When you say tumbler, are you referring to the ignition lock cylinder? Do any of the other electrical components work?
It sounds like the key is not fully in the run position when you release it from start. Gently wiggle the key to see if the gauges start working. Do your best not to re-engage the starter.
Let me know. Also, let me know exactly what was done.
Saturday, April 24th, 2021 AT 10:31 PM