You can unplug your edge from your VP44 and see what the attitude reads, if it is working it should show a number, can't remember what it is, I think it's 41 but not sure(call edge) I had to do this on my 01.
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06 slt, 4x4, qc, sb, g56, smarty TNT/mp8, di pricol gauges, sbc 3600 dd, fluidampr, s&b cai, cfm+, 5" tb exhaust into 6" aussies, eliminator fuel system, arson II cp3 kit, rail cap, II edm transfer tubes, top gun customz leveling kit, hurst shift handle and roll control, ss bed rails, custom led light bar, truck nutz, and a lot more on the wish list
dynos 504hp and 1180tq
CUMMINS GUYS KEEP IT STRAIGHT, THE OTHERS SWING BOTH WAYS