Compression Ignition Addict
Join Date: Sep 2011
Location: Glastonbury, CT
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I know this isn't any help to you but I just started to notice a slight vibration starting at 70 mph and crawled under the truck and saw a line of oil on the diff as well. Funny thing is my driveshaft and oil seal were replaced not long ago. So not sure what's going on.
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2007 F250 KR CCSB 4x4 ARP's, PMM's EGR delete, PMM's coolant filter, SCT Sf3, GearHead's SRL & SRLXX, Rancho 7000's, IDP FICM tuning, blue spring, Wicked Wheel 2, No Limit Fab. CAI., 2008 rear differential cover.
2006 GMC Savanna 3500 6.6 LBZ Duramax work van