Remove the fuel tank for access
how to replace a heater core in a 1997 Chevy blazer
No, You will have to remove the fuel tank.
this site will help
How to remove and install the serpentine belt on 1991 Chevy Blazer with AC?
You will need to remove the transmission to replace the clutch slave.
How to Remove the Steering wheel From a Chevy Blazer 2001
how do you remove the dashboard of a 2002 Chevy blazer
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How do you replace fuel injectors on 2003 Chevy blazer?Read more: How_do_you_replace_fuel_injectors_on_2003_Chevy_blazer
It is attached to the fan.
Push the tensioner down and remove belt