My transmission dip stick says DX 3, yet Auto Zone told me Dextron VI

Asked by Jul 16, 2017 at 08:41 AM about the 2005 GMC Envoy

Question type: Maintenance & Repair

Mechanic put in DX3 now envoy is not shifting well what do I do

1 Answer


Last sentence in Tom's answer says it all. If the mechanic did a FULL tranny flush, chances of problems with either fluid is unfortunately high, and to no fault of the mechanic. Introducing all the new detergents will do it. GMT360 platform, it's best to only change the filter and replace lost fluid with Dex 6.

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