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2013 GMC sierra Denali front transfer case rear pinion seal

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      Dugan59
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      Why! I am now stranded again in Iowa because my 2013 GMC sierra Denali front transfer case pinion seal blew out again, this will be the 4th time in 3 years and has stranded me twice while camping far away from home. I pull a 31 ft travel trailer what could be the cause of this .90 weight all over truck and camper.???????????

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