Two problems related to brake disc caliper have been reported for the 2003 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon.
Was driving down my street @ 20mph, started to brake about 150 feet before the stop sign. The brake pedal went to about 1/2 to 3/4 inches above the floorboard before I came to a stop. . . About 5-6 inches of pedal play. I immediately traveled to my auto repair business doing a lot of downshifting and slow speed travel so as not to cause further damage or an accident. My abs has been disconnected due to corrosion and the prohibitive cost of repairing/replacing it(approx. $1600!!). I just drive cautiously just like when abs didn't exist. The technician inspected, he found 2 failed leaking steel brake lines. . . The rest of the brake lines were severely rusted. The tech re-constructed the brake lines from scratch using a corrosion-resistant alloy tubing. This tubing should not need replacing again. Tech also labored and extracted brake bleed valves from calipers. These were tiny rusted nubs. Tech re-assembled, filled and bled the entire brake system, re-tested for leaks and proper operation. All replacement lines were custom-bent from bulk tubing. The bleeding process took over 2 hours because the abs unit was in-operative. 10 1/2 hrs of tech's time was used. The actual brakes and components at the4 wheels remain unchanged. The entire bill came out at close to $1100 but was discounted by $200 due to customer loyalty,thanks!!! there are close to 900 complaints already concerning this problem with these full-sized gm products. Yes I do live in the so=called rust-belt( cleveland ohio area). But I do know that this incident could have resulted in an accident had it occured at a different time and location.
2003 GMC Yukon xl denali brake lines rusty and burst while wife was driving and lost brakes. This caused a very dangerous situation. About a year ago the dealership replaced several brake lines due to the same problem. Also they replaced the calipers due to rusted bleed valves. They are using substandard materials and making a very dangerous situation for people that drive gm vehicles.