Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| ABS Control Module | On left side of engine compartment. | |
| Audio Alarm Module | Behind dash, below fuse block. | |
| Cruise Control Module | Behind instrument panel, near steering column. | |
| Digital Ratio Adaptor Controller (DRAC) | On parking brake lever assembly. | |
| Electronic Control Module (ECM) | ||
| 4.3L VIN Z | Under driver's seat. See Figure. | |
| 5.0L VIN H & 5.7L VIN K | Under driver's seat. See Figure. | |
| 7.4L VIN N | Under driver's seat. See Figure. | |
| Elec. Spark Control (ESC) Module | ||
| 4.3L VIN Z | Under driver's seat. See Figure. | |
| 5.0L VIN H & 5.7L VIN K | Under driver's seat. See Figure. | |
| 7.4L VIN N | Under driver's seat. See Figure. | |
| Glow Plug Controller (Diesel) | ||
| Controls & Relays | On left rear of intake manifold. See Figure. | |
| 6.2L Diesel | On left rear of intake manifold. See Figure. | |
| Hot Fuel Module | ||
| 5.0L VIN H & 5.7L VIN K | Under driver's seat. See Figure. | |
| 7.4L VIN N | Under driver's seat. See Figure. | |
| Hydro-Boost Elec. Delay Module | Behind left side of instrument panel. | |
| Light Driver Module (Diesel) | Under right side of dash. | |
| Power Door Lock Delay Module | Behind dash, to right of steering column. | |
| Pulse Wiper Control Module | Taped to harness, at left side of steering column. | |