After checking Rockauto for a 2005 GP without the supercharger, here's what I found:

Standard Replacement
ACDELCO Part # L194 More Info {#09421330, 09442445, 9421330, L124, W3W}
BULB,INSTRUMENT PANEL COMPARTMENT LP- $0.48

Extended Life

ACDELCO Part # 194LL More Info {#88929941}
BULB,INSTRUMENT PANEL COMPARTMENT LP LONGER LIFE
+ Sold in packs of 10; Price reflects cost of each individual item, not the pack- $3.01

Hope that helps.