Park Brake Apply Lever
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Multiplies and uses input force from the park brake cable/clevis to expand park brake shoes toward the friction surface of the park brake drum.