GMC Sierra 3500 owners have reported 1 problem related to brake master cylinder (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.
I only had 27050 miles when brake lines, burst luckily traveling only 5 mph. I had to replace all brake lines, rear brake calipers. Then at 28,640 miles I had to replace the master cylinder. What in the world is gm doing? what happened to the quality of gm?.
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all problems of the 2003 GMC Sierra 3500
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