Problem with rear air suspension 2002 GMC ENVOY?

[Ariel G]

My truck's rear drops overnight, especially when it's real humid. Any idea what this could be? Any other time it's just fine, and on the days where it does drop, it inflates back up to normal ride height once I turn it on and start driving?

Any help would be appreciated.

 

[pedro7of9]

theres a leak...when you start it the air pump brings it back up....sorry to say the more time goes on the more things go wrong and cost to fix...my trucks has no "air" syspension...maybe not so cool or smooth but i will not see you at the dealer for the 500/1000 dollar repair...good luck