Here's a general procedure:
1. Safety First: Park your Blazer on a level surface, engage the parking brake, and turn off the ignition. Consider using jack stands if you need to work under the vehicle for better access.
2. Locate the Parking Light: The parking light is usually located in the front bumper or headlight assembly, near the edge of the vehicle.
3. Access the Bulb: This is the most variable step. There are several possibilities:
* Accessing from the front (most common): You might need to remove a small access panel or cover in the front bumper. This often involves unscrewing a few screws or clips. Carefully pry the panel or cover loose with a trim tool or flat-head screwdriver, being mindful not to scratch the paint.
* Accessing from the wheel well: Sometimes, you'll have easier access by removing part of the wheel liner in the front wheel well.
* Accessing from the headlight assembly: In some cases, the parking light is integrated into the headlight assembly. You may need to remove the entire headlight assembly to replace the bulb. This usually involves removing a few screws or bolts and possibly disconnecting some electrical connectors.
4. Remove the Bulb: Once you have access to the bulb socket, gently twist it counterclockwise to remove it. The bulb should come out easily. Be careful not to touch the glass part of the bulb with your bare hands; oils from your skin can shorten its lifespan. If the bulb is difficult to remove, try gently rocking it back and forth while twisting.
5. Replace the Bulb: Insert the new bulb of the correct type (check your owner's manual). Make sure it's seated correctly.
6. Reassemble: Carefully reassemble everything in the reverse order of disassembly. Make sure all the clips and screws are properly secured.
7. Test: Turn on your parking lights to verify that the new bulb is working correctly.
Important Considerations:
* Bulb Type: The exact bulb type for your 2001 Chevy Blazer will vary depending on the trim level. Consult your owner's manual or a parts store (providing your year, make, model, and trim level) to determine the correct bulb type. Common types for parking lights include 194, 168, or similar wedge-base bulbs.
* Tools: You might need a small flat-head screwdriver, a trim tool, and possibly a socket wrench or pliers.
* Pictures: Before starting, take pictures of how everything is assembled. This will help you put it back together correctly.
If you're uncomfortable working on your vehicle, it's always best to take it to a qualified mechanic. This is a relatively simple job, but improper handling could lead to damage.