Here's a general guide, but consult your vehicle's repair manual for the most accurate and detailed instructions specific to your model. A repair manual will show diagrams and provide specific torque specifications.
General Steps:
1. Locate the Blower Motor Resistor: This is usually located behind the glove box (dashboard). You may need to partially or fully remove the glove box for access. Some Silverados may have it under the dashboard, requiring more disassembly.
2. Remove the Glove Box (if necessary): This typically involves removing screws or clips holding it in place. Refer to your repair manual for the exact procedure. Be gentle to avoid breaking any clips.
3. Locate the Blower Motor Resistor: Once the glove box is removed (or partially removed for access), you should see the resistor. It's usually a small, rectangular or square-shaped unit with several wires attached. It may be held in place by screws or clips.
4. Disconnect the Electrical Connectors: Carefully unplug the electrical connectors from the resistor. Take note of how they are connected to make reassembly easier. Some connectors may have locking tabs that need to be pressed to release them.
5. Remove the Resistor: Unscrew or unclip the resistor from its mounting location.
6. Install the New Resistor: Carefully install the new resistor, ensuring it's properly seated and secured.
7. Reconnect the Electrical Connectors: Carefully reconnect the electrical connectors, matching them to the positions noted earlier.
8. Reinstall the Glove Box (if necessary): Carefully reinstall the glove box, securing it with the screws or clips.
9. Reconnect the Battery Terminal: Reconnect the negative battery terminal.
10. Test the Blower Motor: Turn on the ignition and test all blower motor speeds. If it doesn't work correctly, double-check all connections.
Important Considerations:
* Repair Manual: Having a repair manual specific to your 2002 Chevrolet Silverado is highly recommended. It will provide diagrams, detailed steps, and torque specifications to avoid damage.
* Tools: You'll likely need a screwdriver (possibly Phillips and flathead), possibly some pliers, and potentially a socket set depending on how your glove box and resistor are secured.
* Safety: Always disconnect the negative battery terminal before beginning any electrical work.
* Part Number: Ensure you order the correct blower motor resistor for your specific Silverado model. The part number can be found in your repair manual or by searching online using your vehicle's VIN.
If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improperly installing the resistor could lead to further damage or electrical issues.
