2020 gmc terrain side mirror replacement

Olvin

2 min read

·

22-01-2025

1

0

Share

Replacing a side mirror on your 2020 GMC Terrain might seem daunting, but with the right tools and instructions, it's a manageable DIY project. This guide provides a step-by-step walkthrough, helping you tackle this repair confidently and save on costly professional labor. We'll cover everything from identifying the correct replacement part to completing the installation.

Identifying Your GMC Terrain Side Mirror

Before you begin, it's crucial to identify the correct replacement mirror for your 2020 GMC Terrain. Factors like heated mirrors, turn signal indicators, and power-folding capabilities will determine the specific part number you need. Your vehicle's VIN (Vehicle Identification Number) can be invaluable in confirming the precise specifications. Checking your owner's manual or using an online parts catalog with your VIN will ensure you purchase the correct replacement. Don't rely solely on the model year; subtle differences in trim levels can significantly impact mirror features.

Tools and Materials Needed

Gather these essential tools and materials before starting the replacement:

• Replacement Side Mirror: Ensure it matches your Terrain's specifications (heated, turn signals, power-folding, etc.).
• Phillips Head Screwdriver: For removing screws (sizes may vary).
• Flathead Screwdriver (small): Potentially needed to pry off plastic trim pieces.
• Panel Removal Tools (optional): These specialized tools minimize the risk of scratching your vehicle's bodywork.
• Wrench (if applicable): Some models might require a wrench to detach electrical connectors.
• Electrical Tape (optional): Secure any exposed wiring to prevent shorts.
• Shop Towels or Clean Rags: Keep your work area clean and prevent scratching.

Step-by-Step Replacement Process

Note: Consult your owner's manual for specific instructions related to your GMC Terrain's model and trim level. The following steps provide a general guideline.

1. Disconnect the Battery (Recommended): This precautionary step prevents accidental electrical shorts during the process.
2. Remove the Door Panel: Carefully remove the interior door panel. Start by removing any visible screws around the panel edges. Gently pry the panel away from the door using the flathead or panel removal tools, working your way around the edges. Be cautious not to use excessive force, as you risk breaking plastic clips.
3. Locate the Mirror Connector: You'll find the electrical connector for the mirror behind the door panel. Carefully disconnect the connector, noting how it's connected for easy reassembly.
4. Detach the Mirror: Depending on your Terrain's model, the mirror itself might be secured with screws or clips. Locate and remove these fasteners. Some models may require removing a few small clips holding the mirror assembly in place.
5. Install the New Mirror: Carefully reverse the removal process to install the new mirror. Secure all fasteners tightly.
6. Reconnect the Electrical Connector: Reconnect the mirror's electrical connector, ensuring a secure connection.
7. Reattach the Door Panel: Reattach the door panel, making sure all clips and screws are securely in place.
8. Reconnect the Battery: Reconnect the battery.

Testing and Troubleshooting

After completing the installation, test the new mirror's functionality. Verify that the heating element (if equipped) works correctly, the turn signals function properly, and the power-folding feature (if equipped) operates as expected. If any issues arise, double-check your connections and consult your owner's manual or a professional mechanic.

Saving Money and Gaining Confidence

Replacing your 2020 GMC Terrain's side mirror yourself can save you a significant amount of money compared to professional repair costs. This guide offers a practical approach, empowering you to handle the task efficiently and confidently. Remember to always prioritize safety and double-check your work at each step.