B1820 2014 GMC Sierra 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 2014 GMC Sierra 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 2014 GMC Sierra Description
What are the Possible Causes of the DTC B1820 2014 GMC Sierra?
- 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 2014 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 B1820 2014 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 B1820 2014 GMC Sierra Code
1. What does the OBDII code B1820 mean on a 2014 GMC Sierra?
The B1820 code indicates an issue with the driver seat recline rearward switch circuit, which controls the seat's ability to recline backward.
2. What are the common symptoms of the B1820 code?
Symptoms include the driver seat not reclining, limited or no movement in the recline position, or unresponsiveness when operating the rearward switch.
3. What causes the B1820 code to appear?
Common causes include a faulty recline rearward switch, damaged wiring or connectors, or an issue with the seat control module.
4. How can I diagnose the B1820 code?
Start by visually inspecting the switch, wiring, and connectors for damage or corrosion. Use a diagnostic scanner to confirm the code and test the switch with a multimeter to verify proper operation.
5. Can I still drive my 2014 GMC Sierra with the B1820 code?
Yes, the vehicle is still drivable, but you may experience discomfort or limited adjustability if the driver seat cannot recline properly.
6. How do I fix the B1820 code?
Repairs may involve replacing the recline rearward switch, repairing damaged wiring, cleaning corroded connectors, or reprogramming the seat control module if necessary.
7. How much does it cost to repair the B1820 code?
Repair costs can vary, but replacing the recline switch typically costs $50-$150 for parts, plus additional labor charges if done by a professional.
8. Can a blown fuse cause the B1820 code?
While uncommon, a blown fuse in the seat control circuit could potentially cause the code. Check the fuse box for any blown fuses related to the seat controls.
9. Does the B1820 code affect other seat functions?
The code specifically relates to the rearward recline function, but in some cases, it could indicate a broader issue with the seat control module.
10. Is it possible to reset the B1820 code without repairs?
Resetting the code with a scanner may temporarily clear it, but if the underlying issue isn’t fixed, the code will likely return.
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