Join Date: Apr 2007
Location: Arnold, CA, USA
A couple of times on my K12LT I would miss 5th (top) gear and the tranny would pop out of 5th and into 4th, with a lot of clunking and and some bucking from the rear. It never ended up between gears, as I think yours did from your description.
I've never missed the high gears on my 07GT. I've missed 2nd gear a couple times, and it pops into neutral, and I've never seen the square box. Will try and make it happen with engine off.
K12LT 05 (sold)
K12GT 07 - build 12/06 BMSK-P ECU (ASC retrofit), V.3 airbox, new o2 sensor @18k, PowerFrk module @25k