Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Body Control Module | Behind lower right side of dash. See Figure. |
| Central Sequential Fuel Injection (Central SFI) Connector (4.3L VIN X) | At top of engine. See Figure. |
| Chime Module | Behind center of dash. See Figure. |
| Cruise Control Module (CCM) | Near brake fluid reservoir. See Figure. |
| Electronic Brake Control Module (EBCM) | On left frame rail, near center of vehicle. See Figure. |
| Electronic Control Module (ECM) (6.6L VIN W) | Left side of engine compartment. See Figure. |
| Fuel Injector Control Module (CNG) | On left side of radiator support. See Figure. |
| Glow Plug Control Module (GPCM) (6.6L VIN W) | Left rear of engine. See Figure. |
| Ignition Coil/Module 1 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top left of engine. See Figure. |
| Ignition Coil/Module 2 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top right of engine. See Figure. |
| Ignition Coil/Module 3 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top left of engine. See Figure. |
| Ignition Coil/Module 4 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top right of engine. See Figure. |
| Ignition Coil/Module 5 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top left of engine. See Figure. |
| Ignition Coil/Module 6 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top right of engine. See Figure. |
| Ignition Coil/Module 7 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top left of engine. See Figure. |
| Ignition Coil/Module 8 Connector (4.8L VIN V, 5.3L VIN T & 6.0L VIN U) | At top right of engine. See Figure. |
| Ignition Control Module (ICM) Connector (4.3L VIN X) | On top right side of engine, at ignition coil. See Figure. |
| Inflatable Restraint I/P Module | Behind right side of dash. See Figure. |
| Inflatable Restraint I/P Module Connector | Behind right side of dash. See Figure. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) | Under left front seat. See Figure. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) Connector | Under left front seat. See Figure. |
| Inflatable Restraint Steering Wheel Module | At center of steering wheel. See Figure. |
| Intake Air Heater (IAH) Module (6.6L VIN W) | Between the intake manifold tube and the air cooler outlet duct. See Figure. |
| Powertrain Control Module (PCM) | In engine compartment, on left inner fender. See Figure. |
| Throttle Actuator Control (TAC) Module | At left rear of engine compartment. See Figure. |
| Transmission Control Module (TCM) (6.6L VIN W) | On right frame rail. See Figure. |
| Turn Signal/Hazard Flasher Module connector | Behind left center of dash. See Figure. |
| Vehicle Communication Interface Module (VICM) (UE1) | Below steering column. See Figure. |