Question about 1999 Chevrolet C/K 2500

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Brake Light Problem

I have a 1999 Chevy 2500 series Van. all 3 brake lights work so long as the headlights/running lights are not on. Once the headlight/running lights are on the 3rd brake light only wors and the tail lights do not.

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Hi,

Often brake lights and signal lights not working indicates a loose grounding of the rear electrical assembly. Other indicators would be dim and/or all the lights light up (but dimly) when engaging the breaks or activating any of the turn indicators. A way to verify this is to hardwire another/external grounding wire to any of the metal receptacles of the bulbs straight to a bare metal/chassis of the vehicle.

Of course the standard procedure of checking the fuses, the harness connectors and the wire harness themselves still apply.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jun 27, 2008

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