One problem related to brake drum wheel cylinder has been reported for the 2006 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 GMC Sierra 1500 based on all problems reported for the 2006 Sierra 1500.
Just did a 4 wheelbrakejob;pads and rotors for thefront, shoes for the rear! had to replace one rear wheel brake cylinder. Started to bleed system, rear brakeline burst, was rusted real bad, replaced the affected line then front line burst and that was rusted real bad also. In checking things over discovered they are all very rusty, afraid if I don't replace them all will have to shortly because they are all in same condition. Note;had to replace transmission lines last year due to corrosion and rust!!!!.