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SDT1DYI · 12-05-2019, 07:28 PM

Decided to change the screw on external transmission filter during other maintenance work on my 2018 3500 Duramax.
Purchased a well know house brand replacement filter . Immediately experienced down shifting problems. Purchased a GM filter from the dealer @ a 34.00 cost.
Problems ended. Going to purchase a couple of more for inventory.

Be aware if you have late model Duramax tow rig.

Steve Teeter. STK 6380/6283

12-05-2019, 07:28 PM	#1
SDT1DYI Member Join Date: Nov 2016 Location: Indianola Washington Posts: 406 Likes: 0 Liked 456 Times in 148 Posts	Duramax Allison issue Decided to change the screw on external transmission filter during other maintenance work on my 2018 3500 Duramax. Purchased a well know house brand replacement filter . Immediately experienced down shifting problems. Purchased a GM filter from the dealer @ a 34.00 cost. Problems ended. Going to purchase a couple of more for inventory. Be aware if you have late model Duramax tow rig. Steve Teeter. STK 6380/6283