Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
2013 GMC Yukon Hybrid, 4WDSECTION Installation Procedure
- Set the bottom of ECM into the ECM bracket tab (2).
- Push the ECM (3) in securing the ECM to the bracket.
- Position the engine wiring harness electrical connectors and engage the retainers securing the connectors (2) to the ECM (1).
- Install the under hood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement .
- Install the battery and battery tray. Refer to Battery Tray Replacement .
- Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
- If a NEW ECM was installed, perform the service programing system (SPS). Refer to Control Module References .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.