Control Units
CONTROL UNITS LOCATION
| Component | Location | |
|---|---|---|
| ABS Module | ||
| RWAL | Below master cylinder. | |
| 4WAL | On left inner fender panel. | |
| Audio Alarm Module | On convenience center. | |
| Cruise Control Module | On left side of steering column. | |
| Daytime Running Lights (DRL) Module | Above fuse block. | |
| Digital Radio Adapter Controller (DRAC) (4.3L Turbo) | Behind right side of dash. | |
| Diode Module (4.3L) | On wiring harness above fuse block. | |
| Elapsed Timer Module (2.8L) | Under right side of dash, next to ECM. See Figure . | |
| Elec. Shift Transfer Case Module | Near ECM/PCM | |
| Electronic Control Module (ECM) | ||
| 2.5L (VIN A) | Behind right side of dash. See Figure . | |
| 2.8L (VIN R) | Behind right side of dash. See Figure . | |
| 4.3L (VIN Z - Turbo) | Behind right side of dash. See Figure . | |
| Ignition Control Module (IC) | Inside distributor assembly. | |
| Intake Manifold Tuning Valve Controller (4.3L - VIN W) | On top of intake manifold. | |
| Keyless Entry Module | Under Center Console. | |
| Knock Sensor Control Module | ||
| 2.8L (VIN R) | Near center of firewall. See Figure . | |
| 4.3L (VIN Z - A/T Non-Turbo) | Near center of firewall. See Figure . | |
| Powertrain Control Module (PCM) | ||
| 4.3L (VIN W) | Behind right side of dash. See Figure . | |
| 4.3L (VIN Z - A/T Non-Turbo) | Behind right side of dash. See Figure . | |
| Vehicle Control Module (VCM) (4.3L VIN Z - M/T Non-Turbo) | Behind right side of dash. See Figure . | |
| Windshield Wiper Module | On center of firewall. | |