Engine Engine Control Module (ecu/ecm) problems of the 2021 GMC Terrain

One problem related to engine engine control module (ecu/ecm) has been reported for the 2021 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 GMC Terrain based on all problems reported for the 2021 Terrain.

1 Engine Engine Control Module (ecu/ecm) problem

Failure Date: 06/20/2025

The contact owns a 2021 GMC Terrain. The contact stated that the transmission was previously replaced. The contact stated that upon starting the vehicle, the check engine warning light illuminated. The failure had occurred intermittently. Additionally, the contact stated that while driving approximately 15-20 mph and depressing the accelerator pedal, the vehicle failed to respond for approximately 1 minute. The vehicle was taken to the Nissan dealer it was purchased several times. The dealer retrieved diagnostic trouble codes: p057c and p057e, and the brake pedal position sensor was replaced twice; however, the failure persisted. The Nissan dealer took the vehicle to a gm dealer, where the cause of the failure could not be determined. The vehicle was not repaired. The contact related the failure to TSB number: pit5994 (diagnostic tip for reduced or low engine power on acceleration). The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 78,843.


Other Engine And Engine Cooling related problems of the 2021 GMC Terrain

Engine And Engine Cooling problems
4
Engine Engine Control Module (ecu/ecm) problems
1


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