Pontiac 2004 Grand Prix - Manual (Page 345)

6. Turn the appropriate
lamp socket a quarter
turn counterclockwise
and remove it.
7. Remove the old bulb.
8. Place the new bulb into the socket and turn the
lamp socket clockwise to install it.
9. Carefully reinstall the taillamp assembly by
reversing Steps 2 through 5.
Back-Up Lamps
The back-up lamps are located on the trunk lid.
To replace the back-up lamp bulbs, do the following:
1. Open the trunk.
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