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.
2018 Chevrolet Suburban 3500 HD LSFACTORY OEM SERVICE PROCEDURE
Removal Procedure
- Remove Engine Control Module. Refer to Engine Control Module Replacement
- Remove Auxiliary Battery. Refer to Auxiliary Battery Replacement (9C1)
- Remove the left front wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Left Side (Chevrolet)
- Remove Engine Control Module Bracket Bolt (1)
- Remove Battery Tray Bolts (1) (Qty: 2)
- Remove Engine Control Module Bracket (2)
Factory Service Tools
Use the Manual With the Right Hardware
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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.