Two problems related to brake disc caliper have been reported for the 2003 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Sierra 1500 based on all problems reported for the 2003 Sierra 1500.
I went to put it in dr and the brake pedal went to the floor the metal line blue . They had to replace the caliper too. It cost me $475. 89 to get it fix. Not happy. I had chevy with 200,000 miles on it and never replace any brake parts. I under stand this a bad parts on the 1999 to 2003 models [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).
2003 GMC Sierra 1500 pu truck - corroded and failing hydraulic brake lines. This truck was purchased new by me in October 2003, and now has only 23,700 miles on it. A line near the fuel tank, which feeds the rear wheel calipers, rusted through in January 2009. Other lines in numerous locations also show signs of corrosion which will lead to future failures. Mechanics in this area tell me this is very common, even on some newer GMC (and similar Chevrolet) vehicles. Some of these mechanics replace the faulty lines with tubing which is more corrosion-resistant than provided by the manufacturer. A couple of weeks ago, one of the rear, rear wheel emergency brake cables on this vehicle also failed due to corrosion, and the other one showed signs of the same failure impending. Both were replaced. A serious, fundamental and compound hazard exists under this scenario. The manufacturer should be required to recall thee vehicles and replace all critical brake components subject to corrosive failures with corrosion-proof (or at least highly corrosion-resistant) parts.