2000 Pontiac Grand Prix Brake Lights Out

PONTIAC GRAND PRIX
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MIJ
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Pontiac Grand Prix, 2000 model year 127000 miles.
The stop lamps located in the two tail light modules stopped working (both at the same time). Have check the wiring, replaced each of the three element lamps, can find no faulty fuse. Any ideas?
tnx :?
Dec 29, 2006 at 6:36 AM
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WPRODRIG
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I too have the same exact problem. Same Car. (2000 Pontiac Gran Prix - mine is GT model 3.8uL V6)Just started about a week ago.
The 3rd brake light works perfectly.
The turn signal works perfectly (I believe that the turn signal and brake light share the same bulb element / wire).
When I hit the brake pedal - there is no power to the brake light.. I tracked the wiring down to the giant tube of wires going into the back seat - ground to the bulb is just fine. I was hoping that someone could tell me:

1) Do the turn signal and brake lamp share the same bulb filament?
2) where is the relay / sensor where the brake lamp gets its power from?\

I believe it has nothing to do with the brake pedal switch as the 3rd brake light works just fine.
Dec 30, 2006 at 10:38 AM
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SERVICE WRITER
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  • 9,123 POSTS
Try wiggling the hazard button and see if you get any changes. The hazard stem melts to the multifunction switch body. The hazard switch may be under recall, but the problem is likely the multifunction switch.
Dec 30, 2006 at 2:40 PM
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Suggested Repair

Wiggle the hazard button to see if the brake lights change. The hazard stem can melt into the multifunction switch body. The hazard switch may be under recall, but the likely repair is replacing the multifunction switch.

Conversation Summary

A 2000 Pontiac Grand Prix owner reported that both tail stop lamps failed at the same time after checking wiring, bulbs, and fuses. A second owner with the same car said the center brake light and turn signals still work and found no power to the brake lights at the bulbs. The expert advised wiggling the hazard button, noting the hazard stem can melt to the multifunction switch, which is the likely cause and may be under recall.

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