1997 c1500 5.7 V8 no start

[97c1500guy]

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All I did was remove the intake/unplug the sensors, and added a fuel additive to the tank and it started right up. With the intake on and/or the sensors plugged in it wouldn't start

The two sensors are the mass airflow sensor and the air intake temperature sensor

 

[WICruiser-97]

So if you unplug one sensor at a time you can create/cure the no start condition?

If so look at the wiring for the sensors to make sure there isn't a break/short to ground and if wiring is okay replace the sensor.