2002 Chevrolet TrailBlazer Logo
Posted on Jul 20, 2010
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How to replace headlight bulb on 2002 chevy trailblazer

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Duane Wong

Duane Wong

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  • Chevrolet Master 6,826 Answers
  • Posted on Jul 20, 2010
Duane Wong
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Joined: Jun 20, 2010
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Headlamp Removal & Installation Bulb Replacement To Remove:
CAUTION
Halogen bulbs contain pressurized gas. Mishandling a bulb may result in the bulb shattering into flying glass fragments.
CAUTION
Make sure to wear eye protection when handling a halogen bulb.
CAUTION
Do not touch the glass of a halogen bulb, only handle the bulb by the base.
CAUTION
Do not allow a halogen bulb to come into contact with dirt or moisture.
CAUTION
Make sure to dispose of a used halogen bulb properly.
CAUTION
Do not allow children to handle halogen bulbs.

  1. Turn the lamp switch to the off position.
  2. Make sure the bulb is cool before changing.
  3. Remove the headlamp assembly from the headlamp panel.
  4. Remove the rear access cover from the headlamp assembly.
  5. Disconnect the headlamp connector.
  6. Remove the bulb from the headlamp assembly by rotating the bulb and socket counterclockwise.
To Install:
  1. Connect the headlamp connector.
  2. Install the bulb into the headlamp assembly by rotating the bulb and socket clockwise.
  3. Install the rear access cover onto the headlamp assembly.
  4. Install the headlamp assembly into the headlamp panel.
Headlamp Assembly Chevrolet To Remove:
Headlamp Assembly (Chevrolet) how to replace headlight bulb on 2002 chevy - gm-06-00-1591.gif

  1. Remove the grille from the front of the vehicle.
  2. Release the headlamp assembly retaining tabs.
  3. If equipped, disconnect the headlamp leveling motor connector.
  4. Disconnect the headlamp connector.
  5. Remove the park/turn and side marker bulb sockets from the headlamp assembly.
  6. Remove the headlamp assembly from the headlamp panel.
To Install:
  1. Place the headlamp assembly into the headlamp panel.
  2. Install the park/turn and side marker bulb sockets into the headlamp assembly.
  3. Connect the headlamp connector.
  4. If equipped, connect the headlamp leveling motor connector.
  5. Lock the headlamp assembly retaining tabs.
  6. Install the grille onto the front of the vehicle.

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Jul 10, 2010 • 2002 Chevrolet TrailBlazer
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This is an unfortunate regular problem on this cars, if I am not mistaken they have a factory recall to fix this problem. It is caused by electrical problem on the wiring. Take it to the dealership see what they say. Good luck.
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Dec 29, 2009 • 2002 Chevrolet TrailBlazer
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To change a headlight bulb in the 2002 Trailblazer: I writing this with the orientation of standing in front of and facing the Trailblazer.
Open the hood.
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Pull the entire headlight assembly forward. I only moved mine an inch or two. On the back of the assembly are round rubber covers. Pull off the one covering the back end of the bulb that needs changing. reach in and turn to bulb clockwise 1/4 turn and it will slip out.
Unhook the connector from the bulb. It has a little catch on it, otherwise it just pulls out.
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As I said, the under fender clip that holds the headlight assembly on to the bracket may take some patience. It seemed to slip down OK once I had it in exactly the right position. Either that I needed to reach the required amount of cussing.
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