AutoCodesGMC – B1735 2018 GMC Sierra

B1735 2018 GMC Sierra Code - Driver Seat Front Up 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
B1735 2018 GMC Sierra indicates Driver Seat Front Up 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 139
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 23, 2023
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Code B1735 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 B1735 2018 GMC Sierra - Driver Seat Front Up Switch Circuit - AutoCodes.com
B1735 2018 GMC Sierra Code - Driver Seat Front Up Switch Circuit

What are the Possible Causes of the DTC B1735 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 B1735 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1735 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.

Need more information about the B1735 2018 GMC Sierra code?

Need more information on how to fix the B1735 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 B1735 2018 GMC Sierra Code

1. What does the OBDII code B1735 mean on a 2018 GMC Sierra?

B1735 indicates an issue with the Driver Seat Front Up Switch Circuit, which involves the electrical system controlling the front height adjustment of the driver’s seat.

2. What are common symptoms of code B1735 in a 2018 GMC Sierra?

Symptoms may include the driver seat not adjusting properly in the front height position, an unresponsive seat adjustment switch, or an illuminated check engine or warning light.

3. What causes the B1735 code to appear on a 2018 GMC Sierra?

Common causes include a faulty driver seat front up switch, damaged wiring or connectors in the switch circuit, a blown fuse, or an issue with the seat control module.

4. How can I diagnose the B1735 code on my GMC Sierra?

Diagnose by using a scan tool to confirm the code, visually inspecting the wiring and connectors for damage, testing the driver seat front up switch for proper function, and checking the seat control module for faults.

5. Can I still drive my 2018 GMC Sierra with the B1735 code?

Yes, you can still drive the vehicle, but the front height adjustment of the driver seat may not work, which could affect comfort or driving ergonomics.

6. How do I fix the B1735 code on a 2018 GMC Sierra?

Repairs may include replacing the faulty driver seat front up switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the seat control module if necessary.

7. How much does it cost to fix the B1735 code on a GMC Sierra?

Repair costs vary depending on the issue, but replacing the seat switch typically costs $100-$300, while wiring repairs or module replacements may cost more.

8. Can I fix the B1735 code on my GMC Sierra myself?

If you’re comfortable with basic electrical diagnostics and repairs, you may be able to fix simple issues like replacing the switch or repairing damaged wiring. For complex issues, professional assistance is recommended.

9. Does the B1735 code require reprogramming the seat control module?

Reprogramming is not always required, but if the issue lies within the seat control module, reprogramming or replacement may be necessary.

10. Will clearing the B1735 code with a scan tool fix the issue?

Clearing the code will remove it temporarily, but the underlying issue must be resolved to prevent the code from returning.

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