Mechanics

FAN SWITCH

2002 Pontiac Grand Prix

Heater problem
2002 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 100000 miles

i can only put my heat on to 5 other wise it does nothing
AD
Avatar
Msmt
January 6, 2009.




My first thought is the resistor assembly.


http://www.2carpros.com/forum/automotive_pictures/170934_pontiac_resistor_1.jpg



The blower motor and resistor assembly should be located under the passenger side of the dash.

The high speed doesn't use a resistor. You might check the fuses. One for hvac control, that circuit goes hot when you turn on the key.

Hvac high fuse is hot all the time. That one should be ok, the blower works on high, correct?

JDL
Jan 6, 2009.


AD