Trying to calibrate my speedometer with a hypertech but need to plug it in and am not 100% sure where to do so. Can't see anything in the manual on it either. Searched around here and saw people who have used the same thing as me but not how to access the OBD.

Thanks in advance!

 

the OBD plug should be under the dash, below the steering wheel and behind the plastic trim.
Just stand outside your truck and bend over to look under the steering wheel towards the pedals, you should see it.