Where is the intake manifold runner control on a 2002 Chevy blazer?

The intake manifold runner control (IMRC) on a 2002 Chevy Blazer is located on the intake manifold itself. It typically consists of a set of valves that modulate airflow based on engine speed and load to optimize performance. To access it, you'll generally need to remove the engine cover and possibly some surrounding components for better visibility and reach. Always refer to a repair manual for detailed instructions specific to your vehicle.