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BigBob, Service Manager/Technician
Category: Pontiac
Satisfied Customers: 4837
Experience:  Shop Manager with 25 years experience
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2003 bonneville: a blown fuse and replaced..heater blower motor

Customer Question

the heater blower on my 2003 bonneville quit. found a blown fuse and replaced. heater blower motor came on immediately with no key in the ignition. could not find a relay in either fuse box. could the black module box by the blower assembly with the gm parts# XXXXX have a stuck micro relay in it?
Submitted: 7 years ago.
Category: Pontiac
Expert:  BigBob replied 7 years ago.

1. Locate and disconnect the blower motor resistor assembly under the right side of the Instrument Panel Cluster (IPC). It is mounted in the duct behind the blower motor. It will have a 7 wire connector.
2. Verify only the Orange wire at pin G has voltage present at key off.
3. Verify no excessive current flow through the blower motor.
4. If OK replace the blower motor resistor assembly.

Good luck,
BigBob and 3 other Pontiac Specialists are ready to help you
Customer: replied 7 years ago.

bob just looked in the duct behind the blower motor and nothing is there. the only connector with 7 wires and 1 is orange that i can find is going into the box i mentioned in my original message. the speed control is a variable speed and not hi, med, and low.




Expert:  BigBob replied 7 years ago.
That is the right box, do the test there. There should only be voltage at the orange wire with key on engine off.


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