Control Valve Module: Notes
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.
CAUTION:
Ensure parts (springs, etc.) are not interchanged from their original locations to avoid transmission damage. If available, use Valve Tray Set (J-33163) or equivalent, to hold parts in correct order as removed. If valve tray set is not available, carefully tag each part as removed.