AutoCodes – GMC – B1755 2018 GMC Sierra

B1755 2018 GMC Sierra Code - Driver Seat Assembly Forward 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: B1755 2018 GMC Sierra indicates Driver Seat Assembly Forward 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 177

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 B1755 2018 GMC Sierra 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 B1755 2018 GMC Sierra - Driver Seat Assembly Forward Switch Circuit - AutoCodes.com — B1755 2018 GMC Sierra Code - Driver Seat Assembly Forward Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1755 2018 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 B1755 2018 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1755 2018 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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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 B1755 2018 GMC Sierra Code

1. What does the OBDII code B1755 mean on a 2018 GMC Sierra?

Code B1755 indicates a problem with the driver seat assembly forward switch circuit, specifically an issue with the electrical circuit controlling the forward movement of the driver seat.

2. What are the common symptoms of code B1755 in a 2018 GMC Sierra?

Symptoms include the driver seat not moving forward when using the adjustment switch, unusual noises when attempting to adjust the seat, or intermittent seat movement.

3. What causes OBDII code B1755 to appear in a 2018 GMC Sierra?

Common causes include a faulty seat adjustment switch, damaged wiring or connectors in the forward switch circuit, or a malfunctioning seat motor.

4. How can I diagnose the cause of code B1755 in my GMC Sierra?

Start by inspecting the seat adjustment switch, wiring, and connectors for damage or corrosion. Use a multimeter to test for continuity in the circuit and check for proper voltage at the switch.

5. Can I still drive my 2018 GMC Sierra with code B1755?

Yes, the issue is not critical to vehicle operation, but you may find it inconvenient if you cannot adjust the driver seat properly.

6. How do I fix code B1755 on a 2018 GMC Sierra?

Repairs may involve replacing the seat adjustment switch, repairing damaged wiring or connectors, or replacing the seat motor if itâ€™s faulty.

7. How much does it cost to fix code B1755 on a GMC Sierra?

The cost varies depending on the specific issue but typically ranges from $100 to $300 for parts and labor, assuming no major components like the seat motor need replacement.

8. Can I repair code B1755 myself on a 2018 GMC Sierra?

If you have basic electrical knowledge and tools like a multimeter, you can inspect and replace damaged components. For complex repairs, such as replacing the seat motor, professional assistance may be needed.

9. Does a blown fuse cause code B1755 in a GMC Sierra?

While possible, a blown fuse is less likely the primary cause of this code. However, itâ€™s worth checking the fuse related to the power seat system as part of your diagnosis.

10. Will clearing the code fix the B1755 issue in my GMC Sierra?

Clearing the code may temporarily erase it from the system, but if the underlying issue isnâ€™t fixed, the code will return. Proper diagnosis and repair are necessary to resolve the problem.