general problems of the 2001 GMC Sierra

Since we've had this truck, the acelerator sticks and you have to press it hard to get the vehicle to move, then it races for a second and jumps forward or reverse. This happens when it is at a complete stop, when you're starting off. It is dangerous in traffic situations, such as frequent stop & go traffic, and when you're trying to maneuver in tight spaces, such as parking. I'm sure that it also causes excess fuel consumption.

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.

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.

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.