My 94 LWB air susp is going crazy. It is cold here in Mass and my suspension is acting up. sometimes the front susp. drops, then the next time the rear,then right or left side. The susp will stay up for days then takes a long time to get up to running height on other days. The pumps come on and sometimes the relief valve lets air out even though the truck isn't up to driving level. Acouple of times i'll get out of the truck susp. is fine with door open. As soon as I close the door the air susp. drops the truck right down to the bottom. Is there a height sensor or something that is causing this. Rick

 

Rick,
You need to take it to a small shop that is familiar with this system, not the dealer, let them read the codes and then get back to use with their estimate as to parts and labor.

 

Mike, the code or codes show up on the display under the passenger seat? If so I'll take a look first. Thanks Rick

 

I don't think your suspension codes will show up there, you'll need some shop with a lap top type scanner to get the job done.

 

thanks Mike Do you have any ideas what it is ?? Rick