B252C 2018 GMC Sierra Code - Child Security Lock Switch Circuit
Quick Answer
The Body Control Module (BCM) monitors the voltage level in the child security door lockout switch signal circuit, when the switch is in the open position the voltage in the signal circuit will be equal to the B+ voltage level. Common causes include Faulty Child Security Lock Switch, Child Security Lock Switch harness is open or shorted, Child Security Lock Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B252C 2018 GMC Sierra indicates Child Security Lock Switch Circuit.
- Common causes
- Common causes include Faulty Child Security Lock Switch, Child Security Lock Switch harness is open or shorted, Child Security Lock Switch circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B252C 2018 GMC Sierra Description
What are the Possible Causes of the DTC B252C 2018 GMC Sierra?
- Faulty Child Security Lock Switch
- Child Security Lock Switch harness is open or shorted
- Child Security Lock Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B252C 2018 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B252C 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B252C 2018 GMC Sierra Code
1. What does OBDII code B252C mean on a 2018 GMC Sierra?
Code B252C indicates an issue with the Child Security Lock Switch Circuit, which controls the rear door child safety locks.
2. What are the symptoms of code B252C in a 2018 GMC Sierra?
Symptoms may include the child lock system not engaging or disengaging properly, warning lights on the dashboard, or unresponsive child lock switches.
3. What causes the B252C code to appear in a 2018 GMC Sierra?
Common causes include a faulty child lock switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. Can I still drive my 2018 GMC Sierra with code B252C?
Yes, you can drive the vehicle, but the child safety lock system may not function correctly, potentially compromising rear passenger safety.
5. How do I diagnose code B252C on a 2018 GMC Sierra?
Start by checking the child lock switch for proper operation, inspect the wiring and connectors for damage, and use a diagnostic scan tool to test the circuit and BCM.
6. How can I fix OBDII code B252C on a 2018 GMC Sierra?
Repairs may include replacing a faulty child lock switch, repairing damaged wiring or connectors, or reprogramming or replacing the BCM if necessary.
7. How much does it cost to fix code B252C in a 2018 GMC Sierra?
Repair costs can vary but typically range from $50 to $300, depending on whether the issue is with the switch, wiring, or BCM.
8. Can a weak battery cause code B252C on a 2018 GMC Sierra?
Yes, a weak or unstable battery can cause electrical issues, including false or intermittent B252C codes.
9. Do I need to reprogram the BCM after fixing code B252C in my 2018 GMC Sierra?
Reprogramming the BCM is only required if the module itself is replaced or if it has a software-related issue.
10. Can I reset code B252C on my 2018 GMC Sierra without fixing the issue?
You can clear the code temporarily with a diagnostic tool, but it will likely return if the underlying problem is not resolved.
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