I know a shalow pan is listed, but I don't believe GM used one on full size truck after 1999. The 4L80E is used on 3/4 ton. I can't remember if it was ever used on any 1500 HDs. Trans used on half tons are 4L60E. 4L65E and starting in 2006 4L70E for the Vortex max 6 liters. Of course we now have the 6 speeds.
Fluid Capacities
Automatic Transmission, 4L80E Initial Fill..........7.7 quarts[2]
Automatic Transmission, 4L60, 60E Initial Fill..........5.0 quarts[2]
Automatic Transmission, Total Fill
4 speed 4L60E..........11.0 quarts
4 speed 4L80E..........14.0 quarts
2. With the ENG at operating TEMP, shift TRANS through all gears. Let ENG slow idle in PARK for at least 3 minutes. Check fluid level and add fluid as needed. Do not overfill.
Wix Trans Filter.....58847 [1]
Wix Trans Filter.....58608 [2]
Wix Trans Filter.....58836 [3]
Wix Trans Filter.....58904 [4]
Wix Trans Filter.....58917 [5]
1. 4L60E - Deep Pan
2. 4L80E - Deep Pan
3. 4L80E - Includes pan gasket
4. 4L60E - Shallow Pan
5. 4L80E - Shallow Pan - Pan Gasket not included - If Pan Gasket required, use 58836