Hello installed 09 Silverado 6l80e in older Chevy truck using pcs-2660 to communicate with it. I'm also trying out/using a tutd / tow haul canbus module to use the Tutd and tow haul signals from the stock Silverado column shifter and sends them thru canbus to the tranny. I can get it to work after I disconnect the batteries for 20 seconds or so then start up the truck shift into d5 tranny goes into Tutd mode and shifts manually. But than after 5 or so minutes just goes out of Tutd mode to normal mode and than shifts automatically even in the middle of driving.
What would cause it to jump out of Tutd mode to normal mode? The only way to get it back into Tutd mode is disconnect the batteries and or rewrite the tune, then shift back to d5 than it will work but only for a few minuites like it times out.