AutoCodes – GMC – B0529 GMC

B0529 GMC Code - Right Turn Signal Circuit Open

Quick Answer

When the Body Control Module (BCM) receives a right turn signal ON command from the turn signal switch, the BCM will apply voltage to the right rear stop/turn lamp supply voltage circuit and right turn signal lamps supply voltage circuit. Common causes include Faulty Right Turn Signal Lamp Bulb, Right Turn Signal Lamp Bulb harness is open or shorted, Right 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: B0529 GMC indicates Right Turn Signal Circuit Open.
Common causes: Common causes include Faulty Right Turn Signal Lamp Bulb, Right Turn Signal Lamp Bulb harness is open or shorted, Right 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.

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Code Popularity 1,283

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0529 GMC Description

When the Body Control Module (BCM) receives a right turn signal ON command from the turn signal switch, the BCM will apply voltage to the right rear stop/turn lamp supply voltage circuit and right turn signal lamps supply voltage circuit. The turn signal flasher is integrated within the BCM and will flash both circuits simultaneously. The turn signal indicator is also illuminated utilizing the right rear stop/turn lamp supply voltage circuit. The Diagnostic Trouble Code (DTC) is set when the right front and/or right rear turn signals will not operate or will remain always ON.

OBDII Code B0529 GMC - Right Turn Signal Circuit Open - AutoCodes.com — B0529 GMC Code - Right Turn Signal Circuit Open

What does this mean?

What are the Possible Causes of the DTC B0529 GMC?

Faulty Right Turn Signal Lamp Bulb
Right Turn Signal Lamp Bulb harness is open or shorted
Right Turn Signal Lamp Bulb circuit poor electrical connection
Faulty Instrument Panel Cluster (IPC)
Faulty Body Control Module (BCM)

How to Fix the DTC B0529 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 B0529 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0529 GMC Code

1. What does the OBDII code B0529 on a GMC mean?

B0529 indicates an open circuit in the right turn signal circuit, meaning thereâ€™s a disruption preventing the signal from functioning properly.

2. What are the common symptoms of B0529 on a GMC vehicle?

Symptoms include the right turn signal not working, rapid flashing of the turn signal indicator, or the turn signal indicator staying on without blinking.

3. What causes the B0529 code to appear?

Common causes include a faulty turn signal bulb, damaged wiring or connectors, a malfunctioning turn signal switch, or a defective body control module (BCM).

4. Can a bad bulb cause the B0529 code?

Yes, a burned-out or faulty right turn signal bulb is a common cause of this code.

5. How can I diagnose the B0529 code on my GMC?

Check the right turn signal bulb, inspect the wiring and connectors for damage or corrosion, and test the turn signal switch and BCM for proper function.

6. Can I drive with the B0529 code on my GMC?

Although you can drive, itâ€™s unsafe because the right turn signal may not function, potentially causing confusion or accidents when signaling turns.

7. How do I fix the B0529 code on a GMC?

Replace any faulty bulbs, repair damaged wiring or connectors, and if necessary, replace the turn signal switch or have the BCM reprogrammed or replaced.

8. How much does it cost to fix the B0529 code on a GMC?

Costs vary depending on the issue, but replacing a bulb may cost $10â€“$50, while wiring repairs or BCM replacement could cost hundreds of dollars.

9. Can a faulty BCM trigger the B0529 code?

Yes, a malfunctioning body control module can cause the code if it fails to send or receive the proper signals for the right turn indicator.

10. How can I prevent the B0529 code from recurring?

Regularly inspect and maintain your vehicleâ€™s lighting system, replace bulbs promptly, and ensure wiring and connectors are free of corrosion or damage.