Tropical Guy
Junior Member
Just had a transmission related issue with my 2018 3500 Laramie Longhorn diesel that I thought I would post as an FYI for anyone else that is having similar issues. The truck was having an issue where it seemed to fall out of drive to neutral resulting in loss of power and a revving of the engine while my foot was on the gas. The drive indicators on console would also light up in yellow. With some experimentation I realized that I could shift into park and then put it back into drive which would work for a while but the duration of shift worked for less and less time the more times I shifted until I was only able to drive a few feet at a time. Also through all of this reverse seemed to work fine. The shop I took it to scanned for codes to indicate what was causing the problem but none were given by the truck. The fix was replacing a switch on the transmission column in the cab. This could have been a very expensive fix as one company I contacted suggested a full trans rebuild was required to fix the issue which would have been about $5000 instead of the $1000 I ended up paying.
Last edited: