Question about 2000 Jeep Grand Cherokee

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Left Tail Light not coming on

Replaced Lamp. brake light works, reverse light works, and turn signals work, but the tail light does not come on. the problem is isolated to the left tail light only

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  • snookhookerm Dec 18, 2008

    I have had to replace both D & P side entire tail light essembly twice , this will be the third time I have to replace them,what is causing this problem?

  • snookhookerm Dec 18, 2008

    The left brake light on my 2000 jeep GCL GOT SO HOT IT MELTED THE PLASTIC A LITTLE WHERE THE CONTACTS ARE .... WHY ?

  • snookhookerm Dec 18, 2008

    WHEN I TRIED TO FOX THE LEFT TAIL LIGHT IT SHORTED OUT JUST THE BRAKE LIGHTS ALL THREE , PAS. SIDE , DRIV. SIDE , AND TOP CENTER . CAN YOU HELP ME ?

  • mukaliki Dec 18, 2008

    The bulb is a double filament. I replaced it witht the factory recommended bulb, but the problem persists. Are there any other trouble shooting steps i can take without having to take my care to a shop since shops where i live up in the mountains are extremely expensive. thanks for any options

  • snookhookerm May 11, 2010

    ALL THREE BRAKE TAIL LIGHTS L,R, & TOP ALL OTHER LIGHTS BACK THERE WORK FINE. I TRIED TO FIX BY REPLACING THE BULB BUT IT DID NOT WORK. HOW CAN I FIX THIS ?

  • yadayada
    yadayada May 11, 2010

    Is there 12 volts to the socket? is the ground ok?

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Sounds like one of two possibilites, the light itself may be a double filiament meaning there is one bulb which does both tail light and brake. One of the filiaments in the bulb could be burned out, try changing the bulb. If not that, then the realy might be damaged which gives power to the tail light. It's a bit of a bigger problem to diagnose.

Posted on Dec 18, 2008

  • Greg Dec 18, 2008

    You can pull the lamp assembly out and then pull the bulb out. Look inside the socket and make sure there isn't any corrosion in the socket where the bulb seats. Put the bulb in and wiggle it around to see if there is a loose connection while someone has the brake pedal pushed. You can also try some dielectric which might help the connections if there is some corrosion build up inside the socket. I'm pretty sure it's the connection inside the bulb.



    On those cars they use the same relay for left and right taillights. So if it's just one side then I would take a look at that first.

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