My van is nearly dead

lotsofmiles

Father of the Van
Dec 4, 2008
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Michigan
The 6L90 is like relearning my driving style.
I love the way the 4L80 coasts when you let of the gas pedal.
This 6 speed slows down as fast or faster than the allison in the truck. Owners manual says it has transmission braking in tow haul mode.
It seems to accelerate better and shift smoother than the old van.

I'm wondering if the dealership filled it with corn juice. Having a hard time getting 16 mpg out of it per dash, and it isn't even loaded with my equipment yet.