2002 Bravada: electronically controlled air suspension...

ECASS Electronically Controlled Air Suspension System

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Does your buick have memory seats ? Are you familiar with electronically controlled systems , they have a control module ?

1. Tech Tip: Servicing Bravada Electronic Controlled Air ...

   www.autocarepro.com/tech-tip-servicing-bravada-electronic-controlled-a...
   Aug 14, 2007 - I borrowed a friend's 2002 Oldsmobile Bravada to pick up some supplies ... The Electronic Controlled Air Suspension (ECAS) compressor was running,... I found the compressor check valve sticking in the compressor housing ...

I've never dealt with this type of air system, but for other types of leaks I use soapy water in a spray bottle. Try spraying it over the airbag - the leak may show itself via small bubbles!

LEAK IS AIR LINE FROM COMPRESSOR TO REAR SUSPENSION
OR...REAR SUSPENSION COMPONENT FAILURE

when these begin to leak the only solution is to replace

it is a air shock ,and check and see the condition of the shocks. you may need to replace all 4 shocks

I bought an '02 Bravada a couple months ago. I was told that this is normal. Since it's an air ride suspension the air escapes when the vehicle is not in use like overnight. Then after starting up the air compressor will turn on and inflate the air ride suspension.

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

air suspension not inflating what should i do