AutoCodes – Chevrolet – B1820 2016 Chevrolet Silverado

B1820 2016 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 2016 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 162

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 2016 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 2016 Chevrolet Silverado - Driver Seat Recline Rearward Switch Circuit - AutoCodes.com — B1820 2016 Chevrolet Silverado Code - Driver Seat Recline Rearward Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1820 2016 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 2016 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 2016 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 2016 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 2016 Chevrolet Silverado Code

1. What does OBDII code B1820 for a 2016 Chevrolet Silverado indicate?

The B1820 code specifically relates to the Driver Seat Recline Rearward Switch Circuit.

2. What are common symptoms of OBDII code B1820 in a 2016 Chevrolet Silverado?

Common symptoms include non-functional or erratic behavior of the driver seat recline rearward switch.

3. What are possible causes of OBDII code B1820 in a 2016 Chevrolet Silverado?

Possible causes include damaged wiring, a faulty switch, or issues with the seat control module.

4. How can I diagnose OBDII code B1820 in my 2016 Chevrolet Silverado?

Diagnosing this code typically involves inspecting the wiring, testing the switch for continuity, and checking the seat control module for faults.

5. Can I repair OBDII code B1820 in my 2016 Chevrolet Silverado myself?

Depending on your skill level, you may be able to repair this issue yourself by replacing the faulty switch, repairing damaged wiring, or addressing any module issues.

6. Will OBDII code B1820 prevent my 2016 Chevrolet Silverado from passing an emissions test?

While the B1820 code is related to the driver seat switch circuit and not directly emissions-related, it's still recommended to address and resolve the issue.

7. Is it safe to continue driving my 2016 Chevrolet Silverado with OBDII code B1820?

It is generally safe to drive the vehicle with this code, but it's important to address the underlying issue to ensure proper functionality of the driver seat controls.

8. How much does it typically cost to repair OBDII code B1820 in a 2016 Chevrolet Silverado?

The cost of repairing this code can vary depending on the specific cause and whether you choose to do the repairs yourself or seek professional help.

9. Can a faulty driver seat recline rearward switch cause other issues in my 2016 Chevrolet Silverado?

While the immediate impact may be limited to the driver seat controls, unresolved issues with the switch could potentially lead to further electrical problems.

10. Are there any preventive measures I can take to avoid OBDII code B1820 in my 2016 Chevrolet Silverado?

Regularly inspecting and maintaining the driver seat controls, including the recline rearward switch, can help prevent issues that may trigger the B1820 code.