That would be a very expensive part at a GM dealer. Your best source would be to go to your local auto salvage yard. Ebay is another possible source.
Probably a blown fuse or bad relay.
The fuse box diagram, for your 1995 Pontiac, can be found on the inside cover of the fuse box. The fuse box can be located in the engine compartment.
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The 1997 Pontiac brake light fuse is located in the fuse box. The brake light fuse will be labeled as the tail light fuse.
Look in your owners manual if you still have it and if you don't visit your local Pontiac parts man and he can print out what you need.
its in the fuse box located under the hood, driver side.
its actually the cigarette light fuse, it works the cigar lighter and horn,
Pontiac parts man still might have it in a book laying around in the shop.
The fuse block is located on the right side of the IP, in the right front door opening It would depend on the year. The Main Fuse block in a 93' is in the Glove Box, and the Big fuses + relays +control modules are behind the black panel below the Glove Box by the passengers feet.
It is located in the fuse panel on the drivers side of the dash. Open the drivers door to see the cover of the fuse panel.
I have one I could email to you? Added: How do I contact you so you can email me???
it is located in the fuse box under the hood on the drivers side