Hello all, just replaced my transmission and transfer case, both reman. Now the Suburban won't engage any gears as if it were stuck in neutral. Fluid is fine, encoder motor is fine, transfer case is not stuck in neutral. I did get to drive it for a few weeks before all this happened and I'm unsure of what to to down now.

 

Scan for trans. codes is first step to see if any are present. Just cause it's a reman doesn't mean it had a failure.

 

No codes thrown what so ever.