Yes, the distributor has to come out to remove the intake manifold in order to remove the heads.
what is the distributor setting for a 1996 Chevy blazer
It is a tight fit, but you can get to them from the top if you remove the distributor first.
buy a new distributor
its more likely to be the intake gaskets.
how do you set the timing on a distriubtor for a 2002 Chevy blazer
How to Remove the Steering wheel From a Chevy Blazer 2001
In the distributor.
In the rear of the distributor.
how do you remove the dashboard of a 2002 Chevy blazer
No, the last year that GM used points in their distributor was in 1972.
The 1997 S10 Blazer has an egr (Exhaust Gas Reclaimer) valve. It also does not have a point distributor, it is electronic.
The ignition module is located in the distributor, under the distributor cap.