There is no such thing as air conditioning codes.
Pull the bulb...
The PCV valve on a 1995 Buick Park Avenue is located on the top of the valve cover. Twist the valve and pull to remove and replace it.
In a 1987 Park Avenue the fuse panel is located under the dash panel where the headlight switch is. There are two finger screws on the left side of the dash by the door, turn these left to release, then pull the panel off. I am not wholly certain, but in the 1992 Park Avenue I have it is located on the left side abouta foot in from the door. There are also other fuses located on the RIGHT side of the dash under the sound insulator.
Pull the fuse or fuel pump relay.
1999 buick park avenue cuts off while driveing during excelleration and dash board goes black, rpms dont work when driveing it while driveing it after it dies,if i pull over and restart it dash board comes back on and rpm gauge works,untill it cuts off again
It's easy once you pull the engine out a little.
motor is out or you have a fuse blown
It is in the intake behind the throtle body. Simply pull it out and replace it.
if you have that manual go to the fuse box section, see what fuse it is and pull it out.
simply grab under the front where it meets the carpet and pull upward
undo the 2 star screws on the top of each of the lamps. then pull straight out