actually there is a panel in the trunk 02 monte under the rug near the back seat
It's inside the gas tank.
Check coolant level in recovery tank Perhaps a bad sensor. Sensor located in coolant recovery tank
The low coolant sensor is bad or disconnected.
It is either on the radiator passanger side half way down or in the recovery tank.If it is shot you half to replace it around 50.00 bucks Auto Zone.Mine was not working and I ended up pulling the wires of it but keep an eye on the fluid level.
Check your coolant level...
Maybe low coolant level
No, you have to replace the complete tank which includes the sensor.
One reason a 2004 Monte Carlo heater motor blower may not work is low coolant. You can check the coolant level after the car has been turned off.
the tranny itself is the reservoir, check the level on the tranny dipstick to see that it is full.
It is in the passenger side coolant tank on the radiator. If the light is on and the coolant is at the proper level then the sensor is defective. To replace it you will have to drain the radiator. Disconnect the wire and remove the clip and remove the sensor.
The sensor screws into the side of the oil pan. You will need to drain the oil and then replace the sensor.
A couple of cars had two words starting with S in their names. The first is the Saab Sonett, which was made from 66-74. Also Chevrolet had a trim level of the Monte Carlo called the SS for Super Sport which had a larger engine than the basic Monte Carlo.