How to turn on blower fan motor without climate control module?

CORE415

MEMBER
2003 CHEVROLET VENTURE
2WD
AUTOMATIC
126,673 MILES

I'm trying to figure out a way to turn on the blower motor fan without using the climate control module. Reason for this is; the climate control module went bad (one of the connection melted) and was on defrost when it happened. I still need to use the car to get to work and back but I can't because the windshield gets too foggy. Are there wires that I can jump to force it on? If so, which ones do I need to jump and what's the best way to do it? This would be temporary until I can afford to get it fixed.

Friday, January 8th, 2021 AT 12:59 PM

1 Reply

ASEMASTER6371

MECHANIC
52,796 POSTS

Good morning,

I attached the wiring diagram for you as well as a connector diagram for you.

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

You need to go to the blower resistor next to the blower motor. Remove the connector and connect the purple wire to the orange wire and that should make the blower work.

https://www.2carpros.com/articles/how-to-check-wiring

Roy

BLOWER MOTOR RESISTOR ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE
1. Remove the right side I/P insulator.

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2. Disconnect the electrical connector from the blower motor.
3. Remove the blower motor mounting screws.
4. Remove the blower motor from the HVAC module assembly.

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5. Disconnect the electrical connector from the blower motor resistor.
6. Loosen the forward blower motor resistor mounting screws.

IMPORTANT: Only loosen both of the forward blower motor resistor mounting screws. The blower motor resistor mounting holes are slotted.

7. Remove the rearward blower motor resistor mounting screw.

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8. Remove the blower motor resistor from the HVAC module assembly.

Images (Click to make bigger)