AutoCodes – Chevrolet – B1820 2015 Chevrolet Silverado

B1820 2015 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 2015 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.

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Code Popularity 362

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Apr 24, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1820 2015 Chevrolet Silverado Description

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. When the power seat or lumbar switches are pressed, the appropriate signal circuit from the Seat Memory Control Module is pulled low through the switch contacts indicating the power seat command. The Seat Memory Control Module then commands the driver seat or lumbar to move in response to the switch signals. The Diagnostic Trouble Code (DTC) will be set when there is a short to ground on a switch signal circuit.

OBDII Code B1820 2015 Chevrolet Silverado - Driver Seat Recline Rearward Switch Circuit - AutoCodes.com — B1820 2015 Chevrolet Silverado Code - Driver Seat Recline Rearward Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1820 2015 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 2015 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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1820 2015 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.

Need more information about the B1820 2015 Chevrolet Silverado code?

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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 B1820 2015 Chevrolet Silverado Code

1. What does the OBDII code B1820 mean on a 2015 Chevrolet Silverado?

The code B1820 indicates an issue with the Driver Seat Recline Rearward Switch Circuit, typically related to a fault in the switch, wiring, or associated components.

2. What are the symptoms of code B1820 in a 2015 Chevrolet Silverado?

Common symptoms include the driver seat recline not functioning properly or being unresponsive when attempting to move it rearward.

3. What causes code B1820 in a Chevrolet Silverado?

Potential causes include a faulty recline rearward switch, damaged wiring or connectors, or an issue with the seat control module.

4. Can I still drive my Silverado with the B1820 code?

Yes, the truck is drivable, but the driver seat recline function may be impaired, which could affect comfort and driving ergonomics.

5. How do I diagnose code B1820 in my 2015 Chevrolet Silverado?

Diagnosis involves inspecting the recline rearward switch, checking the wiring and connectors for damage, and testing the seat control module for proper operation.

6. How do I fix code B1820 on a Chevrolet Silverado?

Repairs may include replacing the recline rearward switch, repairing damaged wiring, or reprogramming or replacing the seat control module if necessary.

7. Is code B1820 a common issue in the 2015 Chevrolet Silverado?

While not extremely common, this code can occur due to wear and tear on seat adjustment components or electrical issues.

8. How much does it cost to repair code B1820 in a Silverado?

Repair costs vary but can range from $50 to $300 depending on whether the issue is a simple wiring repair or a replacement of the seat switch or module.

9. Can I reset the B1820 code without fixing the problem?

Clearing the code without addressing the root cause may temporarily turn off the warning, but the code and issue will likely return.

10. Do I need a professional to fix code B1820 in my Silverado?

If youâ€™re comfortable with basic electrical diagnostics, you can attempt repairs yourself, but professional help may be needed for module reprogramming or complex wiring issues.