tapping noise unbder truck
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CF Junior Member
Joined: Aug 2011
Posts: 32
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tapping noise unbder truck
2007 NNBS LTZ VMAX 6.0 4X4: Happens after warm up. Goes away for few minutes if I shut off and restart. Doesn't change with engine revs, gear, 4wd or 2wd, driving or stopped. Don't notice any change in way truck drives. Sounds like maybe a solenoid or relief valve opening and closing? Any idea what it could be? listen to link:
