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 MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 69 (KEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONS)
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Section 69 (Keyless Entry System And Remote Functions)
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Section 69 (Keyless Entry System And Remote Functions)
WARNING: This page is about a different car, the 2018 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic Wiring Diagrams
- Diagnostic Information and Procedures
- DTC B305D
- DTC B3101
- DTC B3105
- DTC B3106
- DTC B3109-B3113
- DTC B310D-B310F
- DTC B3119
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3120
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3121
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3122
- DTC B3123
- DTC B3124
- Symptoms - Remote Functions
- No Remote Detected
- Keyless Entry System Malfunction
- Remote Vehicle Start Malfunction
- Repair Instructions
- Low Frequency Instrument Panel Antenna Replacement
- Low Frequency Console Antenna Replacement
- Low Frequency Rear Compartment Antenna Replacement
- Low Frequency Rear Bumper Antenna Replacement
- Keyless Entry Control Module Replacement
- Keyless Entry Control Module Bracket Replacement
- Remote Control Door Lock Receiver Replacement (4NB)
- Remote Control Door Lock Receiver Replacement (5HB)
- Remote Control Door Lock and Theft Deterrent Transmitter Programming
- Description and Operation
- Keyless Entry System Description and Operation
- Notes
- Keyless Entry Transmitters
- OnStar® Remote Link (if equipped)
- Body Control Module (BCM)
- Remote Control Door Lock Receiver
- Unlock Doors
- Lock All Doors
- Trunk Release, if equipped
- Power Liftgate, if equipped
- Vehicle Locator/Panic Alarm
- Remote Vehicle Start, if equipped
- Enable/Disable Remote Vehicle Start
- Hood Ajar Switch
- Remote Vehicle Start Circuit Description
- Keyless Entry Personalization
- Keyless Entry System Description and Operation
- Special Tools and Equipment
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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.