Duramax Diesels Forum Truck of the Week
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Old 07-12-2017, 12:24 PM
RonC RonC is offline
Join Date: Jul 2017
Location: central NJ
Posts: 10
Default beside myself after first trans fluid change

I have a 2006 silverado 2500 hd with the allison trans and its my toy hauler for my showcars and yesterday I had its first fluid change since I bought it new.It only has 40k miles and I had just finished a trip back from Kentucky to pick up my neices rv trailer.So being the trans was never serviced I decided to take it to the dealer that has taken care of my truck since new.Boy I would never think that would have any regrets but my truck trans temp after the service is running above the normal range that it was running with the original fluid!! Withe the original fluid NOT TOWING it would stay about 150 160 and towing my trailer with my showcar (about 8k lbs) would run about 200 degrees and maybe 220 uphill.Now without towing its running 180 and sometimes allmost 200. Is the dextron 6 fluid different than the original dextron 6 that the factory put in my truck when new? The dipstick says use dextron 6 so its not a early trans that was built before dex 6.Anyone else have this problem? Its driveing me crazy!!
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