GMC Sierra owners have reported 3 problems related to power assist brake hoses, lines/piping, and fittings (under the service brakes category). The most recently reported issues are listed below.
Brake line that runs along frame rail severely rusted and failed under braking, causing me to nearly rear end another car. I removed it from the truck and took it by the dealer and the service department said this is common for a vehicle with 78,000 miles to have this type of failure.
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all problems of the 1997 GMC Sierra
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The contact stated while coming to a stop she depressed the brakes and the pedal went to the floor. She noticed brake fluid all over the road. The dealer told the manufacturer the brake lines were completely rusted. The rotors have been turned once due to accumulation of rust. The dealer told her the recall 05v379000 did not have anything to do with the brake system, just the sensor. Also, the dealer told her that because she did not have an established relationship, did not show loyalty to a specific dealer, and was not a current customer of GMC, they could not fix the vehicle under warranty.
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all problems of the 2000 GMC Sierra
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1997 GMC Sierra c1500 pick up truck - the consumer complained about steering and brake problems. Took the truck to the GMC shop and they said that the steering box wore out, and needed to be replaced because it had play in the wheel. It has not been replaced as of yet. Also, while driving on the road the brakes malfunctioned. The consumer was not approaching a stop, but was coming up onto a big truck, went to apply the brakes and had no brakes. The brakes were repaired with all new brake lines, but they were still making noise and id not feel right. There have been no recalls on this vehicle.