My car started to run hot as soon as the car was drove about a quarter of a mile, but the fluid wasn't hot. My husband replaced the thermostat, hoses, a cooling sensor, and some other things. When none of that worked, we took it to a radiator shop and they told us we need head gaskets. We have a 2001 Aztek and when we got the car in 2004, the gaskets blew but it was under warranty. That is an expensive job. GM needs to recall this vehicle and give us all some reliable cars and trucks!

- Detroit, MI, USA

2001 Pontiac Aztek I have replaced the upper and lower intake gaskets as well as thermostat at quite and expense and now the head gaskets are blown. This seems to be a very common problem with the 3.4 L from GM and it still hasn't been recalled or fixed to the consumers behalf"I have read that it was blamed on the dex-cool coolant that GM used from mid 90'5- present if that's the case why isn't GM held responsible if they know their coolant is the cause of gasket breakdown"

- Whitehall, NY, USA

Sudden acceleration occurred several times in the same day. The problem was noticed on my way to work. After putting my vehicle in park, the vehicle was still revving at 2500 rpms. Again, on my way home, I again noticed sudden acceleration. My vehicle would increase in speed on its own after releasing my foot off of the break pedal. I did not need to push the gas pedal at all. I travel an hour to work, and had to ride my brake most of the way home. After reaching my driveway, before turning the ignition off, I had my husband come and witness the issue. The vehicle again in park, was revving at 3000 RPM's. the vehicle was driven to the dealership that evening. They looked at it the next day and told us there was nothing wrong with the vehicle. They stated they completed a diagnostic check on the vehicle and it was fine. I am very concerned that if it happens again, my brakes will not hold and therefore an accident will occur.

- Winchester, VA, USA

The consumer stated she saw fluid leaking from under her vehicle in her driveway. She says she took her vehicle to the mechanic, who said it was her radiator. She then took the vehicle to somewhere else to get a second opinion, that mechanic told her that the problem was the radiator, air conditioning, and the engine intake manifold. The vehicle was leaking coolant into the intake manifold. She says her vehicle is not old enough to have this kind of problem. Front brake rotors are rusting and must be replaced.

- Saginaw, MI, USA

Engine began to leak antifreeze. I was told it was a leaking head gasket. The gasket was cracked and defective. This happened at 80,000 mi. I have the parts.

- Saginaw, MI, USA

Upon starting when engine was cold, vehicle made loud clunking from engine compartment. Engine was shut off, dealership called. We were told to drive car to dealer. Vehicle was towed to the dealership. Upon investigation engine was found to have been manufactured with the incorrect piston rod pins causing them to not be lubricated. Engine was replaced.

- Minneapolis, MN, USA