GMC Sierra owners have reported 2 problems related to integrated trailer brake control (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra based on all problems reported for the Sierra.
The contact owns a 2017 GMC Sierra denali 2500. The contact stated that while driving 25 mph downhill, the message “reduced engine power” was displayed. While the message was displayed, the trailer brakes and exhaust brake became inoperable, and the braking distance increased. The failure mileage was approximately 186,000.
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The contact owns a 2014 GMC Sierra. The contact stated that upon depression on the brake pedal, the trailer brake system warning message appeared on the instrument panel. The contact also stated that a fuel odor would emit from the vehicle. The vehicle had yet to be serviced or diagnosed. The dealer nor the manufacturer had yet to be notified of the failure. The failure mileage was 122,000.
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all problems of the 2014 GMC Sierra
🔎.