Abs activated on dry road while stopping on a slight grade . This resulted in a loss of brakes as if a brake line failed. I shot forward about three feet then all four wheels locked up. After the accident the ABS light came on so when I got home I had my mechanic check the codes. The ABS control unit was bad but gave no indication until after the accident. The mechanic told me that this wasn't the first time he had someone with a99 - 02 gm truck in his shop with this same problem . For me this failure resulted in $5000.00 damage to my truck as well as damage to the vehicle in front of me (which luckily we also own).I just got a recall notice today almost three months after the accident for the ABS speed sensor that causes this same type of malfunction but what about the control unit on the frame rail ? In this case it also failed and costs almost $1000.00 just for the part alone before it is replaced. That's over $6000.00 by the time every thing is fixed.
1999 GMC Sierra: sudden unintended acceleration
6 of the 600 complaints about the 1999 GMC Sierra describe sudden unintended acceleration.
- owner complaints
- 6
- of this car's complaints
- 1%
- recalls
- 0
Sudden unintended acceleration by model year
- 20171
- 20131
- 20101
- 20031
- 20002
- 19996
- 19982
- 19972
- 19961
- 19942
- 19921
What owners say
The accelerator pedal had become stuck. The consumer had to pump the pedal in order for it to release, which then caused the vehicle to surge forward. *jb
While in motion, the accelerator starts to stick. Consumer has to press hard on the gas pedal to release it, causing the vehicle to lunge forward.
Accelerator pedal sticks after coming to a stop. Consumer will then apply more pressure to pedal and vehicle will surge forward. Consumer found a tsb stating that throttle body should be replaced.
When turning engine off, minutes later would try to start engine, and throttle was opened. Then, tapped on gas pedal and idle will go to one RPM. Other consumer experienced sudden acceleration. Dealer said that throttle body was deffective.
Throttle body sticks while driving. Had built up dirt and varnish. This caused vehicle to lunge forward when pressing on pedal. Drivetrain makes a clunking noise due to a lack of lubrication. This can cause teeth not to mesh correctly
Service bulletins that may apply
Related recalls
No recalls on record for this model year.
Questions about the 1999 GMC Sierra sudden acceleration
Is sudden unintended acceleration a common problem on the 1999 GMC Sierra?
6 of 600 owner complaints about the 1999 GMC Sierra (1%) mention sudden unintended acceleration. The model year with the most reports is 1999.
Is there a recall or service bulletin for this on the 1999 GMC Sierra?
There are 0 recalls and 3 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 1999 GMC Sierra
ABS 175Brake failure 54Tire blowout 14Grinding brakes 10Fuel gauge 10Knocking 8Fuel pump 6Harsh shifting 6Headlights 6Jerking 6Seat belt 6No deployment 5Wipers 5
VIN decoder
See the problems and recalls for an exact car
Buying a used 1999 GMC Sierra?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history