'02 camaro ss. Been reading about this for years and it all seems straight forward. I pulled the tune from the car, changed the drop down selection from PWM to NONE, saved.
Tried write calibration only.
Tried re-write entire.
Tried write vin/tunerlock/vats.
Tried relink vats.
After each try I put tape over the pellet in the key and it won't even crank over.
Put the original tune back in and it's back to normal.
What am I not doing right here? (or should I say whats left out of every how-to I've ever read about this?)