B172E 2014 GMC Sierra Code - Driver Seat Cushion Left 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 Left Rear Haptic Movement Motor, Driver Seat Cushion Left Rear Haptic Movement Motor harness is open or shorted, Driver Seat Cushion Left 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
- B172E 2014 GMC Sierra indicates Driver Seat Cushion Left Rear Haptic Movement.
- Common causes
- Common causes include Faulty Driver Seat Cushion Left Rear Haptic Movement Motor, Driver Seat Cushion Left Rear Haptic Movement Motor harness is open or shorted, Driver Seat Cushion Left 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 B172E 2014 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 B172E 2014 GMC Sierra?
- Faulty Driver Seat Cushion Left Rear Haptic Movement Motor
- Driver Seat Cushion Left Rear Haptic Movement Motor harness is open or shorted
- Driver Seat Cushion Left Rear Haptic Movement Motor circuit poor electrical connection
- Faulty Seat Memory Control Module
How to Fix the DTC B172E 2014 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 B172E 2014 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 B172E 2014 GMC Sierra Code
1. What does the OBDII code B172E indicate on a 2014 GMC Sierra?
The B172E code on a 2014 GMC Sierra 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 2014 GMC Sierra?
Common symptoms include the absence of vibration feedback in the driver's seat, a continuously operating vibration feature, or an error message displayed on the vehicle's dashboard.
3. What could cause the B172E code to appear on a 2014 GMC Sierra?
Possible causes include a faulty haptic motor, damaged wiring or connections in the seat’s haptic system, or a malfunctioning control module.
4. How can I diagnose the B172E code on a 2014 GMC Sierra?
Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the seat's wiring and connections for damage, and testing the haptic motor and control module functionality with a multimeter or specialized diagnostic tool.
5. What steps should be taken to repair the B172E code on a 2014 GMC Sierra?
Repair steps typically include replacing or repairing any faulty haptic motors, fixing or replacing damaged wires or connectors, and potentially resetting or replacing the control module if it is found to be defective.
6. Is it safe to drive a 2014 GMC Sierra with the B172E code active?
While it may be safe to drive, the lack of haptic feedback could mean missing critical alerts about vehicle performance or safety issues, so it is advisable to address the problem as soon as possible.
7. Will the B172E code clear itself once the repairs are made on a 2014 GMC Sierra?
After the necessary repairs are made, the code should be cleared using an OBDII scanner. If the repairs are successful, the code should not reappear.
8. What tools are needed to fix the B172E code on a 2014 GMC Sierra?
Tools needed might include an OBDII scanner, a multimeter for electrical testing, and basic hand tools for accessing and replacing components within the seat assembly.
9. How much does it typically cost to resolve the B172E code in a 2014 GMC Sierra?
Costs can vary widely based on the specific repair needed and local labor rates, ranging from minimal for a simple wiring fix to more significant expenses if replacing the haptic motor or control module is necessary.
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