Was driving this morning and it happened. Limped to work, was about a mile away. Shut off and restarted, issue persisted. Reached in hte back and grabbed my scan tool, found codes. Cleared them, and full engine power was restored. Haven't done anything yet, home is a far way away. Any suggestions would be great.

I'm currently reading this, and it has some good info: Part 1 -P0220 TP Sensor B Circuit Malfunction (with TAC Electronic Throttle Body)

 

This issue is persisting. I reset the codes and it's back to normal. Problem is it's fine most of the time. When in the driveway I go through it all and can't find any problem. Then I'll be sitting at a light and boom, it dies on me. I have to shift to park, start it, reduced power, and limp my way out of the way.

At this point it's a safety hazard. When it cuts out it's easy to lose control, power steering is gone, and there's no telling when it's going to happen. All wires look fine that I can see. I'm at a loss here.

 

Sounds like a wire breaking inside the loom or right at a connector pin crimp somewhere. That or a possibly the engine ground is going out.

Hi, im getting a dtc p0220 Throttle/Pedal Sensor circuit B..silverado

That pretty much sums it up on checking it.

Could also be at the throttle pedal itself where the potentiometer switch and connector is there, or the potentiometer switches themselves either at the pedal or in the throttle body.