Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Body Control Module (BCM) | Behind lower right side of dash. See Figure. |
| Central Sequential Fuel Injection (Central SFI) Connector (4.3L) (1) | At top of engine. See Figure. |
| Coolant Heater Control (1) | On coolant heater assembly. 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. |
| Electronic Control Module (ECM) | Left side of engine compartment. See Figure. |
| Fuel Pump Flow Control Module (5.3L) | At rear of vehicle, attached to left rear frame rail. |
| Glow Plug Control Module (GPCM) (6.6L) (5) | Left rear of engine. See Figure. |
| HVAC Control Processor - Auxiliary | Center front of headliner. See Figure. |
| Ignition Coil/Module 1 Connector (4.8L, 5.3L & 6.0L) (13) | At top left of engine. See Figure. |
| Ignition Coil/Module 2 Connector (4.8L, 5.3L & 6.0L) (5) | At top right of engine. See Figure. |
| Ignition Coil/Module 3 Connector (4.8L, 5.3L & 6.0L) (11) | At top left of engine. See Figure. |
| Ignition Coil/Module 4 Connector (4.8L, 5.3L & 6.0L) (6) | At top right of engine. See Figure. |
| Ignition Coil/Module 5 Connector (4.8L, 5.3L & 6.0L) (9) | At top left of engine. See Figure. |
| Ignition Coil/Module 6 Connector (4.8L, 5.3L & 6.0L) (7) | At top right of engine. See Figure. |
| Ignition Coil/Module 7 Connector (4.8L, 5.3L & 6.0L) (8) | At top left of engine. See Figure. |
| Ignition Coil/Module 8 Connector (4.8L, 5.3L & 6.0L) (9) | At top right of engine. See Figure. |
| Ignition Control Module (ICM) Connector (3) | 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 (2) | Behind right side of dash. See Figure. |
| Inflatable Restraint Roof Rail Module - Left Front | Left side of headliner. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) | Under left front seat. See Figure. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) Connector (13) | Under left front seat. See Figure. |
| Intake Air Heater (IAH) Module (13) | Between the intake manifold tube and the air cooler outlet duct. See Figure. |
| Powertrain Control Module (PCM) (3) | In engine compartment, on left inner fender. See Figure. |
| Theft Deterrent Module (TDM) | In steering column, near ignition key cylinder housing. |
| Throttle Actuator Control (TAC) Module | At left rear of engine compartment. See Figure. |
| Transmission Control Module (TCM) (6.6L) | Left front corner of engine compartment. See Figure. |
| Turn Signal/Hazard Flasher Module | Behind left center of dash. See Figure. |
| Vehicle Communication Interface Module (VCIM) (8) | Below steering column. See Figure. |