2003 GMC Sierra transmission problems

Filed Sep 10, 2014 · Airbags, Body · 134,652 miles · DE · crash

I was parked on a sloped driveway (about 10 - 15 degrees). I started the engine, stepped on the brake pedal and took the car out of park into drive. Brake pedal was normal. I started to roll forward and when I pushed the brake pedal the car did not slow. I slammed the brake pedal and it went all the way to the floor. At this point I went off the end of the driveway onto a 45 degree downward sloped lawn; then into a wooded area at the top of a ravine. I slammed into a tree. The car was judged a total loss by my insurance company. I did not get a brake warning light. The airbags did not deploy. The car was serviced at a union park gmc (wilmington, de) two days prior. Including brake inspection. Cause of brake failure was determined to be ruptured brake line. Both front and rear brakes were failed.

Filed Jul 17, 2012 · Brakes, Engine · 33,338 miles · MA · crash · 2 injuries

Truck was entering major highway,traffic begins too slow due to rush hour ,seeing this occur I stepped on brakes expecting to slow down ,until I realized pedal had gone all the way to floor,then I let up an pushed to floor again-no brakes no room to go left or right impact was unavoidable,impacted car twice which pushed that car into another this truck was serviced by gm dealer for transmission cooling line and engine cooling lines monday tuesday and wednesday, no mention of brake lines issue, accident occurred on friday. Also had contacted gm about original work re: possible warranty. *tr updated 07/25/12 *bf the consumer has since traded the vehicle. Updated 07/31/12

Filed Oct 20, 2011 · Transmission · 78,000 miles · CA

Tl* the contact owns a 2003 gmc sierra. The contact stated that the vehicle failed to accelerate when the accelerator was depressed. The vehicle was towed to the dealer and the manufacturer was contacted, but the vehicle was not repaired. The failure mileage was 78,000 and the current mileage was 79,059.

Filed Dec 2, 2009 · Transmission · 76,000 miles · NV

Tl*the contact owns a 2003 gmc sierra. While the contact was examining his vehicle he noticed that there was oil dripping from the transfer case under the vehicle. The vehicle was taken to the dealer where the contact was informed that a cover should be put on the transfer case to stop the leaking. The vehicle was serviced by the dealer and there were no prior warnings. The current and failure mileages were 76000.

Filed May 4, 2007 · Transmission · 92,000 miles · CA

4 wheel drive transmission will shift from 2 wheel to 4 wheel low while driving. Sometimes it will shift to neutral. This can be very dangerous. You basically don't have the control of the vehicle that you thought you had.

Filed Feb 18, 2007 · Electrical, Transmission · 3,000 miles · MD

The transmission clunks when shifting from 2nd - 3 rd and at times the engine will rev and finally it will take off, this has caused an issue when going through an intersection. The dealership attempted four repairs and it is not fixed. The issue started when the vehicle had 6k miles on it and it is getting worse. The speedometer is sporadic in that it will show speed reduction/increase in segments - as if it were sticking. The erroneous speed indication causes an issue when going too slow or too fast in traffic.

Filed Sep 20, 2006 · Transmission · KS

I have been having trouble with my four wheel drive. The engine seems to bog down like I am pulling something. Took it in to get looked at and the repairman had to replace a part saying that it was automatically kicking in and out. He fixed it and it was fine for about 6 months and now it is doing it again. You can even hear it in the engine, it sounds like it down shifts to pull something.

Filed Nov 28, 2005 · Steering, Transmission · 51,000 miles · AL

Transmission: been fixed 3 times and finally replaced A/C: repaired once front end-steering: repaired 3 times and still not fixed.

Filed Oct 11, 2005 · Transmission · 4,000 miles · AL

Transmission has "clunking" noise when vehicle shifts from second to third gear when starting and down shifting when stopping. The noise started at approximately 4000 miles and continues to progressively get louder as the vehicle continues to be driven. The transmission has not failed to operate at this time but expect it to fail sometime in the near future.

Filed Mar 30, 2005 · Steering, Transmission · CA

Consumer complained about a couple of problems. One was transmission. While driving at various speeds gear slipped. When vehicle was taken to dealer for service mechanic determined that the cause was low oil. The other was for the steering column. When driving at various speeds vehicle knocked and squeaked intermittently. Steering column had to be replaced once before for same problem.