As I'm sitting waiting over 3hr for a tow.
Pulled out onto the road, hit the fuel to get into traffic, hit 3rd gear, big boom under the truck. the engine runs fine, but no drive train movement.
I switched to 4x4, nothing, so it's not the rear end.
I jammed it in to park, no grinding.
It's got to be the front of the Trans.
Any thoughts besides lay off the happy pedal?
Only 29000mi, and on level 2 tune?
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