Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| ABS Diode Module | Under left side of dash. | |
| ABS Module | Mounted on side of brake master cylinder. | |
| Audio Alarm Module | On convenience center. | |
| Coolant Level Sensor Module | Behind center of dash. | |
| Cruise Control Module | Under left side of dash. See Figure. | |
| Daytime Running Lights (DRL) Module | Behind left side of dash, taped to panel wiring harness. | |
| Engine Control Module (ECM) (5.0L & 5.7L M/T Heavy Duty) | Behind right side of dash, near blower motor. See Figure. | |
| Glow Plug Controller (6.5L) | On left rear of intake manifold. | |
| Fuel Module | ||
| 5.7L Heavy Duty | Behind right side of dash, above blower motor. See Figure. | |
| 7.4L | Behind left side of dash, behind brake booster. | |
| Ignition Control Module | On center rear of engine, near ignition distributor. | |
| Knock Sensor Module (5.0L/5.7L M/T) | On top right of engine, on valve cover. See Figure. | |
| Powertrain Control Module (PCM) | ||
| 4.3L California | Behind right side of dash, near blower motor. See Figure. | |
| 4.3L W/4L60E A/T | Behind right side of dash, near blower motor. See Figure. | |
| 4.3L W/4L80E A/T | Behind right side of dash, near blower motor. See Figure. | |
| 4.3L M/T | Behind right side of dash, near blower motor. See Figure. | |
| 5.0L & 5.7L W/4L60E A/T | Behind right side of dash, near blower motor. See Figure. | |
| 5.7L W/4L80E A/T | Behind right side of dash, near blower motor. See Figure. | |
| 6.5L Diesel | Behind right side of dash, near blower motor. See Figure. | |
| 7.4L A/T | Behind right side of dash, near blower motor. See Figure. | |
| 7.4L M/T | Behind right side of dash, near blower motor. See Figure. | |
| Radio Receiver Module | Behind center of dash. | |
| Transmission Control Module (TCM) | Behind right side of dash. | |
| Wiper Motor Module | ||
| Front | On firewall, behind wiper motor. | |
| Rear | On lower inner center of rear window. | |