Speed Control Linkage Problems of GMC Sierra

Throttle becomes sticky when closed. As a result extra force is required on the accelerator when initialy depressed. This is an extremly dangerous situation especialy in parking lots or other tight, highly populated areas since extra force is required on the accelerator to "break it free" once it does "break free" the vehicle can lunge/lurch foreward uncontroled. This situation makes smooth throttle control unobtainable. The problem seems to get worse with higher ambient temperatures as I assume the throttle plate expands when hot and binds in the throttle body. Cleaning the throttle body provides relief for a very short period. I have read about this problem on several internet message boards and believe that gm offers an updated throttle body to correct this problem. Due to the extreem safety hazzard I feel that gm is neglegent in not offering to correct this problem at their cost, as gm does seem to be aware of the deficiency.

See all problems of the 2000 GMC Sierra 🔎.

Antilock system engages while coming to a slow stop happens almost constantly. Throttle sticks on initial contact.

We purchased a used 2000 GMC and within a month experienced experienced throttle sticking closed so severe you could not move the vehicle. Then if you applied a lot of pressure it would lurch forward. We took it in after a couple of months to a local GMC dealer and they said it was the throttle body and it was warped and would need to be replaced. They had no explanation why it would have become warped. We paid 643. 00. When we picked up the vehicle my wife went online to research if there were any problems and came across a reference to a TSB so we checked out NHTSA and under defects was listed the investigation that is still open about the throttle body( ea02-015) . We were very upset and took in copies of the TSB and spoke to the service manager. On our receipt was listed another TSB #00-06-04-007b as to why they replaced it. But with a charge. We felt they should had disclosed this problem and that odi was investigating it . The service manager said he would call GMC and we received a call the next day that GMC would be sending us a check for 400 to cover the part. That seems fair but we definately feel this is a safety issue. Had we not been older drivers and very cautious we could have been involved in an accident. It could have stuck open as well as closed.

While traveling on highway vehicle will acellerate suddenly. Dealership is aware of problem.

See all problems of the 1999 GMC Sierra 🔎.

While in reverse and going down a sloped driveway in winter condition, vehicle suddenly accelerated to an unknown speed. It crashed into a tree on other side of the road. Dealership has not examined vehicle. The truck was examined by dealer's service department. Technician cleaned linkage and made accelerator pedal easier to operate. The technician stated that a carbon build up on some related part when engine was cold, might have caused a malfunction.

See all problems of the 1998 GMC Sierra 🔎.

Accelerator cable was badly frayed and coming apart. Vehicle suddenly accelerated while driving. Vehicle would not stop right away after brakes were applied. Engine kept revving.

See all problems of the 1997 GMC Sierra 🔎.

While pulling inside of the driveway and coasting along, engine just roared up and vehicle accelerated. Vehicle jumped over landscape timbers and hit basement wall. Also, front brakes locked up, but back wheels were still moving and in motion.

While driving vehicle will lunge forward, and will not return to the rpm until about 5 seconds afterwards. Manufacturer stated that is the way the computer operates.

Throttle linkage and control failed, causing sudden acceleration, resulting in an accident.

See all problems of the 1996 GMC Sierra 🔎.

Throttle plate sticks at idle requiring additional force to release. This caused vehicle to fail to come out of idle at red lights and intersections. Dealership charged me repeatedly for cleanings and argued with me regarding TSB's about the throttle. I was told I was not supposed to have that information and it didn't matter. I was told throttle body systems are normal maintenance and the throttle body needed replacement every 10,000 miles. The drivers seat (manual) would unexpectedly release throwing me into the steering wheel. Plastic part broke from seat track. Dealership failed to fix, damaged the seat further trying to grind on the track and hammered seat track in the closed position to force the seat from moving. Charged me for damaging the seat. Gm customer service called to argue my complaints, I was told they didn't have any control over the dealership, and if they said the seat was fixed they would back the dealership. This is going to cause me to have an accident.