GMC Sierra owners have reported 1 problem related to subframe/mounting bracket (under the suspension 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 2012 GMC Sierra. The contact stated that during a vehicle inspection, the contact was informed that the subframe was severely corroded with holes. The vehicle was taken to an independent mechanic, who diagnosed that the subframe needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
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