1. Accessing the Blower Motor:
* Remove the passenger-side footwell trim panel: This usually involves removing screws and possibly some clips. You might need trim removal tools to avoid damaging the plastic. Consult a repair manual or online video specific to your vehicle for precise locations.
* Remove the glove box: This often involves removing screws and possibly hinges. Again, a repair manual or online video is your best friend here. This provides better access to the blower motor housing.
2. Disconnecting the Blower Motor:
* Disconnect the electrical connector: This is the connector supplying power to the blower motor. It usually has a locking mechanism; gently push and pull while disconnecting. Take a picture or note the connector's orientation for easier reassembly.
* Disconnect the blower motor resistor (if applicable): This is a separate electrical component that controls blower speeds. It might be integrated into the blower motor assembly or housed nearby.
* Remove any retaining screws or clips: The blower motor housing is usually secured with screws or clips. Carefully remove these. Some housings might have a retaining ring.
3. Removing the Blower Motor:
* Access the blower motor itself: This usually involves removing part of the HVAC system's housing. The blower motor might sit deep within the housing and require some maneuvering.
* Remove the blower motor: Depending on its design, this might involve pulling straight out or rotating it to dislodge it from its housing. Again, a repair manual will be essential to understanding the specifics of your vehicle's design.
4. Reassembly:
Reassembly is simply the reverse of the removal process. Make sure to properly secure all the screws and clips.
Important Considerations:
* Repair Manual: A repair manual specific to your 2003 Chevy Trailblazer EXT is highly recommended. This will provide detailed diagrams and instructions tailored to your vehicle. Online resources like Haynes or Chilton offer these manuals. YouTube videos can also be helpful but use caution and always cross-reference with a reputable repair manual.
* Tools: You'll need screwdrivers (likely Phillips and possibly flathead), possibly trim removal tools, and possibly a socket set.
* Patience: This is not a quick job, and accessing the blower motor often involves working in tight spaces. Take your time and be methodical.
* Safety: Always disconnect the negative battery terminal before starting any work.
This is a general guide. Consult a repair manual for specific instructions and diagrams relating to your vehicle. If you're not comfortable working on your vehicle yourself, it's best to take it to a qualified mechanic.
