Transport CanadaCritical
2021 RAM 3500Transport Canada Recall #2021629
The official notice
Defect
On certain trucks or chassis-cabs equipped with a 6.7 L Cummins diesel engine, the intake air heater relay could short circuit. This could happen even when the vehicle is parked and the ignition switch is in the off position. Note: Trucks repaired under recall 2021-138 will also require this repair.
Safety Risk
A short circuit could create a fire risk.
Remedy
FCA Canada will notify owners by mail and instruct you to take your vehicle to a dealer to inspect and replace the intake air heater relay, as necessary. FCA recommends that you should park your vehicle outside and away from other vehicles or buildings until the recall repairs are completed.
6,680 vehicles affectedMfr ref: Y76Updated June 10, 2026