2007 Pontiac Grand Prix: sudden loss of power

9 of the 220 complaints about the 2007 Pontiac Grand Prix describe sudden loss of power.

owner complaints: 9
of this car's complaints: 4%
typical mileage: 150,000
recalls: 0

Is there a fix? 113 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2008
6
2007
9
2006
13
2005
12
2004
9
2003
1
2002
3
2001
6
2000
5
1999
9
1998
7
1997
16
1996
2
1993
2
1992
3
1991
1

What owners say

Filed Oct 24, 2024 · Electrical, Steering · 42,000 miles · FL

The contact owns a 2007 Pontiac Grand Prix. The contact stated while driving approximately 35 MPH, there was a sudden loss of power steering functionality. The contact coasted to a stop and restarted the vehicle with the ignition key. The contact stated that after restarting the vehicle, the vehicle regained power steering functionality. There were no warning lights illuminated. The contact stated that the failure occurred at various speeds. The contact referenced the federal safety agency Campaign Number: 14V400000 (Electrical System); however, the VIN was not included. The vehicle was taken to a certified mechanic to be diagnosed. The vehicle had not been repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 42,000.

Filed Jul 5, 2021 · Engine · TX

The transmission needs to be recalled its going to cause a deadly accident while in drive leaving a stop light a car nearly slammed into me from behind when light changed car had no power to go. On highway it does a sudden hard jerk with loss of power shifting into nxt gear.

Filed Oct 6, 2019 · Acceleration, Engine · 150,000 miles · OR

My "reduced engine power" light came on. Used a snap on $5000 scanner. Codes say gas pedal sensor. Changed that problem still exists. Cleaned throttle case. Car stalls and I have to press gas pedal to the floor to get it to 20 miles an hour. There are so many blogs on this problem its unbelievable. I just had the recalls fixed on the ignition and head lights. Now this issue. Please help. Im single, homeless, and unemployed. This is the last thing I need right now.

Filed Aug 7, 2019 · Electrical, Engine · 206,000 miles · MI

Tl* the contact owns a 2007 pontiac grand prix. The contact stated that the ignition would shut down while driving. The failure occurred at any speed without warning. While the contact's son was entering a freeway ramp, the vehicle decelerated and lost power. The vehicle had to be placed in neutral before the power steering seized. When the vehicle was turned off and restarted, it was able to be driven home safely. The vehicle was not diagnosed or repaired. The manufacturer and dealer were not made aware of the failure. The failure mileage was 206,000.

Filed Nov 30, 2017 · Acceleration, Electrical · 135,000 miles · KY

While driving, especially when the temp is under 40 degrees. I randomly get error with traction control off and reduced engine power. I have trouble accelerating and keeping speed. Which has been very dangerous to get to a safe spot on the expressway to pull off, when my speed suddenly changes. This has been happening for the last 3 years during the cold months and I have got items cleaned and sensors changed to no end.

Filed Jul 19, 2016 · Electrical · 135,000 miles · GA

While driving, the car suddenly loses power. "starting disabled due to electronic throttle control" message shows, then reduced power message. This happens while going full speed (interstate) stopped at redlight, reduced speed making a turn, or in park idling. First dealer said nothing wrong that they could find. Second said to replace throttle body and brake switch. Both of these were replaced and it still will stop. Called support, and all they would say is to take it for diagnostics, even though it's been done. Twice.

Filed Jul 8, 2016 · Driver assistance, Engine · 160,000 miles · MI

Tl* the contact owns a 2007 pontiac grand prix. While driving 70 MPH, the service traction system light and an engine losing power warning light illuminated. The failures occurred daily and the contact did not feel safe driving the vehicle. The failure did not occur while driving under 50 MPH. The vehicle was taken to an independent mechanic, but was not diagnosed nor repaired. The failure mileage was 160,000.

Filed Dec 12, 2015 · Engine, Steering · 170,000 miles · OK

Crank shafts position sensor causes the engine to shut off while driving down the road. Resulting in the loss of power steering, and power brakes. This occurs at all speeds from stop and go traffic at less than 5 MPH to highway speeds of 70 MPH +. This is a very dangerous issue. Adding the recall piece to the key did nothing to remedy the issue. This has been occurring for 2 years now.

Filed Nov 21, 2014 · Electrical, Steering · KS

The key had started getting stuck in the ignition, one day it just did not come out. Once the ignition tumbler was removed there was a long crack down the side of the housing which was causing the keys to loosen and so the key was not turning in sync and got stuck. The key broke off in the ignition stuck on accessory until the part came in I would have to unhook the battery every time I left my car for long periods so the battery would not drain power. One time I was driving down the highway and the cable came off because of being loosened from multiple removal. I lost all power driving at 70mph I did not panic I simply pulled over and waited for a jump start however I could see this resulting in a bad accident.