The 2001 Buick LeSabre rear shocks are held in place with a retaining bolt on each end of the shock. Remove the retaining bolts and the old shocks will come off. Reverse the process to install your new rear shocks.
Follow the instructions that come with the shocks.
I believe that the rear air shocks are part of an automatic level control system. There is a level sensor on the rear suspension system and a compressor that fills the shocks to raise the rear end. There is also a valve to release the pressure to lower the rear end.
Rear air shocks work by using a small air compressor to provide additional lift and support. This is particularly handy for towing heavy loads.
Struts in the front and air shocks in the rear.
A few years ago I traded in my worn our air suspension for a rear conversion kit from a place called Strutmasters.com they were very helpful and there kit fixed all the problems I was having with my rear end sagging. The kit also came with instructions on how to disable and install everything. I added the link to the part I got below. http://www.strutmasters.com/Cadillac-Deville-Air-Suspension-Rear-Conversion-p/-cad-r4ns-mnt-d.htm I hope I was of some help
Easy: 1) Disconnect the air hose clips. 2) Unbolt the bottoms of the shocks. 3) Unbolt the tops of the shocks 4) Install new shocks 5) When installing the hoses to the new shocks, make sure the seals are clean and lubricate them lightly with a little silicone. Now, replacing the pressure hoses, that is a much harder job.
They have air shocks in the back that are used for ride height control. This is not the same as an "air spring" system. They have regular rear springs and the air bladders in the shock are only pumped up when there is significant load in the rear, to prevent the rear end from sagging. This is a very simple and reliable system. Monroe makes great factory replacement rear air shocks and they are cheap too.
You can find a good tutorial at http://airsuspensionreviews.com
Lesabres only have air suspension in the rear, they will be a combination of air shocks with a coil spring on the lower control arm.
Yes they can.
the rear shocks on the newer Envoys are air shocks, and wear just like the other ones, however there is also a compressor in the system that is prone to failure.