Fans on 1999 pontiac grand am will not come on. Have checked fuses and they are fine. No wires seem to be cut or lose. help please.

It is called 'HVAC Blower (Climate Control)'. and is fuse 13.

Pontiac Grand Am (1999-2005) fuses and relays

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Here you will find fuse box diagrams of Pontiac Grand Am 1999, 2000, 2001, 2002, 2003, 2004 and 2005, get information about the location of the fuse panels ...

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Thermostat is stuck closed or your electric fan is not cutting on.I would replace the thermostat first and if it still overheats then the coolant temperature sensor is more than likely why the fan is not cutting on.

With the Key in the RUN position, check for battery voltage on the brown wire in connector 2 terminal H at the DRL module. Also check for battery voltage on the pink wire terminal C of the same connector. if you see battery voltage, then the IGN switch and the two fuses supplying power to the DRL are working fine.

Next, check the brown wire in connector 1 terminal H at the DRL module for battery voltage

if the fan doesnt blow and thats the problem you're talking about check your owners manual to see which fuse runs the fan if it's good chances are the blower motor is out and will need to be replaced

check to see if the fan is not frozen up...if not then check temp fan switch on engine should be by top radiator hose or top of radiator

ok well start by checking ALL the fuses then all the relays and also make sure that fans are good by jumpin a wire from battery to test fan motors its a start

would it be the mass air flow sensor?

Hi

I would start with the dimmer switch if you know the lights are good dimmer switches do this you will lose your high beam or you will lose your low beam when they go bad.

The Blower motor (heater fan) is under the dash on the passenger side of the car. there is a panel that has to be removed to get at the fan and can be removed with a small pry bar and patience. before the fan gets removed, check the fuses first, also check the motor by disconnecting the wires going to it and putting power directly to it (this will take some small wires to do). By doing all of this, you will determine if the blower motor is actually the problem. if the fan works when it has direct power, then the problem is someplace else.