So the past 2 weeks I have had an issue where my 2013 auto tranny will randomly throw codes P0732 P0733 and P0734(wrong gear ratio in 3rd etc..).
No CEL just limp mode? where it would only stay in 3rd gear.
Dealer was certain it was an issue with Superchips(I regeared to 5.13's). SuperChips is actually still investigating as they didnt have a test vehicle when I opened the trouble ticket.
Today I the dealer was actually gong to replace the speed sensor in the tranny....
however, I find out that Yukon knows that the Auto locker they make ,Grizzly, will trick the computer into thinking there is something wrong when the locker locks and frees up during turns etc....thus causing the limp mode.
This is the locker I have in the rear..installed when I regeared to 5.13.
After a quick search on Google I found the Detroit Lockers are having similar issues.
The only fix is to go with a selectable locker which the shop has offered to do with some extra cost either on labor or locker side. They are suppose to call me tomorrow with the details. I really dont think I should have to put any more out of pocket if they sold me something that wont work.
I read that disabling the Traction control would also solve it as thats where the problem starts. I have gotten the traction control to come on when turning corners then it goes off.
I guess I am just not sure if there is a reall negative to diabling the traction control completely following the instruction here:
'07-Present Wrangler's Control System - ESP Off Photo & Image Gallery
Or just get the selectable locker.