looking for suggestions, I put a ppe stage 5 kit in a friend of mines lbz. everything went together smooth except for the C3 apply piston, it took a tremendous amount of force to install it, but a ppe assured me not to worry. after filling up with fluid and re-checking after the truck was fully warmed up I pulled it out of the shop and within about 50 feet I noticed the check engine light and the truck would not shift out of 1st gear. so I stopped to check fluid level & cleared the code with a V2 and tried to move again, it stayed in 1st untill it went into neutral, at this time the light is on again, and on the dash it says shift range inhibitted. some early suggestions were to check the resistance of the B trim solenoid which was good & the speed sensor on the t/case which also is good, i also polished the A & B trim valves as the B valve had some sticking issues, thanks for any suggestions