Not having done this on my 98 Sable (yet!), I took a look at the Autozone.com repair guide for replacing rear struts - see link in the below section titled "Related links".
NOTE: Autozone now requires free registration to access the repair guides. More than worth the extra effort for these photo/illustrated instructions.
It doesn't appear that the seat has to come out - just remove the plastic trim piece to get at the top strut mounting bolts.
If you do replace yours, it will be helpful to others if you add to this answer any tips and tricks you may discover from the experience.
Really easy, remove all the top bolts in engine compartment ,then disconnect bottom of strut. Now jack vehicle up and let the strut slide out.
Compress the strut spring with a spring compressor. Remove the retaining bolts from the top and bottom of the strut. Remove the strut assembly. Reverse the process to install the new strut.
1986-1994 models # Loosen but dont remove the upper mount-to-shock tower nuts # Raise and support car # Remove the wheel and tire assembly # Remove the brake flex line-to-strut bolt # Remove the strut-to-knuckle pinch bolts # Using a suitable tool spread knuckle-to-strut pinch joint slightly # Using a suitable prybar place top of bar under fender apron and pry down on knuckle unil strut separates from knuckle be careful not to pinch the brake hose
The bottom strut mount is connected to the frame by two retaining bolts. Remove the retaining bolts to remove the strut mount. Reverse the process to install the new strut mount.
This is a strut suspension. You have to remove the complete strut. Then you will need a spring compressor to release the coil spring. From there the shock can be changed. It would be cheaper to take the car to someone and have it done as the tool's needed will cost you.
To change the front strut it is not hard at all. Simply remove the tire, remove the break, remove the bottom bolts from the strut. Then remove the top bolt from the strut. Usually takes about 20-40 minutes to remove. Replacing is very simple as well. However, the front strut replacement will require a front-end alignment to be completed.
Compress the shock spring with a spring compressor. Remove the top strut bolt. Remove the bottom strut bolt. Reverse the process to install the new struts.
First, open the hood. Now remove the brake line support so that you can begin to get to the strut. Remove the pinch bolt that holds the strut at the bottom. Drop the sway bar that is connected to the strut. Now remove the bolts the interior bolts that support the strut. Remove the old strut and replace it with the new one.
remove the 22mm bolt at the top that holds the strut to the car DO NOT REMOVE THE 19MM NUT ON THE STRUT ITSELF UNLESS YOU HAVE USED A SPRING COMPRESSOR TO RELIEVE TENSION OF THE SPRING
It's the upper strut bushings. It probably will gwt worse when it's cold.
Use a strut spring compressor to compress the old spring, the remove the strut from the spring. Use the compressor to put the strut into the new spring. Install the strut and spring into the vehicle.
You will need to compress the 2002 Pontiac Grand Am strut spring with a spring compressor. Remove the top and bottom strut retaining bolts. Reverse the process to install the new strut.