety circuit. Parts and labor are covered under the recall. Gillig is not providing a separate reimbursement program because earlier product failures would have been handled under Gillig's warranty. If you have prior repair paperwork, ask Gillig customer service or the service desk how warranty coverage applies.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| December 20, 2024 | NHTSA published the recall |
|---|---|
| February 1, 2025 | Dealer notification began |
| February 1, 2025 | Dealer notification ended |
| February 1, 2025 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| February 1, 2025 | Interim owner notification (was planned for this date) |
| February 12, 2025 | Owner notification mailed |
Frequently asked questions
What is recall 24V959?
Recall 24V959 covers 332 2023-2024 Gillig Low Floor transit buses with a high-voltage electric air compressor that is not connected to the High Voltage Interlock Loop. Gillig dealers will install an added electrical harness for free.
What should I do if my 2023-2024 Gillig Low Floor is on this recall?
Check your VIN to confirm your specific bus is included in recall 24V959. If it is, contact a Gillig dealer to schedule the electrical harness installation. Reference recall number 24V959 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair safety defects at no cost, and Gillig's listed remedy is free. A Gillig dealer will install an additional electrical harness that extends the HVIL loop to the air compressor.
What is the safety risk?
The safety risk is electrical shock. If the air compressor power cable is loose or disconnected, the HVIL does not alert the operator to that power cable issue, increasing the risk of injury by electrical shock.
When were owners notified about recall 24V959?
Gillig mailed owner notification letters on February 12, 2025. If you manage or own a 2023-2024 Gillig Low Floor bus and did not receive a letter, check your VIN and contact a Gillig dealer or Gillig customer service at 1-800-735-1500.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V959000 |
|---|---|
| Gillig customer service | 1-800-735-1500 |
| NHTSA recall # | 24V959 |
| NHTSA recall # (full) | 24V959000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (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 →