08H3 wrote:Any ideas? I was to leave on a vacation early Thursday, but I can't drive in this weather with no heat and I'm not sure the dealer can get me in before then.
Seth wrote:I have no idea about how to solve your problem, but that would be pretty sad if your dealer couldn't fix you up by Tuesday. I usually get same day service without an appointment. Only thing that usually holds up the completion date is if they have to order a part.
f5fstop wrote:Is it not working on ALL speeds? (In the HI position, the blower motor ground circuit bypasses the blower motor resistor pack. So, if it works on HI, most likely it is the resistor pack.)
Did you check all of the fuses?
HVAC BLWR 30A Fuse 82
HVAC CNTRL HD 10A Fuse 59
RDO Fuse 10A Fuse 13 (If this one is blown the radio will not work either.)
Another suggestion, switch out the HVAC Relay (number 87) with another identical relay in the fuse panel (I believe the A/C Clutch Relay (number 76) is the same type of relay. The HVAC relay supplies the main power to the blower motor through fuse 82. To switch out a relay, just pull it straight out. MAKE SURE when swapping out relays to compare the relay part number, which is in plain sight on the top of the relay. IN ADDITION, MAKE sure you note how they go into the slots. Usually, not possible to insert incorrectly, but we all know Murphy’s Law.
You can always, disconnect the blower motor’s two pin connectors and run some jumper wires; 1 from the battery (BROWN WIRE, Terminal 2), one from ground control circuit (ORANGE, Terminal 1). This will simulate the BLOWER motor on the HI speed circuit (no resistors in the control circuit). If the blower motor now works, it is a wiring problem in either the blower motor power or ground control circuit, or a defective blower motor control module.
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