Connector Identification
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.
Fig 20: Identifying Transmission In-Line 20-Way Connector Terminals - Transmission Side (2001 - 1 Of 2)
Fig 21: Identifying Transmission In-Line 20-Way Connector Terminals - Transmission Side (2001 - 2 Of 2)