Tools You'll Likely Need:
* Socket set (metric): Various sizes, likely including 7mm, 8mm, 10mm, and possibly larger.
* Screwdrivers (Phillips and flathead): Various sizes.
* Pliers: Needle-nose and regular.
* Ratchet and extensions: To reach those hard-to-reach fasteners.
* New blower motor: Make sure you get the correct one for your vehicle.
* Shop towels or rags: To keep things clean.
* Possibly a trim removal tool: To avoid scratching plastic panels.
* Flashlight or work light: To see inside the dashboard.
General Steps (This is a general outline, details may vary):
1. Disconnect the Battery: This is crucial to prevent accidental short circuits. Disconnect the negative (-) terminal first.
2. Access the Blower Motor: This is usually located behind the glove box or under the dashboard on the passenger side. You may need to:
* Remove the glove box: This often involves removing screws and possibly some clips.
* Remove parts of the dashboard: This can be tricky and may require removing other components like the radio, HVAC controls, or other trim pieces. Refer to your repair manual for precise instructions on removing your dashboard's components. Take pictures as you go to help with reassembly.
3. Locate the Blower Motor: Once you have access, you should see the blower motor housing.
4. Disconnect Electrical Connections: Carefully unplug the electrical connector from the blower motor. Take a picture or note how it's connected to avoid confusion during reassembly.
5. Remove the Blower Motor: This often involves removing screws or bolts holding the blower motor housing in place. The blower motor itself might be held in by more screws or clips. You might need to carefully maneuver the motor out of the housing.
6. Install the New Blower Motor: Reverse the removal steps to install the new blower motor. Ensure all connections are secure.
7. Reconnect Electrical Connections: Carefully plug in the electrical connector.
8. Reassemble Everything: Put everything back together, making sure all screws, clips, and panels are securely fastened. Refer to your pictures if necessary.
9. Reconnect the Battery: Reconnect the positive (+) terminal.
10. Test the Blower Motor: Turn on your vehicle's AC system and test all blower speeds to ensure the new motor is working correctly.
Important Considerations:
* Repair Manual: A repair manual specific to your 1994 Chevy S-10 Blazer is invaluable. It will provide detailed diagrams and instructions that are far more accurate than a general guide like this.
* Patience: This job can be time-consuming and frustrating. Take your time, be methodical, and don't rush.
* Safety: Always disconnect the battery before starting any electrical work.
* Professional Help: If you're not comfortable working on your vehicle, consider taking it to a qualified mechanic.
This is a general outline, and the specifics of the job will vary depending on your exact vehicle. Again, a repair manual is strongly recommended. Failing to follow the correct procedure can lead to damage to your vehicle.
