Installation Procedure

If necessary, position the ECM bracket and install the bolts (1).

Fig 1: View Of ECM Bracket & Bolts
Courtesy of GENERAL MOTORS COMPANY

CAUTION: Refer to Fastener Caution .

Tighten

Tighten the bolts to 6 N.m (53 lb in).
Install the ECM onto the ECM bracket support tabs and snap the ECM into place under the retaining tab (1).

Fig 2: Identifying ECM Retaining Tab
Courtesy of GENERAL MOTORS COMPANY
Connect the engine wiring harness upper electrical connector (1) to the ECM.

Fig 3: View Of Engine Wiring Harness Clip & ECM Upper Electrical Connector
Courtesy of GENERAL MOTORS COMPANY
If the ECM bracket was also replaced, install the engine wiring harness clip (2) to the ECM bracket tab.
Connect the engine wiring harness middle and lower electrical connectors (1) to the ECM.

Fig 4: Identifying ECM Middle & Lower Electrical Connectors
Courtesy of GENERAL MOTORS COMPANY
Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
If a NEW ECM was installed, reprogram the ECM. Refer to K20 Engine Control Module: Programming and Setup .