Vehicle Speed Control Problems of GMC Sierra - part 2

While traveling on the highway the vehicle speed control will suddendly get stuck. The dealership is aware of the problem. Mr.

See all problems of the 1999 GMC Sierra 🔎.

Mr.

See all problems of the 2000 GMC Sierra 🔎.

When coasting at approximately 40 mph, mph decreased to about 25 mph, and then suddenly engaged into a fast jump as if the gas pedal was touched, but it wasn't. This has occurred on two different occasions. Please fill additional information.

See all problems of the 2001 GMC Sierra 🔎.

At an intersection consumer applied gas to cross intersection, nothing happened, engine revved, but vehicle did not move. After a few minutes of going through gears, vehicle finally moved again.

When accelerating fast, must let off of throttle so transmission will shift from 1-2, and 3-4 gears. All fluid and filter were changed, problem not fixed.

While driving engine will continue to run at 2000 rpms while vehicle is in neutral. Engine will runaway, and only way to slow vehicle down is to apply brakes while vehicle is in neutral. The vehicle was not safe to drive.

See all problems of the 1997 GMC Sierra 🔎.

On 12/13/99 when slowing down to make a left turn, the tourque converter locked up and stalled the truck in middle of traffic while crossing the left lane. With difficulty, truned the wheel back to the right and pull off the road and shifted into park and restarted the truck. Luckly there was very little on coming traffic. On 2/11/00 while coming into a rolling right hand turn and going about 15 mph, I started to brake and the tourque converted again locked up and the engine stalled. Again with difficulty I was able to steer into the corner and make the corner. As the truck was free rolling it just started itself and it contiuned on, almost crached into two cars waiting at the stop sign. If my wife was driving there would have been a collision. In October when waiting for a traffic light to change, I accellerated and truck didn't move. I stepped on the brake shifted to park and then back to drive and it finally went into gear and moved. Have been back to the dealer twice with tourque converter concerns with no solutions. Gm has a transmission problem with there 4l60e transmissions. My 1998 GMC jimmy has been replaced at 19000 miles. Am very worried that this will happen at any time when not ready and an accedent will happen.

The rear rotors u-joint, carbon build up on throttle, replaced window motor uses 2 qts of oil every 400 to 500 miles , transmission uses 1 qt of oil every 20000 miles , air conditioner fan does not work on high I believe the throttle build up is a safety issue with the gas petal sticking. We have a lemon.

While driving vehicle would start to accelerate, vehicle would pull to the left or sometimes to the right. Would happen all time while driving. When the brakes were applied, they would not pull either way. Took to dealership & mechanic could not locate cause of problem. The GMC representative took vehicle for a test drive & declared it was okay to drive.

When driving at any speed, the truck surges and also accelerates without foot being on the throttle. The dealer stated that it was normal for the truck to surge, and is not able to detect a problem with the truck.

See all problems of the 1996 GMC Sierra 🔎.

Vehicle sustain high engine rpm for a few seconds after throttle release, causing quick acceleration.

Transmission does not slow vehicle down the way it should when decelerating while in gear; also, speeds to 30 mph in 3rd gear with gas pedal released.

Transmission surges at all speeds. Intermittent. Deal states could not reproduce problem. Transmission has slipped into gear while taking off from a stoplight. Rpm's went up to 2000 before engaging gear.

Vehicle will sustain high engine rpm for four seconds or more after throttle is released.

When changing gears the vehicle surges and stalls on occasion. Standard transmission. Dealer has seen twice, and says it's no solution.

See all problems of the 1998 GMC Sierra 🔎.

The transmission violently shifts into gear upon acceleration from a stop or slow speed. This problem has occurred as many as ten times since the original date of purchase. On may 4th it occured so violently that the passenger in the rear hit his head on the rear window. In this incident the shift was so hard the rear wheels left the ground(all 4) and then the truck lurched forward. This is a serious defect that could caused harm to those inside the truck and could harm other drivers or pedestrians. The truck seems to go to a neutral operation even though you are in drive then when the rpm"s icrease to above 2,000 it suddenly shifts. I have taken the truck to the dealer 5 times and recently completed arbitration to take the truck back. The GMC represenitive claimed that this was normal for a "heavy duty" transmission such as the allison. The best discription of the problem is it feels as if you have been hit from the rear by another vehicle at 15-20 mph.

The transmission has a problem that causes the truck to lurch forward just after coming to a complete stop. The lurch can be quite strong causing the vehicle to jump forward in excess of a foot. The lurch occurs at unpredictable times and without warning. The best description I can offer is that it feals as if the vehicle has been hit in the rear by another vehicle. It has occured at least 6 times on various occasions.