Before anyone says look, I have, and still will . My 99 drivers sport seat lumbar support does not work. Originally, I check under the seat and it was disconnected. Pluggged it in, and I could hear the pump work, but no results. Any suggestions on the next step? Do I take the module out of the bag and check for air flow from the pump? One step at a time.
Thanks

 

I have my 99 manuals out, let me check and see if they go into details about the seats.

 

133 pages on just the seat alone and most of the first 100 are electrical related. Are there any DTCs coming in? I would check the pump to see if it is blowing any air out.

The the manual steps check to verify power to the pump and then if the pump runs check for damage to the lumbar hoses and bladders.

 

My lateral support bladders both had small splits at the seams. They were small enough that they'd air up, then just deflate right back down.

It's very easy to get the seat covers off to the point of exposing the bladders, so you could check 'em for leaks and / or replace them. I did the blood pressure cuff "mod" on mine and have thoroughly enjoyed it! After I saw how cheaply made those bladders where, and how much freakin' $$$ they cost , it was a no-brainer to use the BP cuffs. I've loved it so much on my side of the car that I went out and bought some more cuffs to do the passenger seat as well! BTW, I'm a skinny guy (6' tall and 135 lbs soakin' wet) and the OEM lateral support bladders didn't inflate large enough to fit me. The adult-sized BP cuffs have no such problem!

Here's a link to the writeup that I used - shows seat cover removal steps too: http://forums.corvetteforum.com/c5-g...ters-pics.html

When I did mine, the cuffs that I got had longer hoses attached to them than did the ones in the post. I was able to remove them and just attach the original hoses directly to the nipples on the cuffs. This allowed for better routing of air lines - if your lines are too long, they can get pinched under seat padding, etc. and won't properly inflate the new bladders.

Hope this helps you some.

Shawn

 

I'll have to check for codes later, but, is there a quick way to check if air is coming out of blower? or, do I need to take the leather cover off the blower and module to check.
Thanks

 

I'm not sure how much of a pain it'd be to get to the blower itself; I haven't tried it. Once you've done it once or twice, the seat covers take only about a minute to take off and you can get to all the hoses. You could just pull the hose off the lumbar bladders (lower and upper) and see if any air is blowing through them when you toggle the respective switches.

[Edit:] You don't have to take the seat covers off all the way. You just fold the back part down into the seat bottom and this exposes the bladders and hoses.

 

thanks for the help, I'll have to take a look and see.