there is no choke it has idle air control valve it is tbi corect
you cant it a TBI
There is no choke on an injection system. The cold start enrichment system performs this function.
Choke is out of adjustment
no it does not it's fuel injected. It is most likely a TBI(4.3Liter )not Multiport (4.3 Liter Vortec)
That year don't HAVE a choke. Is your check engine light on ? If it is, then you need to have the engine scanned with an engine scanner to see what is going on. Problem could be the MAP sensor, coolant sensor,fuel pressure regulator. Any of these problems could be making it run RICH are LEAN. Fuel injection fuel system DID NOT USE A CHOKE.
YES
yes they will
you can as long as you use your TBI heads if you want to use the vortec heads with TBI you will need a special intake manifold or a carb manifold with a adapter to mount your throttle body to the carb manifold heres some more info TBI heads will mount to the vortec block TBI intake manifold has 12 bolts vortec intake manifold has 8 bolts
no such thing as a vortec 5.3 tbi
Its TBI Vin "W" is CPI.
It has TBI / Throttle body injection.