Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Electrical Diagrams
DATA COMMUNICATION SCHEMATICS Low Speed GMLAN
High Speed GMLAN
Powertrain Expansion Bus (RPO LGH)
Accessory Wakeup
Communications Enable
RPO Codes VIN L, RPO LGH - Engine Diesel, 8 Cylinder, 6.6L, DI, V8, Turbo, Duramax
VIN 6, RPO LMM - Engine Diesel, 8 Cylinder, 6.6L, DPI, V8, Duramax
