I'm tuned and deleted, went to a big diesel event (Rudy's Truck Jam) for diesel pulls and drags up near Greensboro, NC. Ran 4 passes at the drag strip and now the ELOC DIFFERENTIAL won't unlock. I've cycled 5-6 times, bumped it forward backward and no go. All I can think of is to jack it up and try to rock it and bump it, and maybe a few taps with a ball peen hammer.

I've heard these E loc rear ends can barely handle stock power and really be reliable, so tuning is an even bigger issue. That's word of mouth by a few people there but don't know. I've been tuned for over two years, I've done truck pulls at least 15 times and no issues.
Maybe it wasn't my day.
Has anyone had experience or know about this happening?

For what it's worth:
R/T .721 sec
60' time 1.883 sec
330' time 5.686 sec
1/8 mile time 8.965 sec
1/8 mile speed 75.14 mph

Truck weight 8,450 lbs!

 

If my memory serves me right the computer should automatically disengage the E-Locker above a certain MPH, I want to say 30?? Also have you tried driving to the left and right? I haven't ripped mine apart to really look at it, so I can't be the best of help.