Discussion:
Shifting problem code ec 7-2

What is code for? Trouble shooting for a customer. Starts up and immediately goes in reverse. Put in forward and goes to neutral. So transmission stays in reverse when lever is in neutral and in reverse. Does not move forward. Customer said that originally truck would quit shifting to forward after running a bit, that's why they changed shifter. After they did that it did the same thing and but started making a grinding noise and quit shifting to forward. I'm thinking transmission is mechanically stuck in reverse but when you try and shift to forward it causing it to engage both clutch packs? Any ideas?
  • Posted 21 Jan 2017 12:23
  • By Lilmark
  • joined 21 Jan'17 - 1 message
  • Arizona, United States
Showing items 1 - 1 of 1 results.
I think you diagnosed it properly. The reverse clutch is stuck. What I do to prove to myself the trans has to come out is drain the oil and start it. If it still goes in reverse, bad news. What I have found is either one of the steel plates has broken in the clutch pack and double stacked itself or the plates warped so bad from slipped the inching it can't disengage.
  • Posted 21 Jan 2017 21:30
  • By mrfixit
  • joined 11 Dec'08 - 1,434 messages
  • New York, United States

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