I'm not sure If I'm right but your bulbs might be similar to the tiny
bulb that illuminates my headlight switch. If thats the case, then the
bulbs are no longer made by GM, at least for my headlight switch light
Had to find them in a junkyard.
The bulb and socket are one piece. It just twists and locks in place.
1991 Pontiac Bonneville LE
3800 V6 ( C ), Black/Slate Grey
_~_~_~_~279, 000 miles_~_~_