If it's dim or gone then it's a bulb that's dying. Someone over at ClubGP did a writeup on this, it's an old link but it worked when I logged into the forum so I hope it works for you.
ClubGP Message Forum troubleshooting
You need to get Sylvania #24 bulbs from any auto store (I paid about $5 for a pack of two), take apart the DIC, gently unscrew the blue bulb retainer, then you basically have to break off the old bulb from the blue retainer before replacing with the new bulb. I did the replacement this week with no problems.
Im looking at a cost of around $234 for a new DIC
16151234 is the part number. Dealer only item and cost 4.80ea. Dealer requires you to buy 2 at a time. They have to order them but still the price for replacement bulb and socket out weighs a new DIC. Thanks for those part numbers.Are there clips in those bulbs in 2000 grand prix models which dont permit you to pull the bulb out of the blue retaining socket? It looks like a #24 bulb but there is no way to pull the bulb out without breaking it. I tried everything. The part number for the bulb and the socket is 16151234 or PC119 and I cannot find them at any auto parts store so right now Im looking at a cost of around $234 for a new DIC