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Where is the blower motor resistor located on a 2003 Chevy impala?
Wiki User
∙ 14y ago
Remove the trim panel under the glove box (one press in plastic stud and two plastic latches). You will see the bottom of the blower motor. The blower motor resistor is between the blower motor and the firewall. To replace it, first unplug the blower motor (connection on the firewall-side of the motor...note: press opening between leads to release wire connector). There are three screws that hold the blower motor in. They are equally spaced in the mounting ring, so one is toward the firewall. Note: mine required a Torx bit. You will probably need to remove the wiring loom retainer to get the motor out - it sticks through a bracket by the motor - squeeze the end together with a pair of needle nosed pliers, and it will pop back through the bracket. There are three hex head screws that hold the resistor in place. One is easily accessible, once the blower motor is removed. The other two are on the firewall-side of the resistor and are kind of embedded in the rubber-coated noise barrier that is under the carpet. Pull up the trim piece that covers 2/3rds of the door threshold (it just pulls up, pushes back in). Pull the carpet back toward the seat. This will expose a larger area of the black-rubber-coated noise barrier. I made a couple of short cuts in my noise barrier and pulled it away from the resistor mounting screws. Note: The mounting holes for the resistor are open-ended slots. Take out the screw that is most accessible, generously loosen the screws near the firewall. Remove the resistor, and install the new one. Start the screw that had been removed, then tighten all three screws. Test the blower motor (hook leads directly to the battery and/or check for continuity with an ohm meter) before reinstalling it - most resistor failures are due to a defective motor! A defective motor will cause the new resistor to fail (again). Install motor. Reinstall air hose to motor - it connects to ductwork by the resistor. Reinstall wire loom retainer. Start car and test run blower. Fold noise-barrier and carpet back into place. Reinstall trim panel in door threshold. Reinstall trim panel under glovebox. Go for a test drive and enjoy!
Wiki User
∙ 14y ago
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