On a 1995 Chevy Blazer, the crankshaft position sensor (CKP) is located on the passenger side of the engine block, near the crankshaft pulley. There is
no camshaft position sensor (CMP) on most 1995 Chevy Blazer engines. These engines typically used the crankshaft position sensor for both timing and engine control. A distributor-based ignition system is more likely to be present than a system using a dedicated camshaft position sensor.
If you're having problems, it's much more likely that your issue is with the crankshaft position sensor than a nonexistent camshaft position sensor. Double-check your engine's specifics (engine code is helpful) before pursuing a CMP sensor replacement.