07'pontiac grandprix overheating low cabin heat
my car is overheating and has somtimes low or no heat , I have replaced water pump , thermostat , radiator I have flushed cooling system car does not over heat all the time heat works sometimes I am Puzzled I am thinking maybe head gaskets or cracked head anyone ever had this problem and fixed it ? if so what was it thast was causing it
If you suspect a head gasket there is a test kit for about 40 bucks. There are good YouTube videos on how to do it. Scottykilmer.com has a good one. If you don't want to do it yourself, a lot of shops have a sniffer that they can use to see if there are combustion gasses in the radiator.
Sounds like you have air in the cooling system. Try bleeding it. HTH. -Jim
Could be the heater core, check for leakage inside and outside the car.
Looking for a Used Grand Prix in your area?
CarGurus has 3,751 nationwide Grand Prix listings starting at $1,995.
Search Pontiac Grand Prix Questions
Pontiac Grand Prix Experts