Recall 21V563 affects 148 2020-2021 Gillig Low Floor buses for fuel hose leaks. Repair is free at any franchised Gillig dealer.
Gillig is recalling 148 2020-2021 Low Floor vehicles equipped with Cummins L9 diesel engines, remote Stage 2 fuel filters, and pressurized hoses because fuel can leak from the hose between the fuel pump and remote filter head. A leak near an ignition source increases the risk of fire, and Gillig dealers will complete the recall repair free of charge.
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What's wrong?
The 2020-2021 Gillig Low Floor buses in this recall use Cummins L9 diesel engines with a remote Stage 2 fuel filter. The fuel filter hose carries diesel fuel under pressure from the fuel pump to the remote filter head, where the fuel is cleaned before it returns to the engine supply path. That hose has to stay sealed while the engine vibrates, heats up, and moves through normal service.
On affected buses, the fuel hose assembly was built with inadequate design and quality. The hose between the fuel pump and remote fuel filter head can leak under pressure. Diesel fuel that escapes in the engine area creates a fire risk, so Gillig is replacing the defective Cummins fuel hoses with new hoses that have a different part number and are visibly different.
There is no warning sign before failure. If fuel odor, visible wetness, or dripping diesel appears around the engine or fuel filter area, treat it as an active leak and keep the bus out of service until it is inspected.
Who's affected?
Both model years use the same remote fuel filter connection hoses named in the recall.
| 2020 Gillig Low Floor | fuel system |
|---|---|
| 2021 Gillig Low Floor | fuel system |
| Units affected | 148 |
| 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 this recall applies to your specific bus.
What's the safety risk?
A fuel leak near an ignition source increases the risk of a fire. Schedule the repair soon, and keep the bus away from ignition sources if fuel is suspected. Repair is free at any franchised Gillig dealer.
What should I do?
- Check your VIN to confirm your 2020-2021 Gillig Low Floor is included in this recall.
- Contact a franchised Gillig dealer to schedule the free pressurized fuel-hose replacement that fixes the leak path between the fuel pump and remote fuel filter head.
- Bring the recall notice if you have it, and reference recall number 21V563 when you call.
- Call Gillig customer service at 1-510-264-5073 if the dealer needs help matching the repair to your bus.
- Park and shut the bus down if you smell diesel fuel or see a fuel leak; keep it away from ignition sources until the fuel hoses are replaced.
What happens at the repair
At the dealer, a Gillig technician replaces the fuel hoses covered by recall 21V563. The replacement parts and labor are free under the recall. Out-of-pocket repairs before the owner notice are handled through the manufacturer's limited warranty, not through a separate reimbursement program, because the source says any pre-notice product failure would have been replaced under that warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| July 23, 2021 | NHTSA published the recall |
|---|---|
| September 20, 2021 | Interim owner notification (was planned for this date) |
| October 15, 2021 | Owner notification mailed |
Frequently asked questions
What is recall 21V563?
Recall 21V563 covers 148 2020-2021 Gillig Low Floor vehicles equipped with Cummins L9 diesel engines, remote Stage 2 fuel filters, and pressurized hoses. The fuel hose between the fuel pump and remote fuel filter head can leak. Cummins will replace the fuel hoses for free.
What should I do if my 2020-2021 Gillig Low Floor is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 21V563. If it is, contact Gillig customer service at 1-510-264-5073 and ask how to arrange the Cummins fuel-hose replacement. Reference recall number 21V563 when you call.
Is the recall repair free?
Yes. Federal recall law requires the recall repair to be completed at no cost, and the remedy for recall 21V563 states that Cummins will replace the fuel hoses free of charge. Parts and labor are covered for included vehicles.
What is the safety risk?
A fuel leak near an ignition source increases the risk of fire. This recall involves the diesel fuel hose between the fuel pump and the remote fuel filter head. If your VIN is included, arrange the free hose replacement through Gillig customer service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V563000 |
|---|---|
| Gillig customer service | 1-510-264-5073 |
| NHTSA recall # | 21V563 |
| NHTSA recall # (full) | 21V563000 |
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 →