AutoCodes – GMC – B1805 GMC

B1805 GMC Code - Driver Seat Motor Side Bolster Circuit

Quick Answer

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. Common causes include Faulty Driver Seat Motor Side Bolster, Driver Seat Motor Side Bolster harness is open or shorted, Driver Seat Motor Side Bolster 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: B1805 GMC indicates Driver Seat Motor Side Bolster Circuit.
Common causes: Common causes include Faulty Driver Seat Motor Side Bolster, Driver Seat Motor Side Bolster harness is open or shorted, Driver Seat Motor Side Bolster 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 674

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 31, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1805 GMC Description

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits.

OBDII Code B1805 GMC - Driver Seat Motor Side Bolster Circuit - AutoCodes.com — B1805 GMC Code - Driver Seat Motor Side Bolster Circuit

What does this mean?

What are the Possible Causes of the DTC B1805 GMC?

Faulty Driver Seat Motor Side Bolster
Driver Seat Motor Side Bolster harness is open or shorted
Driver Seat Motor Side Bolster circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B1805 GMC?

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 B1805 GMC 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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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 B1805 GMC Code

1. What are common symptoms of OBDII code B1805 GMC related to the Driver Seat Motor Side Bolster Circuit?

The common symptoms include the driver seat side bolster not moving or adjusting properly, unusual noises coming from the seat, or the seat not holding its position correctly.

2. What are the possible causes of OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

Possible causes include a faulty seat motor, damaged wiring or connectors in the side bolster circuit, a blown fuse, or a malfunctioning seat control module.

3. How can I diagnose the issue related to OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

Diagnose the issue by checking the seat motor functionality, inspecting the wiring and connectors for any damage, testing the fuse for continuity, and using a diagnostic tool to scan the seat control module for error codes.

4. Can I repair the OBDII code B1805 GMC related to the Driver Seat Motor Side Bolster Circuit myself?

If you have experience working with automotive electrical systems, you may be able to repair the issue yourself by replacing the faulty seat motor, repairing damaged wiring or connectors, or resetting the seat control module. Otherwise, it is recommended to seek professional help.

5. Are there any quick tips for troubleshooting OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

Quick tips include checking the fuse related to the seat motor circuit, ensuring the seat is clear of any obstructions that may prevent movement, and inspecting the seat controls for any visible damage or wear.

6. Is it safe to continue driving with OBDII code B1805 GMC triggered for the Driver Seat Motor Side Bolster Circuit?

It is not recommended to continue driving with this code triggered, as it can affect the functionality of the driver's seat, potentially leading to discomfort or safety issues while driving.

7. How much does it cost to repair OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

The cost of repair can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain quotes from different mechanics or dealerships.

8. Can the OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit be intermittent?

Yes, the code may sometimes appear intermittently if there is a loose connection or an intermittent fault in the seat motor circuit. It is important to address the issue promptly to prevent further problems.

9. Are there any recalls or technical service bulletins related to OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

Check with your local dealership or GMC's official website to see if there are any recalls or technical service bulletins related to this specific OBDII code. Keeping up to date with manufacturer information can be helpful in addressing the issue.

10. How long does it typically take to repair OBDII code B1805 GMC for the Driver Seat Motor Side Bolster Circuit?

The repair time can vary depending on the complexity of the issue and the availability of parts. In some cases, the repair can be completed within a few hours, while more complicated issues may take longer.