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.
2022 GMC Hummer EVFACTORY OEM SERVICE PROCEDURE
Removal Procedure
- Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
- NOTE:
Left side shown, right side similar.
Rear Wheelhouse Liner- Right Side (3) - Remove - Rear Wheelhouse Liner Replacement
Disconnect the electrical connectors. (1)
Hybrid Powertrain Control Module 2 Nut (1) - Remove [4x]
- Battery Energy Control Module 2 (2) - Remove
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.