Driving when entire instrument panel went black. off/on at random. knocking sound started about the same time. took car in to be checked out. was told brake lines were completely rusted, and needed a new transmission. we paid for repair of the instrument panel. talked to our dealership, holman in cincinnati oh, about breaks. no recall listed. they have never told us the brake lines were rusted. offered us $150 brake kit to do ourselves (cant do) or they can do it for $1500-2000. can't afford. it sits in our driveway, epic fail gmc. we bought a honda.
Brake hose in engine compartment developed pinhole leak due to heavy rust. brake pedal went to the floor. brake bleeder screws rusted solid- can't bleed lines after repairs. it appears that inferior quality metal brake lines were used that rust easily. this is a very low mileage vehicle. this is a very common problem with these trucks and gm needs to held accountable, and a recall should be issued as very serious crashes may occur. *tr