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Engine-Codes – GMC – B172E 2017 GMC Sierra

B172E 2017 GMC Sierra Code - Driver Seat Cushion Left Rear Haptic Movement

Quick Answer

The B172E diagnostic code for a 2017 GMC Sierra specifically refers to an issue with the driver seat cushion left rear haptic movement. Common causes include Faulty haptic feedback module, Wiring issues or electrical faults in the haptic system, Sensor malfunction or misalignment. 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
B172E 2017 GMC Sierra indicates Driver Seat Cushion Left Rear Haptic Movement.
Common causes
Common causes include Faulty haptic feedback module, Wiring issues or electrical faults in the haptic system, Sensor malfunction or misalignment.
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 11, 2024
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Code B172E 2017 GMC Sierra Description

The B172E diagnostic code for a 2017 GMC Sierra specifically refers to an issue with the driver seat cushion left rear haptic movement. In vehicles equipped with haptic feedback systems, such as those that provide tactile feedback to the driver through the seat cushion, this code indicates a problem with the left rear movement of the cushion. Haptic feedback systems are designed to enhance the driving experience by providing physical sensations to alert the driver of various events, such as lane departure warnings or collision alerts.

OBDII Code B172E 2017 GMC Sierra - Driver Seat Cushion Left Rear Haptic Movement
B172E 2017 GMC Sierra Code - Driver Seat Cushion Left Rear Haptic Movement

Common Causes of B172E 2017 GMC Sierra

  1. Faulty haptic feedback module.
  2. Wiring issues or electrical faults in the haptic system.
  3. Sensor malfunction or misalignment.
  4. Physical damage to the driver seat cushion or haptic mechanism.
  5. Software glitches or calibration errors in the haptic system.

Symptoms of B172E 2017 GMC Sierra

  1. Lack of tactile feedback in the driver seat cushion during alerts or warnings.
  2. Inconsistent or erratic haptic movements in the driver seat cushion.
  3. Failure to receive haptic alerts for lane departure or collision warnings.
  4. Illumination of the airbag warning light on the dashboard.

How to Fix B172E 2017 GMC Sierra

  1. Diagnose the specific cause of the B172E code using a diagnostic scanner to identify the exact issue with the haptic movement mechanism.
  2. Inspect the wiring and connectors related to the haptic feedback system for any damage or loose connections.
  3. Test the sensors and modules involved in the haptic system to ensure they are functioning correctly.
  4. Repair or replace any faulty components, such as the haptic feedback module or damaged wiring.
  5. Reset the system and perform calibration procedures to ensure proper functioning of the haptic movement mechanism.

Cost to Fix B172E 2017 GMC Sierra

The typical repair costs for addressing the B172E code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the required repairs. In general, the cost of parts for replacing components such as the haptic feedback module or wiring harness can range from $200 to $500. Labor costs for diagnosing and repairing the issue may add an additional $150 to $300 to the total repair bill. Overall, the total cost of addressing the B172E code could range from $350 to $800, including parts and labor.

What does this mean?

Tech Notes for B172E 2017 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 B172E 2017 GMC Sierra Code

1. What does the OBDII code B172E indicate on a 2017 GMC Sierra?

- The code B172E indicates a fault in the Driver Seat Cushion Left Rear Haptic Movement system, which is part of the vehicle's seat vibration feature used for alerting the driver through tactile feedback.

2. What are common symptoms of the B172E code in a 2017 GMC Sierra?

- Common symptoms include the absence of vibration feedback in the driver's seat cushion, a malfunction indicator lamp (MIL) or a specific warning light on the dashboard, and possibly an error message displayed on the vehicle’s infotainment system.

3. What can cause the B172E code to appear in a 2017 GMC Sierra?

- Potential causes include a faulty haptic motor in the driver’s seat, damaged wiring or connectors related to the haptic system, or a malfunctioning control module that manages the seat’s haptic functions.

4. How can I diagnose the B172E code in my 2017 GMC Sierra?

- Diagnosis involves using a scan tool to confirm the presence of the B172E code, visually inspecting the haptic motor and related wiring for damage or disconnections, and checking the functionality of the control module with specialized diagnostic equipment.

5. What are the steps to repair the B172E code in a 2017 GMC Sierra?

- Repair steps typically include replacing the faulty haptic motor, repairing or replacing damaged wires or connectors, and potentially reprogramming or replacing the control module if it is found to be defective.

6. Is it safe to drive with the B172E code active in a 2017 GMC Sierra?

- While driving with this code active is generally safe as it does not affect the drivability of the vehicle, it means you won’t receive haptic feedback from the driver’s seat cushion, which could impact awareness of certain alerts or conditions while driving.

7. How urgent is it to address the B172E code in a 2017 GMC Sierra?

- Addressing the B172E code should be considered moderately urgent, especially if the vehicle uses haptic feedback as part of crucial alert systems (like lane departure warnings), which contribute to safe driving.

8. Can a failed haptic motor trigger other issues in the vehicle?

- While a failed haptic motor itself is unlikely to cause other mechanical issues, loss of haptic feedback can lead to unawareness of alerts provided for safety features, potentially increasing the risk of an accident if these alerts are not noticed.

9. What tools are needed to fix the haptic system related to the B172E code in a GMC Sierra?

- Tools needed might include a professional OBDII scanner, multimeter for electrical testing, and basic hand tools for accessing and replacing components within the seat assembly.

10. How often do haptic system issues like the B172E code occur in vehicles?

- Issues with haptic systems like the B172E code are relatively uncommon, but they can occur due to factors like regular wear and tear, vehicle age, or exposure to elements that could damage electrical components.

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