Vehicle: 1995 C2500 (8600gvwr) with 4WAL.
Issue: Air trapped in ABS module, cannot bleed via scanner (Snap-On Solus Pro with ver. 17.2 software), DTCs present, can't bleed with DTC's present, scanner displays 0 codes, jumping terminals A & H displays codes.
Codes:
Code 68 - Locked motor or...