Installation Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: ECM And Bracket

Courtesy of GENERAL MOTORS CORP.

Install the bottom ECM tabs into the bracket.
Push the ECM in securing the ECM to the bracket.

Fig 2: Engine Control Module (ECM) Components

Courtesy of GENERAL MOTORS CORP.

Position the engine wiring harness lower electrical connector and engage the retainer (3) securing the lower connector (4) to the ECM.
Position the engine wiring harness upper electrical connector and engage the retainer (2) securing the upper connector (1) to the ECM.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
If a NEW ECM was installed, program the ECM. Refer to Control Module References .