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

2 Answers


Yes, the factory fill was Dexron III. Dexron VI is the new version and is backward compatible. Was the transmission shifting well before the fluid change? If not, your mechanic did something wrong, but using the older spec fluid is fine. So more than likely they under or overfilled the transmission or forgot a seal on the trans filter. BTW: in some cases, if the vehicle has a lot of miles and never had regular fluid changes, a fluid change could bring on shifting issues.

Best Answer Mark helpful

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.

Your Answer:


Looking for a Used Envoy in your area?

CarGurus has 36 nationwide Envoy listings starting at $2,600.

Postal Code:

GMC Envoy Experts

  • #1
  • #2
  • #3
    Tom Demyan
View All

Related Models For Sale

Used Chevrolet TrailBlazer
45 listings starting at $4,495
Used GMC Yukon
15 Great Deals out of 1,143 listings starting at $3,995
Used GMC Envoy XL
8 listings
Used Chevrolet Tahoe
12 Great Deals out of 867 listings starting at $6,999
Used Ford Explorer
19 Great Deals out of 1,786 listings starting at $3,990
Used Chevrolet Equinox
76 Great Deals out of 4,832 listings starting at $4,289
Used GMC Sierra 1500
77 Great Deals out of 11,128 listings starting at $4,499
Used Jeep Grand Cherokee
75 Great Deals out of 5,189 listings starting at $2,500
Used Ford Escape
131 Great Deals out of 6,580 listings starting at $1,411
Used Chevrolet Silverado 1500
115 Great Deals out of 11,559 listings starting at $4,900
Used GMC Yukon XL
25 Great Deals out of 696 listings starting at $5,995
Used Nissan Murano
26 Great Deals out of 1,399 listings starting at $4,400

Used Cars For Sale

2009 GMC Envoy For Sale
1 listings starting at $6,871
2008 GMC Envoy For Sale
2 listings starting at $8,995
2007 GMC Envoy For Sale
8 listings starting at $2,616
2006 GMC Envoy For Sale
8 listings starting at $2,995
2005 GMC Envoy For Sale
6 listings starting at $2,600

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.