The EGR valve is located in the center of the intake, at the front of the engine, between the alternator and the A/C compressor. I've added a picture of the location under "Links". It is titled "Picture of EGR valve location, on 1996 - 2001 4.3L (262c.i.) Vortec V6 engines"
yes
internal
From what I been reading there is no egr on this engine.
The 1997 S10 Blazer has an egr (Exhaust Gas Reclaimer) valve. It also does not have a point distributor, it is electronic.
Check your EGR valve Check EGR valve
Up front, on top of the engine, next to the thermostat housing.
remove the 2 bolts andharness
In front of the radiator between the grill and the radiator
Right below the EGR valve bolted to the transmission.
It is in the middle between the intake and the water pump.
Yes.
What engine???