Check for bad relay. Comtacts in relay not opening......Kem H.
Where is heater control switch
A start would be to check this website regarding your heater switch. My mother has an impala and the cruise control green lamp would come on (cruise control was OFF) and the heater blower would only work on #5 and this was after the car operated for awhile and out of the blue I noticed it would turn on. I will be looking at swapping out the ignition switch, for a DIY and a $60 switch it beats the hrs of troubleshooting, I was told by her mechanic 3-5 hours worth with no possible solution. Also do a internet search on the above too, youu are not the only one with this issue. I hope this helps. http://www.carcomplaints.com/Chevrolet/Impala/2002/AC_heater/blower_fan_doesnt_work.shtml
AnswerBad thermostat, clogged heater core, or a defective heater control switch. If an engine has not been running long it will not have warmed up, the warmth from a car heater usually comes from the engine.
Remove the heater control switch decorative cover. Remove the retaining screws. Remove the wiring harness. Reverse the process to install the new switch.
The 1992 Acura heater control relay switch can be found beneath the passenger side dashboard. The heater control relay switch will be a few inches above the kick plate.
Low coolant? Bad thermostat? Heater core air bound, restricted, or plugged? Water pump not circulating coolant? Temperature control switch not working?
It could be the high speed heater motor relay is stuck on or the switch itself is broken.
An Inertia Switch is strictly a Ford thing, my friend. Your Impala uses a fuel pump relay that's activated by the PCM to control fuel pump output.
It adjusts the heat in the car so you can control your AC and heat to the temperature you like.
The fan relay switch is probably stuck in the on position. You could probably have this easily fixed by a mechanic for under 75 dollars.
hi
Its the bottom button by the headlight switch marked TC