B0790 2017 GMC Sierra Code - Transfer Case Neutral Indicator Circuit
Quick Answer
The B0790 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Transfer Case Neutral Indicator Circuit. Common causes include Faulty neutral indicator switch, Wiring issues in the indicator circuit, Corrosion or poor connections in the circuit. 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
- B0790 2017 GMC Sierra indicates Transfer Case Neutral Indicator Circuit.
- Common causes
- Common causes include Faulty neutral indicator switch, Wiring issues in the indicator circuit, Corrosion or poor connections in the circuit.
- 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.
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Code B0790 2017 GMC Sierra Description
The B0790 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Transfer Case Neutral Indicator Circuit. This code indicates that there is a malfunction in the circuit responsible for illuminating the neutral indicator on the transfer case. The transfer case neutral indicator is crucial for the driver to know the status of the transfer case, whether it is in two-wheel drive, four-wheel drive, or neutral. When this circuit fails, it can lead to confusion for the driver and potentially cause issues with engaging the correct drive mode.
Common Causes of B0790 2017 GMC Sierra
- Faulty neutral indicator switch.
- Wiring issues in the indicator circuit.
- Corrosion or poor connections in the circuit.
- Defective transfer case control module.
- Software issues in the vehicle's computer system.
Symptoms of B0790 2017 GMC Sierra
- Neutral indicator light not illuminating when the transfer case is in neutral.
- Incorrect neutral indicator light status displayed on the dashboard.
- Difficulty engaging or disengaging the transfer case.
- Inability to switch between drive modes.
How to Fix B0790 2017 GMC Sierra
- Begin by inspecting the wiring and connections in the transfer case neutral indicator circuit for any damage or corrosion. Repair or replace any damaged components.
- Test the neutral indicator switch to ensure it is functioning correctly. Replace if necessary.
- Check the transfer case control module for any faults or software issues. Update the software or replace the module as needed.
- Clear the DTC from the vehicle's computer system using a diagnostic tool.
- Test the transfer case to ensure the neutral indicator functions properly in all drive modes.
Cost to Fix B0790 2017 GMC Sierra
The cost of repairing the Transfer Case Neutral Indicator Circuit can vary depending on the specific issue and the labor rates in your area. On average, you can expect to pay between $150 to $400 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get a few quotes from different shops to find the best price.
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Frequently Asked Questions about B0790 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code B0790 in a 2017 GMC Sierra?
The common symptoms include the transfer case neutral indicator not functioning properly, the indicator light staying on or flashing, and potential issues with shifting gears.
2. What is the most common cause of OBDII code B0790 in a 2017 GMC Sierra?
The most common cause of this code is a malfunction in the transfer case neutral indicator circuit, which can be caused by wiring issues, a faulty indicator switch, or a problem with the transfer case control module.
3. How can I diagnose the transfer case neutral indicator circuit issue in my 2017 GMC Sierra?
Diagnosing the issue involves checking the wiring connections, testing the indicator switch for proper functionality, and using a diagnostic tool to scan for trouble codes in the transfer case control module.
4. Can I continue driving my 2017 GMC Sierra with OBDII code B0790 present?
It is not recommended to continue driving with this code present, as it can lead to potential issues with the transfer case operation and affect the vehicle's drivability.
5. How can I repair OBDII code B0790 in my 2017 GMC Sierra?
Repairing this code typically involves fixing any wiring issues, replacing the transfer case neutral indicator switch if necessary, and resetting the trouble codes using a diagnostic tool.
6. Are there any DIY tips for troubleshooting OBDII code B0790 in a 2017 GMC Sierra?
DIY tips include visually inspecting the wiring for any damage, checking the indicator switch for proper operation, and consulting the vehicle's service manual for specific troubleshooting steps.
7. Can a faulty transfer case neutral indicator circuit affect the 4WD system in a 2017 GMC Sierra?
Yes, a faulty circuit can potentially affect the operation of the 4WD system, as the indicator is crucial for informing the driver of the current transfer case mode.
8. Is it necessary to reset the transfer case control module after repairing OBDII code B0790 in a 2017 GMC Sierra?
Yes, it is recommended to reset the transfer case control module after repairing the issue to clear any stored trouble codes and ensure proper communication between the components.
9. How can I prevent OBDII code B0790 from reoccurring in my 2017 GMC Sierra?
Regularly inspecting the transfer case neutral indicator circuit for any signs of wear or damage, ensuring proper wiring connections, and addressing any issues promptly can help prevent the code from reoccurring.
10. Should I seek professional help to diagnose and repair OBDII code B0790 in my 2017 GMC Sierra?
If you are not comfortable diagnosing or repairing electrical issues in your vehicle, it is advisable to seek professional help from a certified mechanic or dealership to ensure the problem is addressed correctly.
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