Pontiac Grand Prix sudden acceleration problems

Filed Mar 1, 2021 · Acceleration, Lights · 218,000 miles · KS

My power steering went out and when you try to go over 40 the car lunges forward and has a hard time shifting and will continue while in cruise control. I already had work done on the fuel line cause the line was clogged and the vehicle would lunge forward cause the fuel wasn't getting pushed through. My power steering went out after my boyfriend parked it. He only noticed it when he tried driving away and he couldn't turn the wheel like usual. The cruise control does its thing while in motion. Also the headlamps! The brights stay on, you have to hold the dimmer switch back to get the brights to turn off but if you let go of the switch they turn on and flash people. It only turns off when turning left. The AC compressor blew too. I had bought the vehicle 3 years ago during the winter so it was blowing cold air, but when summer hit is when I noticed it was only blowing air from outside into the cab. The heater works, but the AC doesn't. My boyfriend was driving home recently and couldn't move the steering wheel and almost had a head on collision because of the power steering. The power steering happened in town at his place of work and had to drive on the highway to come home. The cruise happens on the highway. The headlamps is a constant thing, we pulled the fuse that controls the brights and the dims worked just fine, but it's hard to drive at night without brights.

Filed Jan 9, 2020 · Acceleration, Brakes · 176,194 miles · IL · crash · 1 injury

On february 8, 2019, my mother was pulling into a maintenance garage to get an oil change. Upon pulling into the garage, she was unable to stop and her vehicle lunged forward. As a result, he vehicle hit an employee, went through the maintenance garage door, through the parking lot, across a four lane street, and eventually stopped in a field across the street from the oil change venue. This is an approximate distance of 300 feet. Upon further review by my mechanic, it was discovered the ABS system was malfunctioning causing the brake pedal to drop in the car, and the car not to stop. The wiring harness also was cracked resulting in a cut to the ABS wire, causing the ABS malfunction resulting in the car to not stop, and the electrical malfunction which caused the car to speed forward. General motors was notified, but denied responsibility of this claim.

Filed Oct 5, 2016 · Acceleration, Engine · VA · fire

Tl* the contact owns a 1997 pontiac grand prix. After stopping at a stop sign from 20 MPH, the vehicle failed to accelerate when the accelerator pedal was depressed. The vehicle accelerated without warning, but then failed. In addition, when the vehicle was in park, smoke began to emit inside and outside of the vehicle. The vehicle was not diagnosed or repaired. The VIN was included in the federal safety agency campaign number: 09v116000 (engine and engine cooling). The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed Nov 13, 2014 · Steering, Transmission · 89,000 miles · VA

Tl* the contact owns a 2000 pontiac grand prix. The contact stated that while starting the vehicle, the engine rpms increased as the engine roared. The contact also stated that the vehicle surged forward and jerked. As a result, the brake pedal was depressed in order to control the vehicle. The vehicle was taken to an independent mechanic, who diagnosed that three unknown sensors from the transmission needed to be replaced. In addition, the contact stated that the steering rack and pinion became detached. The vehicle was not repaired. The manufacturer was made aware of the failures. The approximate failure mileage was 89,000.

Filed Feb 23, 2013 · Acceleration, Brakes · 23,000 miles · OH

Bought this vehicle pre certified with warranty with 22000 miles. Within 4 months the power steering line breaks replaced under warranty. Brake sensor replaced under warranty front left tie rod replaced under warranty. These are problems that occurred within a 9 month timespan. During this time you could press on the gas and the vehicle would hesitate/stall/shake and times lunge forward as you try to ease forward. This occurred the entire time I had the vehicle and they were unable to duplicate the problem when it was under the warranty. Driving home the stability/traction control sensor lights came on,them reduced engine power came on and the car would not drive over 15 miles. Now at 34000 miles and a indicator light showing they figured it was the sensor on the gas pedal ($360). Oh forgot to mention dealership also stated during that warranty timeframe unless something breaks or a indicator light comes on there is nothing they can do. After that they found I also need a front right outer tie rod ($285). Contacted gm because I think they should have paid for the gas pedal. To make a long short short it's being evaluated and since I didn't want to leave my car there another night or perhaps over the weekend until they confirmed with the sales manager reimbursement may not be possible. *tr ## VIN failed ##

Filed May 3, 2012 · Brakes · 90,000 miles · FL

Tl* the contact owns a 2004 pontiac grand prix. The contact was driving 15 MPH when a grinding noise emitted after the brakes were depressed, and the vehicle lunged forward abnormally. The contact believed the failure was caused by the ABS. The vehicle was not taken to the dealer for diagnostic testing nor was the manufacturer notified of the failure. The vehicle was not repaired. The failure mileage was 90,000 and the current mileage was 90,200. The consumer stated gm was notified about the hydraulic ABS failure. Updated 05/21/12

Filed Jan 24, 2012 · Electrical, Engine · 93,580 miles · SC

On 1/23/12, while backing out of a parking space on a level lot, my 2005 pontiac grand prix lunged forward. I immediately hit the brake. The car was in reverse not drive! I attempted to back out again and the same thing happened! The second time it lunged forward so quickly I was afraid the car would not stop, even with the brake fully applied. This second lunging incident damaged/cracked the air dam, as it was now wedged against the concrete parking space divider. At the same moment, the dashboard flashed/lit up like a christmas tree....and the engine stalled. I put the car in park and turned the ignition off..then got out to inspect the damage. Upon re-entering the car, it would not start! It finally restarted on the third attempt and I was finally able to back out of the parking space.

Filed Jul 12, 2011 · Acceleration · 75,000 miles · UT

Tl* the contact owns a 2007 pontiac grand prix. The contact was driving 25 MPH when the reduce engine power warning light illuminated and the vehicle abnormally accelerated. The contact was able to stop the unintended acceleration by applying the brakes. The vehicle was taken to a local mechanic for diagnostic testing but the failure was unable to be duplicated. The contact was concerned with the possibility of being involved in a crash. The failure mileage was 75,000.

Filed Aug 12, 2010 · Acceleration · 60,000 miles · IL · crash

Tl*the contact owns a 2002 pontiac grand prix. While parking the vehicle it accelerated on its own. The contact applied extreme force to the brakes when they did not stop the vehicle from accelerating. The vehicle crashed into a post and damaged the front end on the passenger side. The vehicle was towed to an auto repair shop. A police report was filed. There have been no diagnostic test or repairs. The failure and the current mileages were 60000.

Filed Mar 12, 2006 · Brakes · 25,011 miles · GA · crash · 1 injury

I had originally entered this complaint under 2005 pontiac grand am but the car is actually a 2005 pontiac grand prix. See original complaint and please relist it correctly under steering complaints. Thank you for your time and attention to this matter component: vehicle speed control 10051575 details: dt: the consumer experienced sudden acceleration. As a result, she crashed into her apartment. The gas meters were destroyed and electrical wires were cut. The speed was no more than 5-10 MPH. When she hit the brake the car went out of control. The vehicle was a rental car. *jb since this incident the car was checked out by the rental car company's repair shop and no defect was found. I contacted pontiac and general motors corporation and they claimed ignorance of the fact that this is happening to other similar vehicles. I have been charged $5,000 in damages by the rental car company for a car valued at $9,000 and $3,500 by the apartment complex for repair of the apartment. But I could have died from the impact when the air bag never deployed. Cause: result: occurrences: 1 injuries: 0 fail date: 07/12/2005 deaths: 0 date added to database: 7/13/2005