Colorado 4WD V8-5.3L (2010)
5. Disengage the integral CPA retainers on the engine wiring harness electrical connectors.
6. Disconnect the engine wiring harness electrical connectors (2) from the ECM.
7. Lift up the ECM bracket tabs (2) and tilt the ECM (1) towards the front of the vehicle, removing the ECM (1).
Installation Procedure