Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2007 Pontiac G5 owners, lightly cleaned up (personal details are redacted by NHTSA).
Tl* the contact owns a 2007 Pontiac G5. The contact stated that while driving 35 MPH, the key did not come out of the ignition and the vehicle stalled. The contact mentioned that due to the failure he was unable to stop the vehicle and crashed into a reflector, causing damage to the bumper and a tire. The vehicle was taken to the dealer, who was unable to diagnose the failure but did replace the tire. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 5,000 and the current mileage was 40,000. Updated 09/05/14 the consumer stated the vehicle hit a bump on a ramp and the vehicle stalled. The steering and brakes failed. The consumer hit what was believed to be a reflector pole, damaging the left, rear tire and the rear bumper. Updated 09/17/2014
Tl- the contact owns a 2007 Pontiac G5. The contact stated while driving approximately 20 MPH, the vehicle lost control. The vehicle crashed into a tree and the airbags deployed. There were no warning light indicators on the instrument panel. A police report was filed and there were no major injuries. The driver and the passenger was not injured. The vehicle was able to be driven to the contacts residence. The vehicle was not inspected nor diagnosed. After the accident the right rear passengers side back wheel locks up. The vehicle was not inspected nor diagnosed. The contact was included in NHTSA campaign id number: 14V047000 (air bags , electrical system) after the failure occured. The manufacturer was not notified of the failure. The approximate failure mileage was 120000. Dyd
Tl* the contact owns a 2007 Pontiac G5. The contact stated that the key would remain stuck in the ignition switch and the air bag warning light illuminated. The vehicle was taken to the dealer where it was pending repairs under NHTSA campaign numbers: 14V047000 (air bags, electrical system) and 14V171000 (electrical system). In addition, when refueling the vehicle, fuel leaked from the fuel tank. The contact mentioned that the vehicle was refueled at half a tank in order to prevent fuel leaking. The vehicle was not included in NHTSA campaign numbers: 12V459000 (fuel system, gasoline) and 09V419000 (fuel system, gasoline). The manufacturer was notified of the failures. The approximate failure mileage was 103,000. Update 01/15/16 ma updated 02/04/16.
Tl* the contact owns a 2007 Pontiac G5. While driving various speeds, the odometer and speedometer displayed incorrect readings. In addition, while driving 35 MPH, the steering wheel became very difficult to turn. The contact had to apply force to the steering wheel in order to steer the vehicle. The failure recurred on numerous occasions. The vehicle was towed to an independent mechanic who diagnosed that the computer that controlled the power steering needed to be replaced. The vehicle was not repaired. The contact was aware of NHTSA campaign number: 10V073000 (steering), but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 69,175.
After shutting off vehicle, the cooling fans would engage. They would continue to run for 15-20 mins regardless of engine temp or run time. This was the first indication that something was wrong. Shortly after that the car would not start due to lack of power from battery. I had a diagnostic check run on system that showed that most parts of the electrical system had some type of error or another. I replaced the battery due to a bad cell and re-ran diagnostic. Shows that the computer was not operating correctly which was tripping the rest of the error messages. Would this be a factory defect for the computer?
While driving on highway felt vehicle begin to lose power. Noticed that when I tried turning the steering wheel. I had lost my power steering and was unable to steer vehicle. Shortly after that engine completely shut down. Due to loss of electrical power to dash, power steering, engine, and lights. While driving down the freeway. It took everything I had to keep vehicle in traffic and coast to nearest exit. Once I stopped there was no power at all. Tow truck driver attempted to jump start vehicle, but vehicle showed no transfer of power to the vehicle. Had to have vehicle towed home.
Tl* the contact owns a 2007 Pontiac G5. While driving 35 MPH, the steering wheel seized and became difficult to turn. In addition, there was a loud noise while driving and attempting to make a turn. The vehicle was taken to an independent mechanic where it was diagnosed that the power steering module and the torque synthesizer needed to be replaced. The vehicle was not repaired. The contact mentioned that there was a manufacturer's recall related to the failure that the vehicle was serviced under in 2010. The manufacturer was made aware of the failure. The failure mileage was 125,620.
I was driving down the highway at 70mph (posted speed limit) when the RPM gauge dropped to 0 and the car lost power. I was able to ease my way onto the shoulder but with no power breaks I had to mash down the break petal finally coming to a stop. The vehicle was towed back into town and am still waiting to find out the cause of this issue. The car has less than 80,000 miles on it! I have dealt with the ignition switch recall, the timing chain has been replaced twice already, the headlights and break lights have to be changed every 3 months just about, and now this!
Tl* the contact owns a 2007 Pontiac G5. While driving approximately 25 MPH, the vehicle shut down. The vehicle was towed to a dealer where the bci and the ignition cylinder switch needed to be replaced. The vehicle was not repaired. The contact mentioned that a year prior to the failure occurring, the vehicle was serviced under a manufacturers recall for the related failure. The manufacturer was notified of the failure. The approximate failure mileage was 40,400 updated 8/21/15 updated 03/03/14.
Tl* the contact owns a 2007 Pontiac G5. When the vehicle was started, the power steering warning indicator was illuminated and the fuel gauge, oil life indicator, speedometer, and trip odometer gauges were inoperable. Additionally, the transmission seized in first gear. The vehicle was not diagnosed or repaired. The dealer and manufacturer were not notified of the failures. The approximate failure mileage was 150,000.
Related recalls
Electrical system › Ignition
General Motors LLC (GM) is recalling certain model year 2005-2010 Chevrolet Cobalt, 2006-2011 Chevrolet HHR, 2007-2010 Pontiac G5, 2006-2010 Pontiac Solstice, 2003-2007 Saturn Ion, and 2007-2010 Saturn Sky vehicles. In the affected vehicles, the key can be removed from the ignition when the ignition is not in the "Off" position.
Remedy: General Motors will notify owners, and for vehicles that were built with the defective ignition cylinder and have not previously had the ignition cylinder replaced with the redesigned part, dealers will replace the…
Electrical complaints in other G5 years
Frequently asked questions
How common are electrical problems on the 2007 Pontiac G5?
NHTSA has 31 complaints about the electrical system of the 2007 Pontiac G5, 16% of the model year's 188 complaints. The component named most often is ignition (3 mentions).
Is there a recall for 2007 Pontiac G5 electrical problems?
Yes — NHTSA recall 14V-171 (ignition, Apr 10, 2014). Recall repairs are free at authorized dealers.
At what mileage do 2007 Pontiac G5 electrical problems start?
Half of the complaints with a recorded mileage happened before about 85,000 miles, and 12% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 0 fires and 0 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.