[elpadgett03]

My tranny seems too shutter at certain speeds but when I let up on gas it ships perfect. What could cause this .

 

[FabricGATOR]

My tranny seems too shutter at certain speeds but when I let up on gas it ships perfect. What could cause this .

Check the transmission fluid level. you have to climb under the truck and there is a special procedure as they don't come with transmission dipstix anymore. Or a dealership can do it.

How many miles and do you wheel it a lot?
Do you keep the rear driveshafts lubricated with grease?