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bought this truck brand new. at 65k, after years of towing an airstream trailer i started getting the dreaded howling in the drive train. noise was coming from the front diff and rear pinion, i rolled with it till at 100k , i spun out on black ice going 15mph..clipped the curb..bent a axle!. so rebuilt the rear, axles, berings, carrier& pinion berings, seals...2 days in the driveway all good. fyi - i know their is yes and no's on using a posi additive,but used it anyway.. the shitty ratchet design posi seems to really like it. well flushed the transfer case & front diff and did fresh fuilds. the rear was spinning like a swiss watch. the noise lessened but now was consentrated to just the front, making progress. ive been looking foward to doing the front diff next till today. hit the gas leaving a traffic light and BANG..sounded like when you drop a driveshaft on a holeshot. wow.. no drive..no reverse..no park..just a bad howling gearing noise even in neutral!. did the transfer case chain snap ?? did the tranny crap ?? any cues....Bueller ?