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Gillig engine calibration software's management of the injection of Diesel Exhaust Fluid can allow excessive ammonia into the tailpipe exhaust.

NHTSA campaign 21V-538 · Reported July 15, 2021 · 78 vehicles affected

AFFECTED MODELS
Gillig
VEHICLES AFFECTED
78
REMEDY
Cummins will recalibrate the engine, free of charge.
COST
Free

The short version

Gillig, LLC reported a problem with the exhaust system manifold/header/muffler/tail pipe. Here is what owners need to know.

WHAT

The engine calibration software's management of the injection of Diesel Exhaust Fluid can allow excessive ammonia into the tailpipe exhaust.

WHY IT MATTERS

Exposure to high levels of ammonia can increase the risk of injury.

WHAT TO DO

Cummins will recalibrate the engine, free of charge.

Affected vehicles

These model years are included in NHTSA campaign 21V-538.

YEAR RANGEMODEL
—See NHTSA record 21V-538

What changed

Newest first. The record shows both when the recall began and what has changed since.

  1. Recall reported to NHTSA. LATEST

Drive one of these? Check your VIN to see if your specific vehicle is affected.

Check your VIN

What this record means

Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.

Not affiliated

MyAutoRecalls is not affiliated with Gillig, LLC or the National Highway Traffic Safety Administration.