GMC Sierra 3500 owners have reported 1 problem related to power assist brake (under the service brakes category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra 3500 based on all problems reported for the Sierra 3500.
The contact owns a 2004 GMC Sierra 3500. While attempting a turn, the power steering and power brakes failed. A mechanic stated that the power steering shaft snapped and caused the failures. The contact has had the power steering and power brakes replaced on four separate occasions for the same failures. The speed was unknown. The failure mileage was 40,000 and current mileage was 67,000.
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