Hi Forum members .
Have the GV now behind my John Cope CTR-4 for 2 years.
Have had same issue for last 2 years.
After driving a total of about 2000 miles the GV disengages by it self when activated on highway.
It's not a temp problem.
2 years ago had issue first time. Changed fluids and cleaned filter.
Problem gone. Now last year again same issue.
Have momentary switch on Cheetah shifter and select on moment always above 50mp/h.
Strange thing is that it's never first drive after winter of when cold or very hot.
Always in august . 2016 and 2015.
Have called GV tech line and have had very good test instructions but was wondering if anybody have had this also.