- Sep 16, 2013
- 88
Sorry for the creation of yet another air-ride suspension thread but I searched through quite a number of them and didn't see my situation.
I bought my Envoy about a year ago and the dealership I purchased from installed new (at least I believe they were new) airbags due to the rear end sinking down immediately after the truck being shut off. They would inflate up right away upon starting, but clearly could not hold air. After they replaced the airbags, the system held air and I purchased the truck.
Fast forward to now and I have noticed the rear end of the truck is lower than it once was. I have noticed this over the past couple months but have not had time to really look into the issue and the ride has still been smooth, so it's more of trying to fix how it looks and before more problems are created. As of this morning, the left rear side is at 30 3/4" measured from the ground to the wheel-well, and the right rear side is 31 1/4". A couple days ago both sides were about a quarter to half inch higher, and all 4 tires are inflated to spec. I never really measured or paid close attention to the height before I noticed this, but it looks to be sitting lower than it used to. When I start the truck I can hear the compressor kick on and run for about a minute and then turn off. When it's running the height does not seem to go up or down at all. I have not noticed the compressor kick on any time other than when the truck is started, but it runs after every single start. The only other detail that I think may help is that back in April I had 4 new tires installed and I don't know if it's possible that the shop who put them on inadvertently adjusted a sensor or line for the suspension.
Any help for a next step of diagnosing this problem would be appreciated. Like most, I don't want to replace anything I don't need to and I don't want to pay for a shop to spend hours hunting down the problem if I am able to troubleshoot it with the help of the community. I'm not afraid to get my hands dirty but I am not sure what to look for next.
Also, before converting to coil springs is mentioned, I really like the ride of the air suspension system so I would prefer to keep it; a conversion might be an option depending on what the problem is and how much it will cost to fix the air system, but I want to figure that out first.
I bought my Envoy about a year ago and the dealership I purchased from installed new (at least I believe they were new) airbags due to the rear end sinking down immediately after the truck being shut off. They would inflate up right away upon starting, but clearly could not hold air. After they replaced the airbags, the system held air and I purchased the truck.
Fast forward to now and I have noticed the rear end of the truck is lower than it once was. I have noticed this over the past couple months but have not had time to really look into the issue and the ride has still been smooth, so it's more of trying to fix how it looks and before more problems are created. As of this morning, the left rear side is at 30 3/4" measured from the ground to the wheel-well, and the right rear side is 31 1/4". A couple days ago both sides were about a quarter to half inch higher, and all 4 tires are inflated to spec. I never really measured or paid close attention to the height before I noticed this, but it looks to be sitting lower than it used to. When I start the truck I can hear the compressor kick on and run for about a minute and then turn off. When it's running the height does not seem to go up or down at all. I have not noticed the compressor kick on any time other than when the truck is started, but it runs after every single start. The only other detail that I think may help is that back in April I had 4 new tires installed and I don't know if it's possible that the shop who put them on inadvertently adjusted a sensor or line for the suspension.
Any help for a next step of diagnosing this problem would be appreciated. Like most, I don't want to replace anything I don't need to and I don't want to pay for a shop to spend hours hunting down the problem if I am able to troubleshoot it with the help of the community. I'm not afraid to get my hands dirty but I am not sure what to look for next.
Also, before converting to coil springs is mentioned, I really like the ride of the air suspension system so I would prefer to keep it; a conversion might be an option depending on what the problem is and how much it will cost to fix the air system, but I want to figure that out first.