Airmatic diagonal lean 07 GL450
I've searched myself crazy, and I am -this- close to ripping out Airmatic for coil springs. I need diagnosis help: Someone local to Dallas with Star software?
Originally all four corners were stuck raised (no ADS option, just standard Airmatic.) I replaced the compressor because of the a9/1y1 error. That didn't seem to correct it. I disconnected he battery and removing fuses and relays for days and that didn't deflate it. Reconnected after a week, and resumed driving. A few days later the left front dropped low, and the right rear was still raised. The right front and left rear appear to be normal height, so the truck is leaning. Codes vary between 5506, 5507, 5172, and I am suspecting the valve block. The cost to convert to springs is about $500. If I replace the valve block for $250 and still find that I have a bad left front strut, that's another ~$200. To have a dealer recalibrat elevels is another $200. If the problem persists after that, then I've spent more than the cost to remove Airmatic. I did not replace the relay when I swapped out the compressor, but now the only code is 5506 as of 1/10/18. So I guess I could spend the next $30 and see if a new relay fixes it. I'll post photos of the truck when I get back home, but I'm perplexed. The left front strut seems firm, but low. I can't squeeze the bag, which seems to indicate that it's not leaking. It's an Arnott replacement from before I bought the truck but their warranty sadly isn't transferable. I've put about 8000 miles on the truck (now at 74,000.)
I wonder if it just needs a recalibration of the Airmatic levels? All four level sensors appear to be functional; I just don't know where to turn to fix the problem at this point. Please chime in.
Way low on the left fron, way high on the right rear, and about normal on the opposite corners.
Says the position is locked? Not sure how to address this. In prior weeks, this was set to "No" or "Off" I don't recall which.