Here's a general guide. Consult your owner's manual or a repair manual specific to your 2007 Impala for detailed diagrams and instructions that are tailored to your exact vehicle. Pictures are invaluable in this process.
1. Locate the Blower Motor Resistor:
The blower motor resistor on a 2007 Chevy Impala is typically located behind the glove box (passenger-side compartment).
2. Access the Blower Motor Resistor:
* Remove the glove box: This usually involves releasing clips or hinges. Consult your owner's manual for the precise method. Sometimes you may only need to partially remove it.
* Locate the resistor: Once the glove box is out of the way (or partially removed), you should see the resistor. It's a small, usually black, rectangular unit with several wires connected to it. It might be attached to a metal bracket or simply held in place by the wiring harness.
3. Disconnect the Electrical Connectors:
Carefully disconnect the electrical connectors from the blower motor resistor. Take note of how they're connected so you can reconnect them correctly later. Sometimes a small tab needs to be depressed to release the connector.
4. Remove the Blower Motor Resistor:
The resistor might be held in place by screws, clips, or simply friction. Carefully remove it from its mounting location.
5. Install the New Blower Motor Resistor:
* Install the new resistor: Position the new blower motor resistor in the same location as the old one.
* Reconnect the electrical connectors: Carefully reconnect the electrical connectors to the new resistor, making sure they're securely seated.
6. Reassemble:
* Reinstall the glove box: Carefully put the glove box back in its place, ensuring all clips and hinges are properly engaged.
* Reconnect the battery: Reconnect the negative battery terminal.
7. Test the Blower Motor:
Turn on the ignition and test all blower motor speeds to ensure the new resistor is working correctly.
Important Considerations:
* Type of Resistor: Ensure you purchase the correct replacement blower motor resistor for your specific 2007 Chevy Impala model. The wrong resistor can cause damage. Use the part number from your old resistor or consult a parts store with your VIN.
* Tools: You might need screwdrivers (Phillips and possibly flathead), possibly a small pry tool to help with releasing clips, and possibly a socket set depending on how the resistor is mounted.
* Safety: Always disconnect the negative battery terminal before starting any work. Be careful not to damage any wires or other components during the process.
If you're uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. This is a relatively simple repair, but mistakes can lead to further problems.
