Tools You'll Likely Need:
* Socket set (metric)
* Screwdrivers (Phillips and flathead)
* Pliers
* Trim removal tools (plastic pry tools are best to avoid scratching)
* Possibly a small ratchet with extensions
* New blower motor (ensure it's the correct part number for your vehicle)
* Shop rags or paper towels
Steps (General Outline - Consult your repair manual for specifics):
1. Disconnect the Battery: This is crucial to prevent electrical shocks and short circuits. Disconnect the negative (-) terminal first.
2. Access the Blower Motor: This is the most variable part. The blower motor is usually located behind the glove box or under the dashboard on the passenger side. You'll likely need to:
* Remove the glove box: This usually involves removing screws and possibly some clips.
* Remove various trim panels: This may involve removing the lower dash panel, parts of the console, or other trim pieces. Be careful not to break any clips. Use trim removal tools to help avoid damage.
* Possibly remove the passenger-side knee bolster (if applicable): Some models require this additional step to gain sufficient access.
3. Disconnect Electrical Connectors: Once you have access to the blower motor, carefully disconnect the electrical connectors. Take pictures or make notes to ensure you reconnect them correctly.
4. Remove the Blower Motor Housing: This housing usually holds the blower motor in place. It might involve removing screws or clips. Again, your repair manual will provide the precise method.
5. Remove the Blower Motor: Once the housing is removed, you should be able to access the blower motor itself. It might be held in place by screws or a retaining clip.
6. Install the New Blower Motor: Carefully install the new blower motor, ensuring it's seated correctly.
7. Reassemble Everything: Reverse the steps above to reassemble the blower motor housing, trim panels, and glove box. Double-check that all screws and clips are secured.
8. Reconnect the Electrical Connectors: Reconnect the electrical connectors, ensuring they are securely fastened.
9. Reconnect the Battery: Reconnect the battery's negative (-) terminal.
10. Test the Blower Motor: Turn on your vehicle's HVAC system and test the blower motor on all speeds.
Important Considerations:
* Repair Manual: This is not a substitute for a proper repair manual. A Chilton's or Haynes manual specific to your 1996 Cadillac DeVille will provide detailed illustrations and step-by-step instructions.
* Safety: Disconnect the battery before starting any electrical work.
* Patience: This is a time-consuming job. Be patient and take your time to avoid damaging anything.
* Clips and Fasteners: Be very careful with plastic clips and fasteners; they break easily.
* Pictures: Take pictures throughout the process to help you remember how everything goes back together.
If you're not comfortable performing this repair yourself, it's best to take your car to a qualified mechanic. Replacing the blower motor incorrectly can lead to further damage or safety hazards.
