Three problems related to power train 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.
The contact owns a 2003 GMC Sierra 1500 hd. The contact stated that while entering the driveway at various speeds, the vehicle failed to respond to deceleration attempts. The vehicle was not diagnosed or repaired. The manufacturer was contacted about the failure. The failure mileage was 120,000.
My 2003 GMC Sierra 1500 sle has corroded brake, transmission and fuel lines. A certified mechanic stated that they all need replaced or breakage and leakage will occur without warning causing break, transmission or fuel delivery or fire damages. Please help with this problem ASAP. 00.
Starting at <5k miles the vehicle power train clunked when shifting from 2nd to 3rd gear. Now at 70k miles it clunks when shifting between all gears except final drive. The dealership replaced the output shaft on the tranny, then the u-joints, and modified the electrical shift patern. It still clunks. Power steering intermittently locks up at slow speed turns, especially when braking. Light bulbs burn out almost every three months. Had to pay ($486. 00) for replacing the intake manifold gasket when vehicle had little over 40k miles. Brakes fade and the pedal almost goes to the floor, again intermittent. I have almost caused several accidents due to the steering and brake issues. GMC issued a letter stating "this is a normal occurance and will not cause damage. " well, it's getting worse in sound and clunking harder during shifting.