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Check the grounding to the bulb. It is a single bulb with two filaments. Both filaments share the same ground and if the ground is not connected to the vehicle ground you will get the kind of bulb operation that you describe. The ground wire may be damaged or the wire may not be making good connection to the chassis and you may need to clean the connector. The bulb just might not be turned in all the way. You might have a bad bulb socket. Jeep uses the same socket and bulb in all three slots (light/break light, turn light, backup light). Try switching the top socket with one of the other two (middle, bottom) and see if that fixes the problem. It did for me. Moving the middle socket to the top fixed the problem and the top socket works OK in the middle. That's because the middle (and bottom) sockets only use one of the filaments in the bulb while the top uses both. Although there is a defect in the socket that was on top, the defect doesn't bother the middle position. Try it. You might get lucky like me. FIXED!!!!!! REDBEARD, It was just as you said. I unmounted the rear light and noticed that the metal contact on the light enclosure itself wasn't flush with the plastic, where contact is to be made. Once i leveled this was working like a charm! Thank you so much. Your expertise is much appreciated. Happy Jeep GC owner.

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โˆ™ 2009-08-31 02:17:26
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Q: 1999 Jeep Grand Cherokee Limited rear driver brake light is dim when head lamps are off and brakes applied when head lamps are on brake lamp goes out but the parking light stays on why?
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Related questions

What force might pull a parked car into motion if the parking brakes are not applied?


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THE CAR NEEDS FRONT BRAKES............................

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No. If you put your foot to the brakes, it will come on. -Answed By Brain!! :))

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Parking brakes stick if left applied in cold weather

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You should use your emergence/parking brakes as a backup to your regular brakes.

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A 1998 Jeep Cherokee has disc brakes in the front.

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Only on air brake vehicles.

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A 2000 Jeep Cherokee would have rear drum brakes.

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It's used as a parking brake. Spring brakes clamp down when there is no air applied, locking up the wheels. When air is applied, they are pushed up against the springs by air pressure, releasing the brakes, and allowing the vehicle to move.

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The grand Cherokee does have four wheel disc brakes. The wrangler and Cherokee have rear drum brakes.

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The parking light stays on how am I sure the parking brakes are not on

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the brakes were applied very hard and the engine light came on and the truck just idled fast with out being able to step on the gas , idled in to parking lot shut off truck and then the truck worked and engine light went off.

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That sound it the air being aloud to escape from the air system though the quick release valve. This usally happens when the driver has applied the parking brakes. But, it can happen during other times you dont want it to.

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The driver suddenly applied the brakes.

What wheels does the parking brake effect?

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back wheels.