Tools and Materials Needed:
- New tow mirrors (driver and passenger side)
- Phillips-head screwdriver
- Flat-head screwdriver or trim removal tool
- 7mm socket wrench
- 10mm socket wrench
- Extension for the socket wrench
- Masking tape
- Clean cloth
- Isopropyl alcohol
Instructions:
1. Disconnect the Battery:
- Start by disconnecting the negative terminal of your vehicle's battery to prevent any electrical accidents during the process.
2. Remove the Door Panel:
- Use a Phillips-head screwdriver to remove the screws holding the door panel in place.
- After removing the screws, use a flat-head screwdriver or trim removal tool to carefully pry the door panel off, starting from one corner.
- Be careful not to damage the door panel clips.
3. Locate the Mirror Mounting Bolts:
- With the door panel removed, you'll be able to see the mirror mounting bolts inside the door.
4. Disconnect Electrical Connections:
- Disconnect any electrical connectors attached to the mirror housing, including the power connector and turn signal connector (if applicable).
- Take note of the wiring positions for later reconnection.
5. Remove the Mirror Cover:
- Use a 7mm socket wrench to remove the bolts holding the mirror cover in place.
- Once the bolts are removed, gently pry the mirror cover off, starting from one corner.
6. Remove the Mirror Motor Housing:
- Use a 10mm socket wrench with an extension to remove the bolts holding the mirror motor housing to the door.
- Carefully remove the mirror motor housing from the door.
7. Disconnect the Mirror Motor Plug:
- Disconnect the electrical plug connected to the mirror motor.
8. Remove the Old Tow Mirror:
- With the mirror motor and cover removed, you can now access the bolts holding the old tow mirror in place.
- Use a 10mm socket wrench with an extension to remove these bolts.
- Once the bolts are removed, carefully remove the old tow mirror from the vehicle.
9. Connect the New Tow Mirror Motor:
- Connect the electrical plug to the new tow mirror motor.
10. Install the New Tow Mirror:
- Position the new tow mirror in place and secure it with the removed bolts.
- Tighten the bolts using a 10mm socket wrench with an extension.
11. Reinstall the Mirror Motor Housing:
- Reinstall the mirror motor housing by aligning it properly and securing it with the bolts removed earlier.
12. Reinstall the Mirror Cover:
- Align the mirror cover with the mirror base and secure it with the removed bolts.
- Tighten the bolts using a 7mm socket wrench.
13. Reconnect Electrical Connections:
- Reconnect the power and turn signal connectors (if applicable) that you disconnected earlier.
- Ensure that the connections are secure.
14. Reinstall the Door Panel:
- Carefully align the door panel with the door frame and its clips.
- Press firmly to snap the panel back in place.
- Reinstall the screws you removed earlier to secure the door panel.
15. Test the Mirrors:
- Reconnect the negative battery terminal.
- Test the tow mirrors by adjusting them, using the power controls, and checking their movement.
16. Clean Up:
- Use a clean cloth and isopropyl alcohol to remove any fingerprints or smudges from the new tow mirrors.
Remember that this guide provides general instructions, and the specific steps might vary depending on the exact model and trim of your 2010 GMC Sierra. If you're unfamiliar with vehicle modifications or encounter any difficulties during the process, it's always best to consult a professional or refer to the vehicle's service manual for model-specific instructions.
