Wiper Switch Assembly Replacement for 2017 GMC Terrain

Serial Number: GMS123456789

Introduction:

The wiper switch assembly in a 2017 GMC Terrain plays a crucial role in controlling the windshield wipers and maintaining clear visibility during inclement weather. If the wiper switch fails, it can result in impaired wiper functionality, compromising driver safety. This article provides a comprehensive guide to replacing the wiper switch assembly in a 2017 GMC Terrain, ensuring proper wiper operation.

Materials Required:

New wiper switch assembly (GM part number: 12345678)

Phillips head screwdriver

Trim removal tool (optional)

Safety Precautions:

Disconnect the negative battery terminal before beginning any electrical work.

Wear appropriate safety gear, including safety glasses and gloves.

Allow the engine to cool before working on the vehicle.

Step-by-Step Instructions:

1. Locate the Wiper Switch Assembly:

Open the driver's side door and locate the steering column.

The wiper switch assembly is typically located on the left side of the steering column, behind the steering wheel.

2. Remove the Steering Wheel Cover:

Using a Phillips head screwdriver, remove the screws securing the steering wheel cover.

Carefully pull the steering wheel cover off, exposing the steering wheel.

3. Remove the Airbag Module:

Disconnect the negative battery terminal to avoid accidental airbag deployment.

Insert a small screwdriver into the holes on the airbag module and gently pry it loose.

Disconnect the airbag connector and carefully set the airbag aside.

4. Remove the Steering Wheel:

Using a steering wheel puller, remove the steering wheel according to the manufacturer's instructions.

5. Remove the Wiper Switch Bezel:

Locate the wiper switch bezel surrounding the wiper switch.

Use a trim removal tool or a flat-head screwdriver to gently pry the bezel loose and remove it.

6. Disconnect the Wiper Switch:

Locate the electrical connector behind the wiper switch.

Press the release tab on the connector and disconnect the wiper switch from the electrical harness.

7. Remove the Wiper Switch Assembly Screws:

Remove the two Phillips head screws securing the wiper switch assembly to the steering column.

8. Replace the Wiper Switch Assembly:

Align the new wiper switch assembly with the steering column.

Insert the assembly screws and tighten them securely.

9. Reconnect the Wiper Switch:

Plug the electrical connector back into the wiper switch.

Ensure the connector is fully seated and secure.

10. Reinstall the Steering Wheel:

Place the steering wheel back on the steering column and tighten the bolts according to the manufacturer's specifications.

11. Reinstall the Airbag Module:

Connect the airbag connector to the module and carefully insert the module back into its housing.

Secure the module with the screws.

12. Reinstall the Steering Wheel Cover:

Place the steering wheel cover back on and secure it with the screws.

13. Reconnect the Battery:

Connect the negative battery terminal to complete the installation.

14. Test the Wiper Switch:

Start the vehicle and test the wiper switch to ensure it is functioning properly.

Additional Tips:

If you encounter any difficulties during the installation, refer to a qualified mechanic for assistance.

Use a torque wrench to ensure the steering wheel and airbag are tightened to the correct specifications.

Inspect the wiper blades regularly and replace them when worn to maintain optimal wiper performance.

Conclusion:

Replacing the wiper switch assembly in a 2017 GMC Terrain is a straightforward process that can be completed in approximately 60-90 minutes. By following these step-by-step instructions and taking the necessary safety precautions, you can ensure the proper functionality of your vehicle's windshield wipers, maximizing visibility and driving safety.