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So my fuel, oil pressure and voltage gauge were not working and would not make anything even when putting the switch on run or start... also the wait light wasnt working but only flickering... installed new grounding harness, smart box and HSU and now wait light is fixed but still having issues...

Guys, me again! Driving the tryck feels like gears shift beautifully but at 40mph i get a nasty grinding noise... it gets better if speed goes pass 45 or if I slow down to under 40... it is not vibration from exhaust heat shields... seens like something in the transmission... Any input would be...

Hi Guys, I'm a new Hmmwv owner and thanks to all the info on this site I've been able to solve some issues but electric system is not my forte. I bought a grounding harness and got it on the mail today. Looking at my vehicle I just realized that there is no grounding cable to the smart box...

Hi Guys, pretty new m998 owner and not a mechanic... looking from the underside of the truck I see some oil leaking around the oil pan and the oil filter looked also oil stained... Grabbed a towel and when cleaning the filter I turned it by hand gently to make sure it was tight and the whole...