1. Gather Tools and Parts:
- New ignition switch (matching your vehicle)
- Socket wrench set
- Phillips head screwdriver
- Flat head screwdriver
- Flashlight
2. Disconnect the Battery:
- Open the hood of your GMC Sierra.
- Locate the battery (usually in the engine bay).
- Use a wrench to loosen and remove the negative (black) battery cable.
3. Remove the Steering Column Covers:
- Locate the plastic covers around the steering column.
- Remove any screws holding them in place.
- Carefully pry off the covers using a flat head screwdriver to release any clips.
4. Remove the Ignition Switch:
- Insert your key into the ignition switch and turn it to the "ON" position.
- This should disengage the locking mechanism of the switch.
- Use a screwdriver to press the release tab on the ignition switch (usually located on the side).
- While pressing the release tab, turn the key to the "OFF" position and pull the ignition switch out.
5. Disconnect the Wiring Harness:
- Locate the wiring harness connected to the back of the ignition switch.
- Press the locking tabs on the connectors and gently disconnect them.
6. Install the New Ignition Switch:
- Align the new ignition switch with the mounting bracket.
- Insert the ignition switch into the mounting bracket and turn the key to the "ON" position.
- This will engage the locking mechanism.
- Verify that the switch is securely seated and doesn't move excessively.
7. Reconnect the Wiring Harness:
- Reconnect the wiring harness connectors by pressing the locking tabs and plugging them back in.
8. Reinstall the Steering Column Covers:
- Reattach the steering column covers by aligning the clips and pushing them back in place.
- Replace any screws you removed earlier.
9. Reconnect the Battery:
- Reinstall the negative battery cable onto the battery terminal and tighten it with the wrench.
10. Test the Ignition Switch:
- Turn the key to the "ON" position and then back to the "OFF" position.
- Verify that the ignition switch is working properly and the engine starts and stops as expected.
Cost:
The cost of fixing the ignition switch in your 1995 GMC Sierra depends on factors such as your location and the specific model of your vehicle. If you're comfortable doing it yourself and have the necessary tools, you can save on labor costs. The new ignition switch can cost around $20 to $50, while professional labor costs may range from $50 to $200.
