Replacing the blower motor is more involved and its location varies slightly by model. Generally, it's located underneath the dashboard, behind the glove box area. Access is typically gained by removing the glove box, some under-dash panels, and possibly parts of the dashboard itself. This is a more complex job than replacing the resistor, potentially involving:
* Removing the glove box: This is usually straightforward, involving removing screws or clips.
* Removing under-dash panels: These panels provide access to the blower motor and often require removing screws and unclipping them. Be careful not to break any plastic clips.
* Disconnecting electrical connectors: Disconnect the electrical connector supplying power to the blower motor.
* Removing the blower motor housing: This often involves removing screws and potentially some other components depending on your truck's setup.
* Unbolting the blower motor: The motor itself is usually held in place by screws or bolts.
* Installing the new blower motor: Reverse the removal process.
* Reconnecting electrical connectors: Securely reconnect the electrical connector.
* Reinstalling all removed parts: Ensure all panels and the glove box are properly secured.
Before starting either job:
* Disconnect the negative battery terminal. This is crucial for safety to prevent electrical shocks.
* Consult a repair manual specific to your 1993 Chevy truck's year, make, and model. A repair manual will provide detailed instructions with diagrams and illustrations specific to your vehicle. This is highly recommended, as variations between models exist. You can find these manuals online or at auto parts stores.
Replacing the blower motor is not a beginner-level repair. If you're not comfortable working on your vehicle's electrical system and HVAC components, it's best to take it to a qualified mechanic. Improper installation can cause further damage.
