Trunk light Bulb?

I took the bulb out of my 2004 GP and threw it out thinking I would just go get another one. I have checked all automotive stores and even GM dealership and no one has a bulb number listed. Can someone help me out with a bulb number?

I bought 1 package of 2 bulbs at Walmart last month. GE brand for $2. The bulb# is 912. My car is 01 GT.

#912 worked, thanks. It is strange that no books, even at the GM dealer have it listed.

Do you have an owners manual? It's strange that that bulb wouldn't be listed in there.