1997 Cadillac Deville rear air shock absorbers and upper &a

Is it in relation to what the vehicle was brought in for service, for? Or is it service recommendations after inspection? I am not certain what is meant by upper and lower bushings, is it on the rear suspension.

You would have no 'bearings' on the rear shocks, since they remain stationary. On the other hand, front struts have an upper strut bearing that allows them smooth rotation during steering. Bushings on the rear, would relate to upper and lower knuckle bushings, that is the only thing I can think they would have noticed having play. Shocks leaking is not uncommon, and you may or may not notice a difference after replacement. The loss of fluid in the shock, is replaced by air, and can create a void in absorbtion. If you are not experiencing tire wear, or noise, such as knocking or clunk, you could probably get by without replacement for now. Leaking shocks will only continue to leak, and worn bushings will continue to wear. At some time, you may get a second opinion, and see if it concurs. By this, I would not go to a shop and say that you were told your shocks were leaking and bushings have play. Have an inspection, or routine service, and see if the same recommendations are made. This would validate if a concern really exists.