I just bought a 2000 expy 2x4 and the drivers side sags in the rear. I've replaced the air bag soaped the lines and still it will not come up. The compressor comes on it raises up but does not level out!! Can the dealer adjust the height thru the computer??? Or can I let the air out of both bags and reset the computer to see if it adjust itself???

 

There is only one height sensor for the rear and it controls both sides. So by adjusting the height through the computer you will not solve the unbalanced issue. Could it be that the right side is pumped up too high and the left is just fine?

 

That could possibly be the problem but it seems that the left airbag doesn't get as hard as the right. How would I let all the air out of the bags and reset it to see if it levels out???

 

I would just disconnect the connector to the compressor or the compressor relay and wait for it to lower. If you find the front and left sides are going down and the right rear is not, then the air release solenoid on that air shock is probably not working.

 

Alloro it only has rear air shocks. As soon as I get off work I will try disconnecting the compressor and be patient and watch to see what happens. And then I'll post pictures of what is going on.

 

Alloro another thing is that my compressor sounds like a Harley Davidson

 

The factory air suspension controls front and rear. Are you saying the fronts have been changed out to non-air units?

 

The rubber mounting feet (isolators) get destroyed and cause the compressor to make all sorts of noise. What's the condition of yours?

 

As soon as I'm off work I will post pics of my expy I get off work at 4:30 Arizona time. And I believe it only has air ride in the rear.