2006 Pontiac Grand Prix: sudden loss of power

Filed Jun 17, 2019 · Acceleration, Electrical · IL

Tl* the contact owns a 2006 pontiac grand prix. While driving at highway speeds, there was a drastic reduction in speed, the reduced engine power indicator flashed, and the vehicle would not exceed 30 MPH. The vehicle was extremely difficult to maneuver when the failures occurred. The dealer was not notified. An independent mechanic diagnosed that there were 14 diagnostic trouble codes and stated that further diagnostic testing was required. The vehicle was not repaired. The manufacturer was not contacted and had not issued a recall campaign. The failure mileage was not available.

Filed May 13, 2019 · Electrical, Engine · 137,000 miles · NC

Engine shuts off in the middle of driving and says starting disabled due to electric throttle control, reduced engine power, ABS traction control off. This happens while moving at the correct speed on the highway, stopped at a stop light in the city, and while making turns. Sometimes when it happens I lose power steering and have almost o control of where my car goes. At first this only happened about once a week, but now it can happen up to 10+ times a day

Filed Apr 20, 2019 · Electrical · CO

My grandparent gave me the car a few years ago, and I lost power to all functions of headlights. I could not turn them at all, whether the car was stationary or moving. I then replaced a fuse that fixed the problem briefly. After awhile, my headlights began to stay on after I have shut the car off. During this time, my high beams were the only function that worked. Due to this ongoing problem, I have had to replace multiple batteries at least three times. I have done research and the 2007 grand prix models were recalled for this same exact issue. Ifm asking that gm extent the recall to the 2006 model year so this issue, that I have dealing with for years, can finally be resolved.

Filed Dec 9, 2016 · Acceleration, Engine · 117,000 miles · MO

While driving car shuts off "dic" states " starting disabled due to throttle control. Reduced engine power". I took it to mccarthy dealership in lees summit mo they supposedly fixed recall-key only but the recall#14350 states "dealers will install 2 key rings & an I insert in the key slot or a coner over the key head on all ignition keys" it ran ok for a while then started doing it again. Took it back 12/8/2016 & was told to do a diagnostic ck it would cost 130. Was told the recall was for the keys only not the ignition. My daughter drives this car too it stop running in the mistake of an intersection. Please help

Filed Sep 24, 2015 · Electrical, Engine · 115,000 miles · FL

Tl* the contact owns a 2006 pontiac grand prix. While driving at various speeds, the vehicle stalled and the electronic throttle and reduced engine power warning messages illuminated on the instrument panel. The contact mentioned that the vehicle started experiencing the failure after being repaired according to the federal safety agency campaign number: 14v400000 (electrical system). The failure recurred multiple times. In addition, the contact mentioned that the headlights failed to illuminate. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 115,000.

Filed Apr 21, 2015 · Engine · 182,400 miles · PA

My car began to emit white smoke and an odor of burning antifreeze. I began to lose power so I pulled over. I had my car towed to the garage and they replace my intake manifolds gaskets, which had completely been eaten away.

Filed Aug 30, 2014 · Acceleration, Electrical · 120,000 miles · CO

While driving display flashed about 4 alerts, from traction system, ABS brakes engine would shut off, and I would lose power steering. This happened around a dozen times in the span of a week. I was able to pull the car over, by using all of my strength on the steering wheel, and shut the car off, then restart it. I had to take it in to the mechanic and they had to replace the computer, and some other parts costing over $800.

Filed Jun 4, 2014 · Electrical, Steering · 111,555 miles · LA

When doing 60, my car would shut off while driving suddenly in the middle of the highway and I would lose power steering and would have to fight steering to get off the road to prevent accident. I would never know when it would happen it just did without warning. This happen multiple times until one day it wouldn't start. I called harper motors, where I bought the car in 2006 and they came and took my car to fix it in 2010. They had to replace my ignition switch and replace my computer. It cost me over 800dols. Don't know why my car wasn't put in the gm recall but it should have. I thank god that I wasn't on a major hwy. Each time this happened.

Filed Jun 4, 2014 · Electrical, Fuel system · 10,000 miles · CO

Vehicle shut down at 55 MPH while inside eisenhower tunnel colorado. Husband calmly placed automatic transmission into park and restarted car. This type of incident has happened twice again since the original incident. Prior to the first incident car lost power coming up the grade at 65 MPH. We were forced over to the side of the interstate. After waiting for a tow (which was slow to respond) approximately 20 minutes, tried the ignition and the engine turned over. Never received an adequate answer from dealer. Suspect fuel problem with altitude, or ignition problem. Incidents always seem to happen at higher (55+) speeds.

Filed Aug 8, 2013 · Acceleration, Engine · 72,000 miles · OR

Driving on the interstate going about 65 mpg when all of a sudden I lost all engine power and the engine stalled. Check engine light came on and traction control system remained on. Pulled over and shut off the engine. Restarted the engine, lights remained on and was only able to go about 15 MPH. Had to drive it very carefully about 10 miles into the next town. No shops were open at that time of night. Had to stay the night and took it into a shop the next morning. Error code said that the mass air flow sensor was bad. Replaced and drove it around for about 5 miles. Seemed to be running ok. Drove not even 60 miles and the same thing happened again. Took it into a sister repair shop and they replaced the other part of the mass air flow sensor. Was able to drive to my destination and back with no real issues. Here it is 7 months later and driving on the interstate again when the same issue happens. Check engine light came on and traction control light came on. Was able to get off the side of the road but this time. I couldn't even get it to drive 3 feet. Sat on the side of the interstate for 2 hours at night waiting for a tow truck to come get me. Got it into a shop the next morning and same issues. Needed a new mass air flow sensor. Replace and picked up but then the engine started getting really hot. Watched the transmission fluid go from 108 to 258 degrees in a matter of minutes. Pulled off the road and watched the fluid bubble out of the overflow. Got the engine to cool down a bit. Started it and drove 4 miles and the same codes came up and the engine did the same thing. Had the car towed back to the shop and was told that the computer needed to be replaced. Did that and it now surges upon start up. The super charger is not registering as being either hooked up or working now. I am being told that there are several issues that could be causing this.

Filed Jul 26, 2012 · Transmission · 85,000 miles · CA

Tl* the contact owns a 2006 pontiac grand prix gxp. The contact stated that while driving 55 MPH, the vehicle decreased speed and lost power. The vehicle was inoperable and no warning lights were illuminated. The vehicle was taken to a private mechanic who diagnosed that the failure was with the transmission, which was not suitable for the engine size. The dealer was notified who stated that in order to diagnose a test on the vehicle, the vehicle had to be towed to an authorized dealer. The manufacturer was notified of the failure who filed a case on the contact's behalf (case number: 71-1090706145). The VIN was not available. The failure and current mileage was 85,000.

Filed Feb 11, 2011 · Transmission · 64,900 miles · PA

My transmission has not failed completely as of yet, but I am experiencing a lot of problems with it.the car shudders violently during acceleration. Sometimes more severe than others. Very noticeable loss of power. Had the transmission serviced and the fluid was almost black and there was a excessive amount of metal or tcc material in the bottom of the pan. Car just reached 65,000 miles.