Easy fix.
Jewish Lighting.
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Easy fix.
Jewish Lighting.
I use a Blue Driver. Uses Blue Tooth on a Smart Phone. Reads ABS. Does live engine parameters. Website says you can check compatibility online before you buy. Saved me a few grand so far. YMMV
https://us.bluedriver.com/pages/bluedriver
I'm just wondering if the OP's problem is the ABS pump unit reservoir is having issues. It is basically a spring loaded cannister with a diaphragm, If it has issues it usually will make a groaning sound due to fluids in a faulty unit. Kind of like a ships hull when it is sinking and under hydraulic pressure. It will groan. When you have 5 trucks, a car, a motorhome, two boats and a jetski, you learn stuff. WTF was I thinking?