Just got my gap tool in the mail. After activating the tool and scanning fault this is what i got...

 

So you got nothing?

 

Cleared fault, reflashed amk pump and still throws fault. Not sure at this point how to fix this problem

 

pump wont run at all. Brand new out of the box. Tried old pump as well and neither run now

 

For some reason the image did not load before. Weird.

You have an exhaust fault of some sorta. The truck is trying to vent and the pressure is not dropping. Either the pressure sensor at the center valve block is damaged (unlikely) or you have an abstraction or a line hooked up wrong. Or a cheap aftermarket compressor, they cause this fault too.

 

Did you pull codes with the old compressor hooked up and after clearing them? Guessing same cause this is a self-clearing fault. Meaning every time the truck starts, its stored BUT its ignored unless it happens again. Like I said, the truck is not venting out like it is expecting. It opens up the exhaust to vent and then it watches the gallery pressure and sees its not dropping = fault. Are you sure the other 3-wire connector is hooked up right?

 

just put new o ring kit in blocks before pulling old pump. They worked great and held air for several days before front dropped. I assume to auto level due to drive way incline. 100% lines are clear and installed correctly.

 

Incline does not cause it to level. Its relative to absolute ground. But its not the issue, gallery pressure is observed from the front block to the rear block and from the center block into the compressor. Its like one big straw with a pressure sensor on the side. So front and rear valve blocks are ruled out. The center valve block *could* be dumping into the gallery causing pressure not to drop like it should. This has been reported before. What is odd is the procedure I told you to do, command the truck to raise right away after starting before the error gets a chance, should have worked in this case. So basically you are back to it being wiring.

 

Of course you could just manually dump the gallery pressure by disconnecting a line at the dryer. Ton of air should come out if there is indeed pressure pent up. If you do that and then fire up the truck, it should run. If not, then its electrical or center valve block hooked up wrong.

 

ill check and see if there us pressure. As far as the center block being hooked up wrong. With the old pump in run the suspension and drove it seconds before swapping the new pump. Zero lines came off center block. No way its hooked up wrong. Ill dump the air and see what happens. Thanks for all the feedback.