B1820 2017 GMC Sierra Code - Driver Seat Recline Rearward Switch Circuit
Quick Answer
The B1820 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the driver seat recline rearward switch circuit. Common causes include Faulty recline rearward switch, Damaged wiring or connectors in the circuit, Corrosion or moisture in the electrical connections. 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
- B1820 2017 GMC Sierra indicates Driver Seat Recline Rearward Switch Circuit.
- Common causes
- Common causes include Faulty recline rearward switch, Damaged wiring or connectors in the circuit, Corrosion or moisture in the electrical connections.
- 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.
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Code B1820 2017 GMC Sierra Description
The B1820 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the driver seat recline rearward switch circuit. This code indicates that there is a malfunction in the circuit responsible for controlling the driver's seat recline movement in the rearward direction. The driver seat in modern vehicles is equipped with various switches that allow the driver to adjust the seat position for comfort while driving. The recline rearward switch circuit is a part of this system that enables the driver to move the seat back.
Common Causes of B1820 2017 GMC Sierra
- Faulty recline rearward switch.
- Damaged wiring or connectors in the circuit.
- Corrosion or moisture in the electrical connections.
- Defective body control module or seat control module.
Symptoms of B1820 2017 GMC Sierra
- Inability to adjust the driver seat to recline rearward.
- Unresponsive or erratic movement of the driver seat when using the recline rearward switch.
- Illumination of the seat adjustment control panel warning light.
- Audible clicking or buzzing noises when attempting to adjust the seat position.
How to Fix B1820 2017 GMC Sierra
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the DTC and pinpoint the faulty component.
- Inspect the wiring and connectors in the recline rearward switch circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the functionality of the recline rearward switch itself. If faulty, replace the switch with a new one.
- Check the body control module or seat control module for any malfunctions. Replace if necessary.
- Clear the DTC from the vehicle's memory using the diagnostic scanner after completing the repairs.
Cost to Fix B1820 2017 GMC Sierra
The cost of repairing a B1820 DTC related to the driver seat recline rearward switch circuit in a 2017 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor. On average, the repair costs for this type of issue can range from $150 to $400. However, it's important to note that labor rates at auto repair shops can vary widely, typically ranging from $80 to $150 per hour. Additionally, the cost of parts such as a new switch or control module will also contribute to the overall repair bill. It's recommended to consult with a professional mechanic or auto repair shop for a more accurate cost estimate based on the specific circumstances of the vehicle.
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Frequently Asked Questions about B1820 2017 GMC Sierra Code
1. What does OBDII code B1820 mean on a 2017 GMC Sierra?
B1820 indicates an issue with the driver seat recline rearward switch circuit, meaning the system detected a malfunction in this part of the seat adjustment controls.
2. What are the common symptoms of code B1820 in a 2017 GMC Sierra?
The driver seat may not recline backward properly, the switch may feel unresponsive, or you could notice limited or no movement when operating the recline function.
3. What causes the B1820 code to appear on a GMC Sierra?
Common causes include a faulty seat recline switch, damaged wiring or connectors in the circuit, or a malfunctioning seat control module.
4. Can a blown fuse cause the B1820 code?
It’s possible if the recline switch is on the same circuit as a blown fuse. However, the issue is more likely related to the switch, wiring, or control module.
5. How do I diagnose the B1820 code on my 2017 GMC Sierra?
Start by inspecting the seat recline switch, wiring, and connectors for damage or wear. Use a multimeter to test for continuity in the circuit, and check the seat control module for proper operation.
6. Can I still drive my GMC Sierra with the B1820 code?
Yes, the code does not affect drivability, but you may experience limited or no functionality of the driver seat recline feature.
7. How do you fix the B1820 code on a 2017 GMC Sierra?
Repairs may include replacing the driver seat recline switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the seat control module.
8. How much does it cost to fix the B1820 code?
Repair costs vary depending on the issue. Replacing the switch may cost $50–$150 in parts, while more extensive repairs involving wiring or the control module could range from $200–$500 or more.
9. Can I reset the B1820 code without repairing the issue?
You can clear the code using an OBDII scanner, but it will likely return unless the underlying issue is fixed.
10. Is the B1820 code covered under warranty for a 2017 GMC Sierra?
It depends on your vehicle’s warranty coverage. If the issue is related to a defect in materials or workmanship and the warranty is still valid, it may be covered.
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