6l80/90

[Mr. 250r]

Originally Posted by AMERICAN PICK-UP

gm engineers think that lower rpm does translate into more mpg. so to get up to cafe fuel mileage standards that is why every 2014 silverado will come with the 6 speed tranny. but when they get out in real the world we will see what happens. i have a customer that just got his 2013 avalanche performance tuned to keep his 6l80e tranny from shifing up and down in town. he is happy with it after the tune but has not checked the mileage yet.

Camaro skip shift anyone? Most annoying idea ever implemented lol and i wish they would drop the 5.3 and bring in the 5.5 already new body style should bring new motor, not saying i don't like the 5.3 but the 5.5 would be a great new motor for the new trucks