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How to put in a headlight on a 2003 Chevy Trailblazer

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Hello,
Please follow the stepwise solution carefully.
1.Open the hood and disconnect the truck's negative battery cable.
2.
Remove the grille. Unbolt and remove the plastic panel over the radiator, then use a flat screwdriver to release the clips securing the grille at the bottom to the headlight panel and lift the grill off.

3.
Pull up the retaining tabs for the headlight housing, which are on opposite ends, and carefully pull the housing out. Remove the park/turn signal bulb socket from the housing by detaching the holders and electrical connectors and disconnect the side marker socket.

4.
Take off the circular access cover from the rear of the headlight housing. Twist the bulb in a counterclockwise direction, withdraw the bulb with its electrical connector from the housing and disconnect the electrical connector.

5.
Hold the new bulb by the holder--do not touch the glass--as you connect the electrical connector. Place the bulb in the housing and twist it clockwise to lock it in place. Close the access cover.

6.
Install the headlight housing into the panel, connecting the electrical connectors, signal bulb socket and side marker socket. Push the retaining tabs in place.

7.Reinstall the grille and plastic radiator panel and reconnect the negative battery cable.

Problem solved.


Take care.

Posted on Aug 06, 2010

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