How do I fix the self leveling shocks in my olds bravada

air shocks were a option normal shocks can be bought.

The first thing to do is establish the condition of the compressor. Using jumper wires, connect the compressor to direct battery voltage. Make sure you don't have a blown fuse. If the compressor works with direct voltage, then the problem lies elsewhere. Make sure all the air lines are connected and in good shape. Check to see if the level sensor under the rear of the vehicle is getting vovltage. If your compressor doesn't come on when you apply direct voltage, then it will have to be replaced. Shop around for the best deal on a new compressor. The dealership will charge you a tremendous markup.

ur berings are bad -take them out and buy new ones--also inspect ball joints and shocks

A strut is a device that integrates shock and spring into one unit - there is no separate spring. Like certain shocks, some struts are load leveling which incorporates bladders into the shock part that are inflated by an air compressor.
You must use a strut to replace a strut; however, there are usually available regular struts that can be used to replace load leveling struts if that's what you want. To determine if there is a strut like that available for your vehicle, try visiting the Monroe website.

Pump on air suspension has probably failed. About a $400 fix at dealer.

If it's off now nothing, pick up a bad signal from one of your engine sensor but fix it self, if it comes back on and stays on have computer diag. done and get back with us and will see how we can help you.

1996 bravada no reverse forward does fine

It could be the sensor or the wire harness it self where it connect's the the sensor. There is just one lead wire and it may be damaged due to corrosion or a broken wire. Check the wire first before replacing the sensor, remember the Bravada is 15 years old. Good luck friend and keep me posted, be glad to know you got your Olds running 100% again. 

The load leveling shock will not work if there is an issue with the compressor. If you buy the sir shock's, your going to have to address the compressor issue to even have the air shocks level the Silhouette. Once you have the compressor issue addressed, the shocks it's self is simple enough to replace that you can do it with common tools to save you some money. My wife has a Montana and we had the same problem, since we do not tow and really never hold that much weight. We replaced the rear shocks with Monroe Reflex Shocks, Found the van to be much more sturdy then the air shocks ever were and the good thing about them is there were lift time replacement at Parts Source. Regardless on which shocks your going to use, it's a good rule to replace both sides at the same time. The only difference in to reinstalling the air shocks is you need to reattach the air lines to the shocks and that's simple as removing the shocks it self. The shocks are only held on by two bolts,  one on top and one on bottom and should only take about 20 min each side to do since you have to jack the car up and remove the wheel for room, but you can remove the shocks it self without removing the wheel, it's your preference. Good luck and keep me posted, be glad to answer any questions you may have. 

Yes it's the shocks. They have an average life of 80,000 miles so replace them with life time replacement at Parts Source and don't buy the cheap ones, they don't work well and since there life time replacement parts. Spend a little more for the good ones, just keep the receipt in the glove box in your manuel. Good luck and hope this helps. you can change the shocks your self with common tolls.