chevy silverado light duty single cab 1500 4x4 choking out when you accelerate

I doubt the ignition switch is causing your problem. All the other fixes are a possibility. I know you have no check engine light but you want it scanned for any. I would have the fuel pressure check, it could be the mass flow, or the catalytic. You can pressure test the exhaust system, see below. The O2 sensor can cause what happening. Or a simple as a good tuneup, you don't say how many miles and it may be time for plugs and wires anyway...

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Well it is not the ignition switch. No codes, so it has to be a fuel issue, or the plugged cat if so, you can check that in the dark, have the vehicle warmed up, revving it what you can and look at the cat. closest to the exhaust manifolds, if they were plugged they would have an orange glow to them. Ya, the mass air flow sensor should be cleaned along with the throttle body. I need to know the engine size for further investigation.