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.
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HOMESERVICE MANUALSCHEVROLET2018SUBURBAN FL, RWD, GAS/ETHANOLREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSKEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONSDESCRIPTION AND OPERATIONKEYLESS ENTRY SYSTEM DESCRIPTION AND OPERATION (WITH ATH)KEYLESS ENTRY CONTROL MODULE
2018 Chevrolet Suburban FL, RWD, Gas/Ethanol
Keyless Entry Control Module
2018 Chevrolet Suburban FL, RWD, Gas/EthanolSECTION Keyless Entry Control Module
The keyless entry control module is a multi-function module which performs the following keyless entry system functions:
- Activating vehicle antennas for passive keyless entry functions
- Activating vehicle antennas for keyless start functions
- Backup control for the ECM accessory wakeup and the run/crank relay
- If equipped, controls the electronic steering column lock
- Receiver of the exterior door handle switch inputs and door open switch (not the door ajar switch)
- Ignition mode switch monitoring
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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.