Your anti freeze collant level sensor if the same as a Chevy impala is mounted under the transmission cooling line on the radiator
it is located below thermostat on driver side.
it should be right beside the thermostat its a 2 wire sensor usually with a blue insert on it
Low coolant or a defective sensor
low antifreeze , or faulty coolant sensor .
The PCV valve is located under the MAP sensor on a 1990 Pontiac Grand Prix. The MAP sensor is in the upper plenum.
wher is location of heat sensor on 2003 grand prix 3100
The 1991 Pontiac Grand Prix oxygen sensor is located on the outside of the air filter housing. You will find the sensor on the back side of the air filter housing.
It's due to the sensor going bad. Should be in the radiator
The 1996 Pontiac Grand Prix cooling fan sensor is located on the front of the engine. The fan sensor can be found just above the thermostat.
there isn't a crankshaft position sensor on a 3.8l motor in a 1999 Pontiac grand prix according to the manual
there is no reset you have replace the low coolant sensor and flush cooling system and use dexcool coolant.
In the glove box.