transmission service
#7
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,156
If you check the service information, GM does state you CAN mix DexVI with DexIII and no issues.
And I would recommend you pan drop and do a fluid and filter change on the trans. I'm not a fan of flushes.
Keep in mind, pan dropping will not change the fluid in the torque converter. Some view it as an issue, I never have.
And I would recommend you pan drop and do a fluid and filter change on the trans. I'm not a fan of flushes.
Keep in mind, pan dropping will not change the fluid in the torque converter. Some view it as an issue, I never have.
#8
while i totally agree that you can mix dex III and dex VI, if your dex III is dirty and contaminated, you are going to contaminate the new fluid you are going to add...on the other hand if you have over 100k miles and the trans has NEVER been serviced, i would not do a flush...