P2 Planetary Module & Main Shaft
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.
Remove main shaft, P2 sun gear, and sun gear spacer as an assembly. See Fig 1. Remove sun gear spacer and P2 sun gear from main shaft. Remove P2 planetary module and thrust bearing.