shift problems

Hey guys, I have a 2013 2500 diesel with a ton of mods on it. It has a suncoast transmission in it. The trans has a slip from second to third which you can feel it trying to grab. From 5th to 6th it slams pretty bad. Anyone have any ideas for a cause of such things? I am posting this for a...

Hello everybody, anybody have a 6.7 Cummins manual? I'm having shift issues between 2-3 & 3-4, more so between 2-3, its not only a rough shifting but also clunky. Has about 2200 miles on it, I've adjusted shift RPM's and speed, thought it was me not used to the new truck but not so sure, getting...

2000 miles on my hemi sport ram,four or five times now no reverse with console shifter.I go back to park then reverse then its ok. yesterday i back-up ok but when i hit drive she goes to fourth gear on the indicator and stays that way till i shut it off,about 10 miles city , not fun taking off...