For the rear...
Remove the plastic nuts that hold the carpet on(behind the tail lights) and then you can easily remove the bulbs
For the Front...
You have to remove 2 bolts (that have plastic heads that your can turn with your hand) and remove the entire headlight assembly on that side
I need to know how do i replace a haeter core on a 1994 buick park avenue?
Why is my 1994 park avenue cutting off on me
short in your turn signal switch...replace it.....check your brake lights
Replace the light bulb, if you've already tried that, then the switch is bad.
Remove headlight assembly to access bulb/socket.
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4t60e
how to replace AC compressor on a 97 Buick park Ave
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.
Best bet would a factory service manual, or Chilton or ?? I retired in 1994, sorry I can't help
Computer controlled not adjustable
No gurarantees, but most car signal flashers are plugged in at, or near the fuse box - try there.