1. Locate the Blower Motor Resistor:
* Most common location: The resistor is usually located behind the glove box (passenger-side compartment). It's often a small, rectangular black plastic box with wires connected to it. Sometimes it's clipped to the HVAC housing, and sometimes it's just tucked in there.
* Less common locations (though rare in a '97 S10): Some models may have it under the dash, near the blower motor itself.
2. Prepare for Removal:
* Disconnect the battery's negative terminal. This is crucial to prevent accidental short circuits.
* Remove the glove box. This usually involves removing screws or clips holding it in place. Consult your owner's manual or a repair manual specific to your year and model for detailed instructions. You may need to carefully maneuver around various wires and components during glovebox removal.
3. Access and Remove the Resistor:
* Once the glove box is out, you should have clear access to the blower motor resistor. You might see it immediately, or you might need to carefully maneuver some components to see it better.
* Unplug the electrical connector(s). These usually just push in, so gently push and pull them.
* Remove any retaining clips or screws holding the resistor in place.
4. Install the New Resistor:
* Carefully install the new resistor. Make sure it's oriented correctly, matching the old one.
* Reconnect the electrical connector(s). Make sure they're securely attached.
* Reattach any retaining clips or screws.
5. Reassemble:
* Put the glove box back in place. Ensure it's securely fastened.
* Reconnect the battery's negative terminal.
Important Considerations:
* Repair Manual: A repair manual specific to your 1997 Chevy S10 is highly recommended. It will provide detailed diagrams, instructions, and torque specifications. This is particularly useful for glove box removal.
* Photography: Before disconnecting anything, take pictures. This will help you remember how everything was connected during reassembly.
* Part Number: Ensure you buy the correct replacement blower motor resistor for your specific vehicle. The part number from your old resistor or a search using your VIN on a parts website will ensure you get the correct component.
* Testing (Optional): After reassembly, test the blower motor speeds to ensure the new resistor is functioning correctly.
If you're not comfortable working on your vehicle, it's best to take it to a qualified mechanic. Improper installation could lead to further damage or electrical problems.
