chevrolet Workshop Repair Guides

Chevrolet Workshop Service and Repair Manuals

Idle Speed/Throttle Actuator - Electronic > < Engine Control Module (ECM) Replacement|Page 2564
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Engine Control Module: Service and Repair
Throttle Body Fuel Injection

When replacing a production ECM with a service ECM, transfer the broadcast code and production number from the production unit to the service unit.
Also, during replacement, the PROM, CALPACK and if equipped, the MEMCAL must be removed from the ECM being replaced and transferred to the
new unit. Refer to PROMCALPAK, and MEMCAL for procedures.

1.

Disconnect battery ground cable.

2.

Then disconnect two computer electrical connectors.

3.

Remove computer mounting hardware.

4.

Remove computer from passenger compartment.

5.

Reverse procedure to install.

Idle Speed/Throttle Actuator - Electronic > < Engine Control Module (ECM) Replacement|Page 2564