Recall 14V084 affects 643 2010-2014 Gillig Low Floor buses because intake-manifold condensation can freeze. ECM calibration is free at any franchised Gillig dealer.
Gillig is recalling 643 2010-2014 Low Floor transit buses equipped with certain Cummins Westport ISL G engines because condensation can freeze in the intake manifold and disrupt the pressure sensor. That sensor problem can raise exhaust temperatures or send flames from the exhaust pipe, increasing fire risk; the Gillig dealer repair will be free once available.
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What's wrong?
The intake manifold on a 2010-2014 Gillig Low Floor transit bus channels air into the engine. On buses equipped with the Cummins Westport ISL G engine, the intake manifold pressure sensor reads pressure inside that air path and sends that information to the engine computer. The computer uses the reading to manage engine operation.
In cold weather, condensation inside the intake manifold can freeze. Ice in that area can interfere with the pressure sensor, so the sensor does not read the manifold pressure the way it is designed to. When that signal is disrupted, the engine computer is working from bad intake-pressure information instead of a clean sensor reading.
There is no warning sign before failure. A driver or maintenance team should treat cold-weather engine problems on an included bus as a reason to check the recall status and the intake manifold pressure sensor.
Who's affected?
Spans 5 model years (2010-2014), all tied to the engine.
| 2014 Gillig Low Floor | Engine |
|---|---|
| 2013 Gillig Low Floor | Engine |
| 2011 Gillig Low Floor | Engine |
| 2012 Gillig Low Floor | Engine |
| 2010 Gillig Low Floor | Engine |
| Units affected | 643 |
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?
Improper sensor operation can raise exhaust temperatures or produce flames from the exhaust pipe, increasing the risk of a vehicle fire. Drive cautiously, watch for unusual exhaust heat or flame, and contact a Gillig dealer for recall guidance soon. Repair will be free at any franchised Gillig dealer once available.
What should I do?
- Check your VIN to confirm your 2010-2014 Gillig Low Floor bus is included in this recall.
- Contact a franchised Gillig dealer to ask whether the free ECM calibration is ready for your bus.
- Reference recall number 14V084 when you call, and mention the Cummins Westport ISL G engine intake-manifold sensor issue.
- Bring the owner notice if Gillig mailed one, or give the dealer the VIN and recall number at scheduling.
- Avoid operating the bus in cold weather until the ECM calibration is complete, since frozen condensation can interfere with the sensor and raise exhaust temperature or flames from the exhaust pipe.
What happens at the repair
At the dealer, a Gillig technician uploads a new ECM calibration for the Cummins Westport ISL G engine. That calibration is the known remedy for the intake manifold pressure sensor interference described in campaign 14V084. Parts and labor are covered by the recall. The remedy status is not listed here, so confirm scheduling with a Gillig dealer before arranging service.
Timeline
| February 27, 2014 | NHTSA published the recall |
|---|---|
| March 20, 2014 | Owner notification mailed |
Frequently asked questions
What is recall 14V084?
Recall 14V084 covers 643 2010-2014 Gillig Low Floor transit buses with Cummins Westport ISL G engines. Condensation in the intake manifold can freeze in cold weather and interfere with the intake manifold pressure sensor. Dealers will upload a new ECM calibration for free.
What should I do if my 2010-2014 Gillig Low Floor is on this recall?
Check your VIN to confirm your specific bus is included in recall 14V084. If it is, contact Gillig or an authorized Cummins service location to schedule the ECM calibration update. Reference recall 14V084 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 14V084, dealers will upload the new ECM calibration free of charge, with parts and labor covered under the recall.
What is the safety risk?
The safety risk is vehicle fire. If the intake manifold pressure sensor does not operate properly, the engine can produce elevated exhaust temperatures or flames from the exhaust pipe. The free ECM calibration is the repair path for buses included by VIN.
When did the recall repair begin?
Gillig and Cummins began the recall repair on March 20, 2014. That means the ECM calibration update has been open for affected buses since that date. Check your VIN, then ask the service desk to confirm the open recall before scheduling.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/14V084000 |
|---|---|
| Gillig customer service | 1-510-785-1500 |
| NHTSA recall # | 14V084 |
| NHTSA recall # (full) | 14V084000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Quarterly Report (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →