ESCM reset?

[lgrw2288]

IMO, it is likely not the ALC calibration that is the source of your issue. I'd bet that there is an issue with your ESCM, but a bi-directional scanner will be able to help confirm the source of your issue. I'm not real familiar with the VXDiag unit, but I am assuming that you can monitor what is going on, right on the tool, thus probably no need for Tech2Win usage.

most likely has nothing to do with the calibration and is likely a communication or hardware failure somewhere which the code will point to.

I'll let you know how it goes. Waiting for this to tool to get to me at the moment. I won't be surprised if the module is crapped out.

 

[Doubeleive]

I'll let you know how it goes. Waiting for this to tool to get to me at the moment. I won't be surprised if the module is crapped out.

until the code is read it literally could be any part of the system, a shock, a connection, a ride height sensor, the pump or even something else.
the system is pretty much impossible to diagnose without a tool

 

[lgrw2288]

Just an update: no DTCs, used the Tech2Win interface. Looks outdated but works nonetheless. I drove it this morning on the highway to my son’s hockey game and it drives ok. Not as soft as I was anticipating it, I guess it’s just the way these things drive. German cars have spoiled me apparently, I had an X5 and an Atlas that drove pretty nice before I got rid of those. Thanks for the input guys.

 

[Doubeleive]

Just an update: no DTCs, used the Tech2Win interface. Looks outdated but works nonetheless. I drove it this morning on the highway to my son’s hockey game and it drives ok. Not as soft as I was anticipating it, I guess it’s just the way these things drive. German cars have spoiled me apparently, I had an X5 and an Atlas that drove pretty nice before I got rid of those. Thanks for the input guys.

it is outdated by 10 years ago

 

[Doubeleive]

you might want to look in the historical data and see what cause the service suspension
the problem could intermittent also if the message comes back on, scan it while it is on.

 

[Joseph Garcia]

^^^x2^^^ Watch the scanner live data while driving. Take another person along who will drive, while you watch the scanner. You should be able to see all 4 shock actuators in progress in real time. You should see measurements between 0% and 100%. The higher the percentage, the stiffer the shock. Mine rarely go over 40%, and typically run at 0% on a smooth straight road.

 

[lgrw2288]

you might want to look in the historical data and see what cause the service suspension
the problem could intermittent also if the message comes back on, scan it while it is on.

Checked that, had no DTCs set. The service suspension light has never come on since I’ve owned it. Only time it came on was when I pulled the ALC fuse, so naturally it isn’t going to have any communication and set a fault. I’m not even worried about it at this point, it’s basically just me having too high of standards on a 15 year old SUV. It’s fine in smooth highway roads, which I’ll be doing next weekend on an 8 hour trip from NC to Maryland. I’ll bring my laptop and the VXDiag just in case.

 

[HACK BLOCK]

ANY UPDATES?

 

[lgrw2288]

ANY UPDATES?

Not really. I just basically chalked it up to expecting too much for a 15 year old SUV, though it does drive pretty smooth on highways and most roads. South Carolina roads are dog shit, so I think I would feel more bumps considering it’s a body on frame. Just took it from Charlotte to Ocean City, MD and then a few weeks later from Charlotte to Nashville, was relatively comfy.

 

[rogercoody1]

If your truck is 2013 or older, invest the ~$350 in an Tech 2 clone. As stated above, without a bi-directional scanner, you will be shooting the parts cannon, and in all probability, you won't get any further than you are now.

What is tech2 clone