Section 63 (Cruise Control System - Gasoline (G Series)): Description
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1997 GMC Savana Special, 1997 GMC Savana Camper Special, 1997 GMC Savana, 1997 Chevrolet RV Cutaway, and 1997 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Cruise control system components include: Powertrain Control Module (PCM) or Vehicle Control Module (VCM), cruise control module (electronic controller and electric stepper motor combined), cruise control switch, vehicle speed sensor, vehicle speed sensor buffer, and brake and clutch release switches.