Hombre XS Space Cab 2WD V6-4.3L (1998)
Engine Control Module: Service and Repair
Removal Procedure
Important: Disconnecting the VCM will not erase the CKP System Variation Learn as long as the ignition switch is in the OFF position.
CAUTION: Refer to Battery Disconnect C8ution in Cautions and Notices.
1. Disconnect the negative battery cable.
2. Pull the spring retainer up and over the rail of the VCM.
Slide the VCM out of the bracket at an angle.
3. Remove the connectors from the VCM.
4. Remove the VCM access cover.
5. Gently pinch the retaining clip and pull upward to remove the Electronic Spark Control module/PROM.
6. Set the Electronic Spark Control module/PROM aside carefully.
The Electronic Spark Control module/PROM will be reused in the replacement VCM.
7. Do not open the Electronic Spark Control module/PROM.
8. Remove the new VCM from the packaging. Check the service number in order to make sure the number matches the defective VCM's number.
Installation Procedure