Sierra 2500 2WD V8-6.6L DSL Turbo (2007)
Engine Control Module: Locations
Engine Controls Component Views
Engine Harness Jumper to Engine POA Harness
1 - Battery - Right
2 - Fuse Holder - Underhood
3 - X127
4 - X108
5 - X107
6 - X123 (PTO)
7 - Fuse Block - Underhood
8 - X109
9 - Battery - Left (6A6/TP2)
10 - Engine Control Module (ECM)
11 - Transmission Control Module (TCM)
