1. Location: The blower motor resistor is usually located behind the glove box (passenger-side compartment).
2. Glove Box Removal:
* Open the glove box fully. You may need to remove any items inside.
* Locate the retaining clips or screws holding the glove box in place. These are typically at the top and sides. Consult your owner's manual or a repair manual for specifics – the design may vary slightly.
* Carefully remove the glove box. Don't force it; gently work the clips free.
3. Accessing the Blower Motor Resistor:
* Once the glove box is removed, you should see the blower motor housing. The resistor is usually attached to this housing, often with screws or clips.
* You might need a flashlight to see clearly. The resistor is a small rectangular or square-shaped component with wires connected to it. It's sometimes covered with a plastic shroud.
4. Removing the Old Resistor:
* Disconnect the electrical connectors from the old resistor. Take note of their positions for re-installation. Some connectors are easier to disconnect with a small flat-head screwdriver.
* Remove the screws or clips holding the resistor in place.
5. Installing the New Resistor:
* Carefully install the new resistor in the same position as the old one. Ensure it's securely fastened.
* Reconnect the electrical connectors. Make sure they're firmly seated.
6. Reassembly:
* Reinstall the glove box. Make sure it's properly seated and all clips or screws are secured.
* Reconnect the negative battery terminal.
7. Testing:
* Turn on the ignition and test the blower motor on all speeds. If it works correctly on all speeds, you've successfully replaced the resistor. If not, double-check all connections.
Important Considerations:
* Repair Manual: A repair manual specific to your 2003 Buick Rendezvous is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle's make and model. This guide is general and may not perfectly match your specific vehicle.
* Parts: Make sure you purchase the correct replacement blower motor resistor for your 2003 Buick Rendezvous. The part number should be on the old resistor or can be found using your vehicle's VIN number at a parts store.
* Tools: You'll likely need a screwdriver (possibly both Phillips and flathead), and possibly a small pry tool for releasing clips.
If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Working with car electrical systems can be hazardous if not done correctly.
