Hello, This vehicle came in with a steady thumping noise on acceleration or when on highway. It does this when in Auto 4WD - this has the high end NP8 transfer case with auto 4wd system. It only does it in Auto 4wd. It does not do it in 2wd or in 4 wheel High ...

FIX posted 4/17/2003

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle