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Old 06-16-2017, 07:32 PM   #2
Blue Bowtie
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Re: 2005 Yukon Denali Transmission issue

The recommended "transmission additive" is to remove the pan and filter, "add" a new filter and "add" 5-7 quarts of clean Dexron VI (never Dex 3) and hope it cleans up the hydraulics. If you find excessive metal or piece of friction material in the pan when it is removed, you'll know to plan for a rebuild sometime soon.
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