B172F 2017 GMC Sierra Code - Driver Seat Cushion Right Rear Haptic Movement
Quick Answer
The safety alert seat provides a vibration in the driver’s seat bottom cushion to alert the driver of a number of concerns. Common causes include Faulty Driver Seat Cushion Right Rear Haptic Movement Motor, Driver Seat Cushion Right Rear Haptic Movement Motor harness is open or shorted, Drivers Seat Cushion Right Rear Haptic Movement Motor 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
- B172F 2017 GMC Sierra indicates Driver Seat Cushion Right Rear Haptic Movement.
- Common causes
- Common causes include Faulty Driver Seat Cushion Right Rear Haptic Movement Motor, Driver Seat Cushion Right Rear Haptic Movement Motor harness is open or shorted, Drivers Seat Cushion Right Rear Haptic Movement Motor 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.
Code B172F 2017 GMC Sierra Description
The Seat Memory Control Module receives serial data messages from other modules and provides voltage to control the seat haptic movement motors. The Seat Memory Control Module will pulse the left, right, or both motors with the number of pulses requested over serial data. The Seat Memory Control Module monitors the control circuits for open, short to ground, and short to voltage conditions and will set Diagnostic Trouble Code (DTC) if a circuit fault is detected.
The seat haptic movement motor is DC motor located in the driver’s seat bottom cushion. Two seat haptic movement motors are used in the seat bottom cushion, positioned on the left and right side. An offset weight is attached to the motor. When activated, the spinning offset weight creates a vibration felt by the driver through the seat cushion.
Each seat haptic movement motor receives a constant chassis ground. The motor is controlled by the Seat Memory Control Module providing voltage through a dedicated control circuit. When an alert is required, the Seat Memory Control Module will apply voltage, activating the seat haptic movement motor.
What are the Possible Causes of the DTC B172F 2017 GMC Sierra?
- Faulty Driver Seat Cushion Right Rear Haptic Movement Motor
- Driver Seat Cushion Right Rear Haptic Movement Motor harness is open or shorted
- Drivers Seat Cushion Right Rear Haptic Movement Motor circuit poor electrical connection
- Faulty Seat Memory Control Module
How to Fix the DTC B172F 2017 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 B172F 2017 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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Frequently Asked Questions about B172F 2017 GMC Sierra Code
1. What does the OBDII code B172F mean on a 2017 GMC Sierra?
The code B172F indicates an issue with the right rear haptic movement of the driver seat cushion, which is part of the seat's vibration alert system.
2. What are the symptoms of the B172F code in a 2017 GMC Sierra?
Common symptoms include the driver seat failing to provide vibration alerts for lane departure, parking assist, or collision warnings.
3. What causes the OBDII code B172F to appear?
This code can be triggered by a faulty haptic motor, damaged wiring or connectors, or a malfunction in the seat control module.
4. Can the B172F code affect other vehicle systems?
No, the B172F code typically only affects the vibration alert functionality in the driver seat and does not impact other vehicle systems.
5. How can I diagnose the B172F code in my 2017 GMC Sierra?
Diagnosis involves inspecting the wiring and connectors for the haptic motor, testing the motor itself, and verifying the seat control module's operation using a diagnostic tool.
6. Is it safe to drive with the B172F code active?
Yes, it is safe to drive, but you may lose the seat's vibration alert functionality, which reduces the effectiveness of certain driver assistance features.
7. How do I fix the B172F code on my GMC Sierra?
Repairs may include replacing the haptic motor, repairing damaged wiring, or reprogramming or replacing the seat control module.
8. Can a software update fix the B172F code?
In some cases, a software update for the seat control module may address the issue, but this should be confirmed with a diagnostic scan.
9. How much does it cost to repair the B172F code issue?
Repair costs vary, but replacing a haptic motor can cost between $100 and $300, plus labor, depending on the dealership or repair shop.
10. Can I reset the B172F code without repairs?
Clearing the code without fixing the underlying issue will likely result in the code returning, as the problem persists.
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