B392B GMC Code - Seat Lumbar/Bolster Pump
Quick Answer
When a seat lumbar, bolster, or massage function is commanded ON, the Seat Bolster Memory Control Module applies battery voltage and a low side drive Pulse Width Modulated (PWM) signal through their respective control circuits to the seat lumbar/bolster pump. Common causes include Faulty Seat Lumbar/Bolster Pump, Seat Lumbar/Bolster Pump harness is open or shorted, Seat Lumbar/Bolster Pump 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
- B392B GMC indicates Seat Lumbar/Bolster Pump.
- Common causes
- Common causes include Faulty Seat Lumbar/Bolster Pump, Seat Lumbar/Bolster Pump harness is open or shorted, Seat Lumbar/Bolster Pump 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 B392B GMC Description
What are the Possible Causes of the DTC B392B GMC?
- Faulty Seat Lumbar/Bolster Pump
- Seat Lumbar/Bolster Pump harness is open or shorted
- Seat Lumbar/Bolster Pump circuit poor electrical connection
- Faulty Seat Bolster Memory Control Module
How to Fix the DTC B392B GMC?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B392B GMC 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 B392B GMC Code
1. What are common symptoms of OBDII code B392B for Seat Lumbar/Bolster Pump in a GMC vehicle?
The common symptoms include a malfunctioning seat lumbar or bolster pump, which may result in the inability to adjust the lumbar support or side bolsters of the seat.
2. What are possible causes of OBDII code B392B related to Seat Lumbar/Bolster Pump in a GMC vehicle?
The code B392B may be triggered by a faulty seat lumbar or bolster pump motor, a damaged pump module, wiring issues, or a problem with the control switch.
3. How can I diagnose the OBDII code B392B for Seat Lumbar/Bolster Pump in my GMC vehicle?
Diagnosing the code involves checking the pump motor for proper operation, inspecting the wiring for any damage, testing the control switch, and scanning the vehicle's computer for fault codes.
4. What should I do if I encounter OBDII code B392B for Seat Lumbar/Bolster Pump in my GMC vehicle?
If you encounter this code, it is recommended to first check the fuse related to the seat lumbar/bolster pump, inspect the wiring connections, and test the pump motor to determine the root cause of the issue.
5. Can I continue to drive my GMC vehicle with OBDII code B392B related to Seat Lumbar/Bolster Pump?
While it may be possible to continue driving the vehicle with this code, it is advisable to address the issue promptly to ensure proper functioning of the seat lumbar and bolster adjustments.
6. Is it necessary to visit a dealership or mechanic to repair OBDII code B392B for Seat Lumbar/Bolster Pump in my GMC vehicle?
Depending on your skill level and access to diagnostic tools, you may be able to address the issue yourself by checking the fuse, wiring, and pump motor. However, if you are unsure or unable to diagnose the problem, seeking professional help is recommended.
7. Are there any specific repair tips for fixing OBDII code B392B related to Seat Lumbar/Bolster Pump in a GMC vehicle?
When repairing this code, make sure to carefully inspect all related components, such as the pump motor, module, wiring, and control switch. Additionally, following the vehicle's service manual for testing procedures is crucial.
8. Can resetting the OBDII system clear the B392B code for Seat Lumbar/Bolster Pump in my GMC vehicle?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the B392B code is not addressed, it is likely to reappear. It is recommended to diagnose and repair the root cause of the problem.
9. What are the potential risks of ignoring OBDII code B392B for Seat Lumbar/Bolster Pump in my GMC vehicle?
Ignoring this code may result in continued malfunction of the seat lumbar or bolster adjustments, leading to discomfort while driving and potentially affecting the overall driving experience and safety.
10. Is the repair for OBDII code B392B related to Seat Lumbar/Bolster Pump in a GMC vehicle typically expensive?
The repair cost for this code can vary depending on the exact cause of the issue. Simple fixes like replacing a blown fuse or repairing a loose connection may be relatively inexpensive, while replacing the pump motor or control module could be more costly.
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