Engine-CodesGMC – B1835 2014 GMC Sierra

B1835 2014 GMC Sierra Code - Driver Seat Lumbar Rearward Switch Circuit

Quick Answer

The B1835 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the driver seat lumbar rearward switch circuit. Common causes include Faulty lumbar rearward switch, Wiring or connection issues in the circuit, Blown fuse related to the lumbar support system. 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
B1835 2014 GMC Sierra indicates Driver Seat Lumbar Rearward Switch Circuit.
Common causes
Common causes include Faulty lumbar rearward switch, Wiring or connection issues in the circuit, Blown fuse related to the lumbar support system.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B1835 2014 GMC Sierra Description

The B1835 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the driver seat lumbar rearward switch circuit. This code indicates that there is a malfunction in the circuit that controls the lumbar support moving the seat in the rearward direction. The lumbar support is an essential feature of the driver's seat, providing adjustable support to the lower back for added comfort during long drives. When this circuit malfunctions, it can lead to an inability to adjust the lumbar support in the desired direction.

OBDII Code B1835 2014 GMC Sierra - Driver Seat Lumbar Rearward Switch Circuit
B1835 2014 GMC Sierra Code - Driver Seat Lumbar Rearward Switch Circuit

Common Causes of B1835 2014 GMC Sierra

  1. Faulty lumbar rearward switch.
  2. Wiring or connection issues in the circuit.
  3. Blown fuse related to the lumbar support system.
  4. Malfunctioning lumbar support motor.
  5. Water or moisture damage affecting the lumbar support circuit.

Symptoms of B1835 2014 GMC Sierra

  1. Inability to adjust the lumbar support of the driver's seat in the rearward direction.
  2. Unresponsive or erratic behavior of the lumbar rearward switch.
  3. Strange noises or vibrations when attempting to adjust the lumbar support.
  4. The lumbar support moving in the opposite direction or getting stuck.

How to Fix B1835 2014 GMC Sierra

  1. Begin by inspecting the lumbar rearward switch and the wiring harness for any visible damage or loose connections. Repair or replace as necessary.
  2. Check and replace any blown fuses related to the lumbar support system.
  3. Test the lumbar support motor for functionality and replace if found to be faulty.
  4. Clear the diagnostic trouble codes stored in the vehicle's system using a diagnostic scanner to reset the system and verify that the issue has been resolved.
  5. Conduct a thorough test drive to ensure that the lumbar support system is functioning correctly and the issue has been successfully addressed.

Cost to Fix B1835 2014 GMC Sierra

The typical repair costs for addressing the B1835 code on a 2014 GMC Sierra can vary depending on the specific underlying issue and the labor rates in your area. However, as a rough estimate, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to get a more accurate estimate. Additionally, factors such as the location, vehicle make and model, and engine type can influence the overall cost of the repair.

Tech Notes for B1835 2014 GMC Sierra









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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 B1835 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code B1835 in a 2014 GMC Sierra related to the Driver Seat Lumbar Rearward Switch Circuit?

The common symptoms include the driver seat lumbar support not moving rearward when the switch is activated, or the lumbar support moving intermittently.

2. What are the possible causes of OBDII code B1835 in a 2014 GMC Sierra?

Possible causes include a faulty lumbar rearward switch, damaged wiring or connectors in the circuit, a malfunctioning lumbar support motor, or a problem with the control module.

3. How can I diagnose the OBDII code B1835 in my 2014 GMC Sierra related to the Driver Seat Lumbar Rearward Switch Circuit?

You can diagnose the issue by visually inspecting the lumbar rearward switch and its wiring, testing the switch for proper functionality, checking the connectors for any damage, and using a scan tool to retrieve and analyze the trouble code.

4. What are some repair tips for resolving OBDII code B1835 in a 2014 GMC Sierra?

You can start by checking and cleaning the lumbar rearward switch, repairing any damaged wiring or connectors, replacing the switch if necessary, testing the lumbar support motor for proper operation, and resetting the control module after making repairs.

5. Can I drive my 2014 GMC Sierra with OBDII code B1835 related to the Driver Seat Lumbar Rearward Switch Circuit?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the driver seat lumbar support.

6. How much does it typically cost to repair OBDII code B1835 in a 2014 GMC Sierra?

The cost of repair can vary depending on the exact cause of the issue. Simple fixes like cleaning the switch or repairing wiring may be relatively inexpensive, while replacing the lumbar support motor or control module can be more costly.

7. Can I reset the OBDII code B1835 in my 2014 GMC Sierra without making any repairs?

Resetting the code without addressing the underlying issue may temporarily clear the fault code, but it is likely to return if the root cause is not fixed. It is recommended to diagnose and repair the problem to prevent future issues.

8. Is OBDII code B1835 related to the Driver Seat Lumbar Rearward Switch Circuit a common problem in 2014 GMC Sierra vehicles?

While not extremely common, issues with the driver seat lumbar support circuit can occur in 2014 GMC Sierra vehicles, leading to the triggering of OBDII code B1835.

9. Can a DIY enthusiast with basic automotive knowledge repair OBDII code B1835 in a 2014 GMC Sierra?

Yes, a DIY enthusiast with basic automotive knowledge can potentially repair this code by following diagnostic procedures, checking components like the switch and wiring, and making necessary repairs or replacements.

10. How can I prevent OBDII code B1835 related to the Driver Seat Lumbar Rearward Switch Circuit from occurring in my 2014 GMC Sierra in the future?

Regularly inspecting and maintaining the driver seat lumbar support components, avoiding excessive force when using the switches, and addressing any issues promptly can help prevent the recurrence of this trouble code.

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