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This page is taken directly from our digital online manual 24066 for the 1999-2006 Chevrolet Silverado/GMC Sierra 1500, 2500, and 3500 pickup trucks (including 2007 Silverado Classics and Sierra Classics) and Chevy Avalanche, Tahoe, and Suburban, and GMC Yukon SUVs, 2WD or 4WD with gasoline engines. There is no set interval to replacing headlight bulbs, you should do it immediately upon noticing they have blown out. For safety and to avoid traffic tickets, you should make it a point to check that all your vehicles lights are working once a month, as part of your periodic inspection of tire pressure, and fluids.
Caution: Do not touch the surface of the bulb with your fingers because the oil from your skin could cause it to overheat and fail prematurely. If you accidentally touch the bulb surface, clean it with rubbing alcohol.
Headlight housing - removal
- Open the hood, swing the headlight housing retaining rods forward and pull them up (see illustration).
Note: Some models have two rods, others have only one.
Illustration 16.1 Twist the headlight housing mounting rod(s) (arrows) out of their clips and pull them straight up to disengage the housings from the vehicle
- Pull the housing forward, out of the body.
- Disconnect the electrical connectors.
- Installation is the reverse of removal.
Headlight bulb - replacement
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Remove the headlight housing as described above.
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Turn the headlight bulb holder counterclockwise and withdraw the bulb holder (see illustration).
illustration 14.2 Disconnect the electrical connector from the headlight housing and pull the bulb holder out, then replace the bulb - A is the low-beam bulb, B is the high-beam bulb
- Remove the old bulb from the bulb-holder. Handling the new bulb only with gloves or a clean rag, insert the new bulb in the holder.
Witht he headlight housing removed, you can easily access the turn signal housing below, which can also be removed by releasing one more clip (see section 17 of the Haynes manual for details)
- Installation is the reverse of the removal procedure.
