Tl*the contact owns a 1999 gmc sierra. While driving approximately 40 MPH, the contact depressed the brake pedal but the vehicle did not slow down; therefore, he used the emergency brake to stop the vehicle. He then noticed brake fluid on the floor of the vehicle. The vehicle was towed to a local repair shop. The contact received minor bruises due to the sudden stop. The vehicle had not been repaired at the time of the complaint. The failure and current mileages were approximately 142,000.
1999 GMC Sierra acceleration problems
39 complaints (7% of all complaints for this car). Typical mileage when it fails: 32,000. 2 crashes reported.
- owner complaints
- 39
- of this car's complaints
- 7%
- typical mileage
- 32,000
- crashes
- 2
- recalls
- 0
Which part fails
- Accelerator pedal20
- Linkages3
- Cruise control1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
GMC Sierra acceleration problems in other years
Specific symptoms reported on the 1999 GMC Sierra acceleration
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
Related investigations
Throttle sticking closed
This investigation involves the general motors corporation (gm)throttle body (tb) utilized in model year (my) 1999-2002 silverado, sierra, tahoe, suburban, avalanche and yukon (subject vehicle(s)) with 4.8l, 5.3l, and 6.0l engines. The tb valve may intermittently stick in a closed position.in such a situation, an operator may apply additional accelerator pedal force to increase engine speed.the application of additional accelerator pedal force, to open a stuck throttle valve, may open the throttle valve more than intended and, in turn, accelerate the engine and vehicle more than intended and reasonably expected by the driver.on august 1, 2002, the office of defects investigation (odi), of the federal safety agency, opened this engineering analysis.the investigation revealed that two factors may cause the defect: 1) tb manufacturing process problems; and 2) accumulation of deposits (a pcv system by-product) on or around the tb throttle valve and bore.odi concludes that the tb performs in a defective manner after analyzing gm?s data submissions, and test data collected by the vehicle research and test center (vrtc).fifty-nine crashes are alleged to have occurred as a result of gm?s tb defect.the majority of the crashes involve a single vehicle, engaging in a close quarter vehicle maneuver (or low speed), and causing only minor property damage.four out of the fifty-nine crashes involve injury, and those injuries were minor.although gm?s tb is defective, based on the evidence gathered, odi has found that the accelerator pedal force required to open a stuck throttle valve is negligible, and the throttle valve does not stick in the open position.therefore this engineering analysis (ea02-015) will be closed at this time.the closing of this investigation does not constitute a finding by the federal safety agency that a safety-related defect does not exist.for a detailed discussion of the tb component and testing, please see the attached report.
EA02015
Throttle sticking
There is no summary currently available
PE02021
What 1999 GMC Sierra owners say
Most recent owner complaints, unedited.
While on the highway with the cruise control on, the consumer tapped the brakes to cancel the cruise control, but the vehicle started to accelerate. The only way to stop the vehicle was to shut the engine off. *jb
While applying the accelerator pedal the pedal stuck, and vehicle failed to accelerate. Vehicle was taken to the dealer for inspection, and mechanic determined that the accelerator pedal needed to be oiled. *ak. This was the same excuse given by nultiple dealerships and consumer's extended warranty company. Consumer claimed had many cars and never was there a need to oil the accelerator.
Gas pedal sticks occasionally when accelerating. Driver must apply force to pedal causing truck to lunge. I am just putting today's date as the incident date, however it has been happening since I purchased the truck.
Accelerator pedal sticking when attempting to accelerate, the gas pedal sticks requiring more than average force to engage. This becomes a dangerous situation in parking lots or close quarters, such as in traffic as it may lead to a collision with nearby vehicles or woes yet, a nearby pedestrian. This condition started slowly and gradually became worse until it happens at almost every initial accelerate from start up.
I am having trouble with my throttle when attempting to accelerate from idle. It feels as though something is sticking, then suddenly releasing once enough pressure is applied to the accelerator pedal. This results in the vehicle lunging forward every time.
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
Gas pedal sticks off idle. Causes vehicle to lunge when starting out. Is most likely service bulletin 00-06-04-007a. Contacted gm, they will not pay for part because I am out of warrenty. This is a safety issue and should be a recall.
Consumer stated that at 32k miles experienced intermittent sticking of the throttle. Dealer inspected and repaired. At 50k miles the problem reocurred. Ts
Accelerator pedal sticks at idle takes great pressure to move. When it breaks free pedal goes full travel (to floor) idle to full throttle immeadiately. Very rare occurance starting 2 years ago, beginning to be very frequent when engine is cold and starting to occur even when engine is warm. Very dangerous, as pedestrians and other vehicles are at great risk of collision as vehicle accellerates rapidly. Please look at this as it appears to be a very common occurance from the auto forums I have looked at. Vr/ lcdr robert c buzzell, us navy. Dt
Questions about the 1999 GMC Sierra acceleration
Does the 1999 GMC Sierra have acceleration problems?
Owners have filed 39 complaints about the acceleration of the 1999 GMC Sierra, 7% of all its complaints.
At what mileage do 1999 GMC Sierra acceleration problems start?
The typical (median) mileage in owner complaints is 32,000 miles.
Was there a recall on the 1999 GMC Sierra acceleration?
There is no recall for this problem on this model year.
What year does the GMC Sierra have the most acceleration problems?
The GMC Sierra model years with the most acceleration complaints are 1999 (39 complaints), 2000 (27 complaints) and 1996 (12 complaints).
Other 1999 GMC Sierra problems
Brakes 338Suspension 39Transmission 37Tires 31Body 30Fuel system 26Seats 23Steering 18Visibility 18Engine 17Seat belts 15Airbags 12Electrical 12Lights 8Wheels 8Locks 3
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