Description & Operation: Clutches
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, 2003 Chevrolet Cab & Chassis Silverado, and 2002 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
Transmission uses 5 clutches (2 rotating and 3 stationary), which direct the flow of torque through the transmission. All range clutches are hydraulically actuated and spring-released, with automatic wear compensation. Clutches are cooled by the transmission fluid. The transmission electronic control module signals solenoid valves to apply and release the clutches, based on speed and power combinations and the range selected by the operator.