B0533 GMC Code - Left Turn Signal Circuit High
Quick Answer
When the Body Control Module (BCM) receives a left turn signal ON command from the turn signal switch, the BCM will apply voltage to the left rear stop/turn lamp supply voltage circuit and left turn signal lamps supply voltage circuit. Common causes include Faulty Left Turn Signal Lamp Bulb, Left Turn Signal Lamp Bulb harness is open or shorted, Left Turn Signal Lamp Bulb circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B0533 GMC indicates Left Turn Signal Circuit High.
- Common causes
- Common causes include Faulty Left Turn Signal Lamp Bulb, Left Turn Signal Lamp Bulb harness is open or shorted, Left Turn Signal Lamp Bulb circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B0533 GMC Description
What are the Possible Causes of the DTC B0533 GMC?
- Faulty Left Turn Signal Lamp Bulb
- Left Turn Signal Lamp Bulb harness is open or shorted
- Left Turn Signal Lamp Bulb circuit poor electrical connection
- Faulty Instrument Panel Cluster (IPC)
- Faulty Body Control Module (BCM)
How to Fix the DTC B0533 GMC?
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 B0533 GMC 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 B0533 GMC Code
1. What are the common symptoms of OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- The common symptoms include the left turn signal staying on continuously without blinking, the turn signal light not functioning properly, or a dashboard indicator showing a fault with the left turn signal circuit.
2. What are the possible causes of OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- The code may be triggered by a faulty turn signal switch, a damaged wiring harness, a malfunctioning turn signal relay, or a problem with the left turn signal bulb or socket.
3. How can I diagnose OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- You can diagnose the code by visually inspecting the left turn signal components for any visible damage, checking the wiring for continuity and proper connections, and using a multimeter to test the voltage at different points in the circuit.
4. What are the repair options for OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- Depending on the underlying cause, the repair options may include replacing the turn signal switch, repairing or replacing damaged wiring, replacing the turn signal relay, or fixing any issues with the turn signal bulb or socket.
5. Can I drive my vehicle with OBDII code B0533 GMC (Left Turn Signal Circuit High) without fixing it immediately?
- It is not recommended to drive with this code unresolved as it can affect the safety of your vehicle by potentially causing confusion for other drivers on the road. Promptly addressing the issue is advisable.
6. Will OBDII code B0533 GMC (Left Turn Signal Circuit High) cause my vehicle to fail a state inspection?
- The specific regulations vary by location, but in many cases, a malfunctioning turn signal can result in a failed state inspection. It's best to address the issue before undergoing an inspection.
7. Are there any DIY repair tips for OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- DIY repair tips include checking and replacing the turn signal bulb, inspecting and repairing damaged wiring if visible, and ensuring all connections in the circuit are secure and free of corrosion.
8. Can extreme weather conditions contribute to triggering OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- Yes, extreme weather conditions like heavy rain, snow, or exposure to high temperatures can potentially damage the turn signal components and wiring, leading to the triggering of this code.
9. Is resetting the vehicle's computer necessary after fixing OBDII code B0533 GMC (Left Turn Signal Circuit High)?
- It is recommended to reset the vehicle's computer after fixing the issue to clear the error code and ensure proper functioning of the turn signal circuit. This can be done with an OBDII scanner tool.
10. What is the typical cost to repair OBDII code B0533 GMC (Left Turn Signal Circuit High) at a professional auto repair shop?
- The cost can vary depending on the specific cause of the issue and the labor rates in your area. Repairs for this code may range from $100 to $300 or more, including parts and labor.
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