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

Engine Control Module: Diagrams

Component Connector End Views

Engine Control Module (ECM) X1 (4.3L)

Engine Control Module (ECM) X1 (Diesel)

Engine Control Module (ECM) X1 (Gas Except 4.3L/LY6/HP2)

Engine Control Module (ECM) X1 (HP2)

Engine Control Module (ECM) X1 (LY6)

Engine Control Module (ECM) X2 (4.3L)

Engine Control Module (ECM) X2 (4.8L/LY6 or 6.2L with Y91)

Engine Control Module (ECM) X2 (5.3L/L76 or 6.2L Except Y91)

Engine Control Module (ECM) X2 (Diesel)

Engine Control Module (ECM) X2 (HP2)

Engine Control Module (ECM) X3 (HP2)