Here's a general procedure. Specifics might vary slightly depending on which door you're working on (front or rear). Consult a repair manual specific to your 1998 Oldsmobile Silhouette for precise diagrams and instructions. These manuals often show the location of hidden screws and clips.
Tools You'll Likely Need:
* Panel Removal Tools: Plastic pry tools (to avoid scratching the panel), trim removal tools, or a flat-head screwdriver wrapped in cloth or tape.
* Screwdrivers: Phillips head and possibly flathead.
* Socket Set: Might be needed depending on screw types.
* Pliers: Needle-nose pliers can be helpful.
* New Window Regulator Motor: Ensure you get the correct part for your vehicle's year and door.
* Electrical Tape (optional): For securing connections.
* Repair Manual: Highly recommended!
Procedure:
1. Remove Interior Door Handle: This usually involves removing screws hidden behind the handle cover or armrest. Your repair manual will show their location.
2. Remove Door Panel: This is the trickiest part. There are typically several screws hidden under various covers, including the armrest and sometimes under the door pull. After removing these screws, carefully pry the door panel away from the door using your plastic pry tools. Start at the bottom edge and work your way around. The panel is typically held in place by plastic clips. Be gentle to avoid breaking them.
3. Disconnect Electrical Connectors: Once the panel is loose, disconnect the wiring harness connectors for the power window switch, door lock, and courtesy light. Take pictures or note the connections before disconnecting to help with reassembly.
4. Remove the Window Regulator: After removing the door panel, you'll have access to the window regulator mechanism. This usually involves removing several screws and bolts securing the regulator to the door. The motor itself is usually part of the regulator assembly. Your repair manual will show the specific steps for this.
5. Replace the Window Motor: Once the regulator is removed, you can access and replace the faulty motor. This usually involves removing a few more screws or bolts. Again, your repair manual is crucial here. Carefully transfer any components (gears, linkages) from the old motor to the new one if necessary.
6. Reinstall the Window Regulator: Carefully reassemble the window regulator in the reverse order of disassembly.
7. Reconnect Electrical Connectors: Reconnect the electrical connectors you disconnected earlier.
8. Reinstall the Door Panel: Carefully align the door panel and reattach it to the door, making sure all the clips snap back into place. Replace the screws you removed earlier.
9. Test the Window: Reconnect the battery's negative terminal and test the window. Make sure it goes up and down smoothly.
Important Considerations:
* Hidden Clips: Be extremely careful when prying the door panel. Broken clips can make the panel fit poorly or not at all.
* Window Glass: Be cautious not to let the window glass drop or get damaged during the process. You might need to support it with something.
* Repair Manual: This is crucial. A generic guide like this is insufficient; a 1998 Oldsmobile Silhouette-specific repair manual will show you exactly where screws and clips are located and how to proceed.
If you're not comfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. Improper repair can lead to further damage.
