2004 Cadillac Escalade Heat and A/C Not Working Properly?
I just got back from a 60-day trip and turned on my 2004 Escalade ESV and the heat in the front did not work (i.e. no air (cold or hot) came from the front vents including front windshield). The rear vents did work properly. What is the potential problem?
If you have no blower in all speeds, don't bother checking fuses because there are 2 fuses, one fuse is for blower speed control and one is for MAX speed,(i doubt very much that you have 2 bad fuses).
I would suspect the blower motor control processor (A.K.A. resistor) very common. (right next to the blower motor)
Place blower on MAX, leave resistor plugged,
check for 12V at red wire at resistor plug ,if OK.
check for 12V purple wire,coming out of back of resistor, NOT in connector,
if OK
check ground (black wire)going to blower motor NOT in connector, if OK
replace blower motor, BUT I think you'll find No Ground out of resistor, REPLACE RESISTOR.
Hope that wasn't too confusing.
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