The 2002 Express van with an L31 5.7L engine had a 4L80E as an option. This should be in the database somewhere. If you can't find it, I can upload it.
I can't find this. I'm needing a 4L80e equipped 12216125 OS
-John
1991 RCSB 2WD Sierra LQ4 swap, 220/224 112 cam, Twin VSR 6766 turbos
4L80e w/shift kit, PY 3600, and 3.73 gears.
22 PSI and E85, 4300# with driver. 9.7@138, 1.47 sixty