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B172F 2018 GMC Sierra Code - Driver Seat Cushion Right Rear Haptic Movement

Quick Answer

The B172F diagnostic trouble code (DTC) for the 2018 GMC Sierra specifically refers to an issue with the driver seat cushion right rear haptic movement. Common causes include Faulty haptic motor responsible for generating vibrations/movements, Wiring issues, such as shorts or open circuits, disrupting communication, Sensor malfunctions detecting the driver's presence or input. 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
B172F 2018 GMC Sierra indicates Driver Seat Cushion Right Rear Haptic Movement.
Common causes
Common causes include Faulty haptic motor responsible for generating vibrations/movements, Wiring issues, such as shorts or open circuits, disrupting communication, Sensor malfunctions detecting the driver's presence or input.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B172F 2018 GMC Sierra Description

The B172F diagnostic trouble code (DTC) for the 2018 GMC Sierra specifically refers to an issue with the driver seat cushion right rear haptic movement. In vehicles equipped with haptic feedback systems, such as those that provide tactile feedback to the driver through vibrations or motions, this code indicates a problem with the right rear movement of the driver's seat cushion. This system is designed to provide alerts or notifications to the driver for various functions or warnings, and any malfunction in this area can affect the overall driving experience.

OBDII Code B172F 2018 GMC Sierra - Driver Seat Cushion Right Rear Haptic Movement
B172F 2018 GMC Sierra Code - Driver Seat Cushion Right Rear Haptic Movement

Common Causes of B172F 2018 GMC Sierra

  1. Faulty haptic motor responsible for generating vibrations/movements.
  2. Wiring issues, such as shorts or open circuits, disrupting communication.
  3. Sensor malfunctions detecting the driver's presence or input.
  4. Control module failure affecting the operation of the haptic system.
  5. Physical damage to the seat cushion or associated components.

Symptoms of B172F 2018 GMC Sierra

  1. Absence of haptic feedback on the right rear side of the driver's seat cushion.
  2. Inconsistent or erratic vibrations or movements in the seat cushion.
  3. Failure of the seat cushion to provide timely alerts or notifications.
  4. Warning lights related to the haptic feedback system may illuminate on the dashboard.

How to Fix B172F 2018 GMC Sierra

  1. Begin by conducting a thorough diagnostic scan to confirm the B172F code and pinpoint the exact source of the issue.
  2. Inspect the haptic motor, wiring, sensors, and control module for any visible damage or signs of malfunction.
  3. Test the components individually to identify the specific part that requires repair or replacement.
  4. Replace the faulty haptic motor, repair damaged wiring or sensors, and recalibrate the system if necessary.
  5. Clear the DTC from the vehicle's memory and test the haptic feedback system to ensure proper functionality.

Cost to Fix B172F 2018 GMC Sierra

The cost of repairing the driver seat cushion right rear haptic movement issue can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the parts and labor for this repair could range from $200 to $500. However, as mentioned earlier, labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. It is advisable to consult with a trusted mechanic or service center for a more accurate cost estimate based on your location and vehicle model.

What does this mean?

Tech Notes for B172F 2018 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 B172F 2018 GMC Sierra Code

1. What does the OBDII code B172F mean on a 2018 GMC Sierra?

B172F indicates an issue with the driver seat cushion's right rear haptic movement, typically related to the vibration motor or its circuit.

2. What are the symptoms of code B172F in a 2018 GMC Sierra?

Common symptoms include the driver seat not vibrating during alerts, reduced functionality of safety features like lane departure warnings, or no noticeable movement from the seat cushion.

3. What causes the B172F code on a GMC Sierra?

Potential causes include a faulty haptic motor, damaged wiring, loose connectors, or an issue with the control module managing the seat's vibration feature.

4. Can I still drive my 2018 GMC Sierra with a B172F code?

Yes, the vehicle is still drivable, but the safety alert system's effectiveness may be reduced due to the non-functional seat vibration feature.

5. How do I troubleshoot the B172F code on my GMC Sierra?

Start by checking the wiring and connectors under the seat, ensuring they are secure and undamaged. If no issues are found, test the haptic motor or consult a professional.

6. How much does it cost to fix a B172F code issue?

Repair costs vary depending on the issue. Replacing a haptic motor may cost $200–$500, while wiring repairs or diagnostics may range from $100–$200.

7. Can a loose connector trigger the B172F code?

Yes, a loose or corroded connector can disrupt the signal to the haptic motor and trigger the B172F code.

8. Do I need to replace the entire seat if I get a B172F code?

No, in most cases, only the haptic motor or related components need replacement, not the entire seat.

9. Will clearing the B172F code fix the problem?

Clearing the code may temporarily remove it, but if the underlying issue is not resolved, the code will likely reappear.

10. Is the B172F code covered under warranty for a 2018 GMC Sierra?

It depends on your warranty coverage. If your vehicle is still under the bumper-to-bumper or seat system warranty, repairs may be covered.

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