Need Auto trans shop recommendation Denver/Boulder, CO

[DFrank]

My '05 is having issues down shifting to second, when 3rd is what it should find. It throws code P1573 and the check engine light, then won't pass 2nd gear, until I reset the codes with the Edge insight controller.

I've already replaced the TTVA, the solenoid and the transducer.

I am ready to seek professional help.

Anyone reliable in my area?

Boulder would be ideal, but Denver isn't that a big hassle.

I don't need major upgrades, just reliable shifting.

Thanks,