B1820 2018 Chevrolet Silverado Code - Driver Seat Recline Rearward Switch Circuit
Quick Answer
The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster 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
- B1820 2018 Chevrolet Silverado indicates Driver Seat Recline Rearward Switch Circuit.
- Common causes
- Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster 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 B1820 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC B1820 2018 Chevrolet Silverado?
- Faulty Driver Seat Adjuster Switch
- Driver Seat Adjuster Switch harness is open or shorted
- Driver Seat Adjuster Switch circuit poor electrical connection
- Faulty Seat Memory Control Module
How to Fix the DTC B1820 2018 Chevrolet Silverado?
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 B1820 2018 Chevrolet Silverado 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 B1820 2018 Chevrolet Silverado Code
1. What does the OBDII code B1820 mean for a 2018 Chevrolet Silverado?
The code B1820 indicates an issue with the driver seat recline rearward switch circuit, such as an open, short, or malfunction in the electrical components.
2. What are the common symptoms of code B1820 in a 2018 Chevrolet Silverado?
Symptoms may include the driver seat recline function not working properly, no response when pressing the recline switch, or intermittent seat movement.
3. What causes the B1820 code in a 2018 Chevrolet Silverado?
Common causes include a faulty seat recline switch, damaged wiring or connectors in the circuit, or a malfunctioning seat control module.
4. How can I diagnose the B1820 code in my 2018 Chevrolet Silverado?
Start by inspecting the seat recline switch, wiring, and connectors for damage. Use a multimeter to test circuit continuity and check for any shorts or opens.
5. Can I still drive my 2018 Chevrolet Silverado with the B1820 code?
Yes, the vehicle is still drivable, but the driver seat recline function may not work, which could affect comfort and adjustability.
6. What tools are needed to fix the B1820 code?
You may need a multimeter, a scan tool to clear the code, and basic hand tools to access and inspect the seat recline switch and wiring.
7. How do I fix the B1820 code in my 2018 Chevrolet Silverado?
Repair or replace any damaged wiring or connectors, replace a faulty recline switch if necessary, or reprogram/replace the seat control module if it’s defective.
8. How much does it cost to repair the B1820 code on a 2018 Chevrolet Silverado?
Repair costs vary depending on the issue but may range from $50 for simple wiring repairs to $300 or more for switch or module replacement.
9. Can a faulty seat recline switch cause the B1820 code?
Yes, a defective seat recline switch is one of the most common causes of this code.
10. Do I need to clear the B1820 code after making repairs?
Yes, use a scan tool to clear the code after completing repairs and test the seat recline function to ensure the issue is resolved.
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