B3650 2015 GMC Sierra Code - High Beam Request Signal Circuit Performance Signal Invalid
Quick Answer
When the low beam headlamps are on and the turn signal/multifunction switch is placed in the high beam position, ground is applied to the Body Control Module (BCM) through the high beam signal circuit. Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction 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
- B3650 2015 GMC Sierra indicates High Beam Request Signal Circuit Performance Signal Invalid.
- Common causes
- Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction 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 B3650 2015 GMC Sierra Description
What are the Possible Causes of the DTC B3650 2015 GMC Sierra?
- Faulty Turn Signal/Multifunction Switch
- Turn Signal/Multifunction Switch harness is open or shorted
- Turn Signal/Multifunction Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3650 2015 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 B3650 2015 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 B3650 2015 GMC Sierra Code
1. What are the common symptoms associated with OBDII code B3650 in a 2015 GMC Sierra?
- Common symptoms include issues with the high beam headlights not functioning properly, the high beam indicator light staying on, or the high beams not turning off when switching to low beams.
2. What could cause the High Beam Request Signal Circuit Performance Signal Invalid code in a 2015 GMC Sierra?
- Possible causes include a faulty high beam switch, a wiring issue in the high beam circuit, a malfunctioning high beam relay, or a defective body control module.
3. How can I diagnose the High Beam Request Signal Circuit Performance Signal Invalid code in my 2015 GMC Sierra?
- To diagnose this issue, you may need to inspect the high beam switch, check the wiring for any damage or loose connections, test the high beam relay, and scan the body control module for any fault codes.
4. Can I continue driving my 2015 GMC Sierra with the B3650 OBDII code present?
- It is not recommended to drive your vehicle with this code present, as it may affect the proper functioning of the high beam headlights, compromising visibility and safety while driving at night.
5. How do I repair the High Beam Request Signal Circuit Performance Signal Invalid issue in my 2015 GMC Sierra?
- The repair process may involve replacing the high beam switch, repairing any damaged wiring, replacing the high beam relay, or reprogramming the body control module, depending on the root cause of the problem.
6. Will resetting the OBDII code B3650 in my 2015 GMC Sierra make it go away permanently?
- Resetting the code may clear it temporarily, but if the underlying issue causing the code is not addressed and fixed, the code is likely to reappear upon driving the vehicle again.
7. Is it possible to fix the B3650 code in a 2015 GMC Sierra by simply replacing the high beam bulbs?
- The B3650 code is related to the high beam signal circuit performance, so replacing the high beam bulbs alone is unlikely to resolve this specific issue.
8. How can I prevent the High Beam Request Signal Circuit Performance Signal Invalid code from reoccurring in my 2015 GMC Sierra?
- Regularly inspecting the high beam system for any signs of wear or damage, promptly addressing any issues with the high beam circuit, and following recommended maintenance schedules can help prevent this code from reoccurring.
9. Can extreme weather conditions contribute to triggering the B3650 code in a 2015 GMC Sierra?
- While extreme weather conditions may not directly trigger this specific code, they can potentially exacerbate existing electrical issues in the high beam system, leading to the activation of the B3650 code.
10. Is it recommended to seek professional help when dealing with the OBDII code B3650 in a 2015 GMC Sierra?
- Due to the complexity of diagnosing and repairing electrical issues like the B3650 code, seeking professional assistance from a qualified mechanic or dealership is advisable to ensure proper and accurate resolution of the problem.
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