Having problems with your 2004 Chevrolet TrailBlazer ?
How to change a headlight - 2004 Chevrolet TrailBlazer
Lift hood, at top of each headlight assembly look for two L-shaped tabs. Pull these tabs straight up, this will release the headlight assembly. Lift assembly forward to gain access to rear of assembly. There two rubber caps, the top one is for access to the low beam and the bottom for the high beam bulbs. Remove the appropriate cap, grasp bulb socket and turn CCW to release. Unplug bulb from socket by releasing catch on side of socket, install new bulb, DO NOT touch bulb glass with fingers. Reverse steps to re-assemble.
Repair Help & Product Troubleshooting for 2004 Chevrolet TrailBlazer
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