- Sep 6, 2013
- 35
I have a 2009 Saab 9.7x with rear air suspension. The truck just turned 70k miles. Was working perfectly, then I took it out to dinner Friday evening and noticed it had a pretty bumpy ride. Looked at it in the parking lot and it did look low in the rear. Today, I was going to take it out again, and noticed the low stance, so I checked the fuses and relays, did not find a problem- however, that manual is a bit cryptic, and I am not sure if I checked all that need to be checked. I did identify fuse #1 as the Elec. Controlled Air Suspension- 30A.- and its good. Also the big #68 "Air Pump" fuse- also good. Checked relay #69 "air solenoid" by swapping out with known working solenoids and found no improvement.
Normally I would hear the pump come on if it needed air. Somewhat typical to hear it at start-up, but not always. I did hear three clicks coming form under the (right?) rear as I was going around checking on things but never heard the pump come on.
Reading here and there about Trailblazers, Envoys, Bravadas, etc..., I realize this system likely operates each side independently, with a ride height sensor at each wheel, and dual outlets on the pump. Seems overly complicated compared to my Navigator which uses a single outlet on the pump and a splitter at the back to split off to each bag, and a single ride height sensor. Whatever, it is what it is. That said, since both sides are down, I suspect a pump problem- like maybe it went out a day or so before and it has taken a bit of time to bleed down. Otherwise, if it were a single bag, it would have sagged to one side first, before blowing out the pump from trying to level it? Still doesn't make sense that it never blew a fuse.
Well, looking for tips on what I should check and in what order.
I should mention I owned it since it was new. Wife drove to and from work all these years, and now I am working it in construction. I would not consider it tough going by any means, as it is usually only a few yards off pavement and in the grass on the side of a roadway. Also, no towing, ever. And I only carry maybe 50 lbs of gear with me. so not much of a load. Replaced tires and xfer case fluid recently and inspected the bags and they looked good, FWIW.
Thanks in advance for your help!
Normally I would hear the pump come on if it needed air. Somewhat typical to hear it at start-up, but not always. I did hear three clicks coming form under the (right?) rear as I was going around checking on things but never heard the pump come on.
Reading here and there about Trailblazers, Envoys, Bravadas, etc..., I realize this system likely operates each side independently, with a ride height sensor at each wheel, and dual outlets on the pump. Seems overly complicated compared to my Navigator which uses a single outlet on the pump and a splitter at the back to split off to each bag, and a single ride height sensor. Whatever, it is what it is. That said, since both sides are down, I suspect a pump problem- like maybe it went out a day or so before and it has taken a bit of time to bleed down. Otherwise, if it were a single bag, it would have sagged to one side first, before blowing out the pump from trying to level it? Still doesn't make sense that it never blew a fuse.
Well, looking for tips on what I should check and in what order.
I should mention I owned it since it was new. Wife drove to and from work all these years, and now I am working it in construction. I would not consider it tough going by any means, as it is usually only a few yards off pavement and in the grass on the side of a roadway. Also, no towing, ever. And I only carry maybe 50 lbs of gear with me. so not much of a load. Replaced tires and xfer case fluid recently and inspected the bags and they looked good, FWIW.
Thanks in advance for your help!