Many home DIY type individuals replace the headlight bulb themselves but of course, if in doubt, be sure to take your vehicle to a professional.
The headlight assembly is held in place with two pins that, when pulled out, allow access to the headlight bulbs.
Headlight Bulb Types 1999-2006 GMC Sierra
- 9005 High beam
- 9006 Low beam
A 1999-2006 GMC Sierra has two headlight bulbs, one for high beams and one for low beams.
The high beam bulb is a type 9005, and the low beam bulb is a type 9006.
Example 9006 Bulb on Amazon
Philips Automotive Lighting 9006 Standard Halogen Replacement Headlight Bulb, 2 Pack (9006B2)
Example 9005 Bulb on Amazon
Sylvania 9005.BP 9005 Basic Halogen Headlight Bulb, (Contains 1 Bulb)
How to Replace Headlight Bulbs 1999-2006 GMC Sierra
- Open the hood and remove the two pins that hold the headlight assembly in place.
- Remove the headlight assembly.
- Unplug the wiring harness.
- Twist the headlight bulb counter clockwise to remove it.
- Insert the new headlight bulb.
Replacing the headlight bulbs on a 1999-2006 GMC Sierra is an easy task that many DIY people do.
Of course, if you are unsure, be sure to take your GMC to a mechanic or other professional.
Often many auto parts stores employees will replace the bulb fr free of charge but be sure to call around first to see if a store does or not.
The first step is to order a new bulb to replace the bad one.
The high beam bulb type is a 9005, and the low beam bulb is a 9006 bulb type.
When replacing the bulbs, two pins hold the headlight assembly in place and need to be removed.
Once the pins are removed, the headlight assembly will come out, and the bulbs can be replaced.
Have you had any issues replacing the headlight bulbs on a 1999-2006 GMC Sierra? Let us know your thoughts below.