Where is the choke on a 1995 Chevrolet Blazer?

A 1995 Chevrolet Blazer, assuming it has a carburetor (less likely, but possible depending on the engine), would have a choke on the carburetor itself. It's usually a lever or a cable connected to a butterfly valve within the carburetor.

However, it's far more likely your 1995 Blazer has electronic fuel injection (EFI). EFI systems don't have a manually operated choke. The engine's computer controls the fuel mixture for cold starting.

If your Blazer is having cold-start problems, the issue is likely not a choke but rather something else within the fuel injection system, like a failing temperature sensor, a problem with the fuel pump, or a malfunctioning mass airflow sensor (MAF).