B0790 2016 GMC Sierra Code - Transfer Case Neutral Indicator Circuit
Quick Answer
The B0790 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Transfer Case Neutral Indicator Circuit. Common causes include Faulty transfer case neutral indicator switch, Damaged wiring or connectors 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 2016 GMC Sierra indicates Transfer Case Neutral Indicator Circuit.
- Common causes
- Common causes include Faulty transfer case neutral indicator switch, Damaged wiring or connectors 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 2016 GMC Sierra Description
The B0790 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Transfer Case Neutral Indicator Circuit. This code indicates that there is a malfunction in the circuit responsible for the transfer case neutral indicator, which is a crucial component of the vehicle's four-wheel drive system. The transfer case neutral indicator is designed to inform the driver of the transfer case's current mode, whether it is in two-wheel drive, four-wheel drive, or neutral.
Common Causes of B0790 2016 GMC Sierra
- Faulty transfer case neutral indicator switch.
- Damaged wiring or connectors in the indicator circuit.
- Corrosion or poor connections in the circuit.
- Issues with the transfer case control module.
- Electrical problems in the vehicle's system.
Symptoms of B0790 2016 GMC Sierra
- Incorrect or no display of the transfer case mode on the dashboard.
- Difficulty engaging or disengaging the four-wheel drive system.
- Unintended shifting of the transfer case mode.
- Illumination of the check engine light or four-wheel drive warning light.
How to Fix B0790 2016 GMC Sierra
- Begin by conducting a thorough inspection of the transfer case neutral indicator circuit, including the switch, wiring, and connections.
- Test the transfer case neutral indicator switch for proper functionality using a multimeter.
- Check for any signs of damage or corrosion in the wiring and connectors, repairing or replacing as necessary.
- Clear the DTC from the vehicle's computer using a diagnostic scan tool.
- Test the repair by engaging and disengaging the four-wheel drive system and verifying that the indicator on the dashboard functions correctly.
Cost to Fix B0790 2016 GMC Sierra
The typical repair costs for addressing the B0790 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the parts required for this repair, such as a new transfer case neutral indicator switch or wiring components, can range from $50 to $200. Labor costs at an auto repair shop can add an additional $100 to $300, depending on the shop's hourly rates and the complexity of the repair.
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Frequently Asked Questions about B0790 2016 GMC Sierra Code
1. What does the OBDII code B0790 mean on a 2016 GMC Sierra?
The code B0790 indicates an issue with the Transfer Case Neutral Indicator Circuit, which may involve a malfunction in the wiring, sensor, or related components.
2. What are the common symptoms of a B0790 code?
Common symptoms include the transfer case not shifting properly, the neutral indicator light malfunctioning, or the vehicle being unable to switch into neutral.
3. What causes the B0790 code to appear?
The code can be caused by damaged or corroded wiring, a faulty transfer case control module, a defective neutral position switch, or electrical connectivity issues.
4. Can I drive my GMC Sierra with a B0790 code?
While driving may still be possible, it is not recommended as it may indicate issues with the transfer case that could lead to drivetrain damage.
5. How do I diagnose the B0790 code?
Diagnosis involves inspecting the wiring and connectors for damage or corrosion, testing the neutral position switch, and checking for faults in the transfer case control module.
6. How do I fix the B0790 code on my GMC Sierra?
Repairs may include replacing damaged wiring, cleaning corroded connectors, replacing the neutral position switch, or reprogramming or replacing the transfer case control module.
7. What tools are needed to troubleshoot the B0790 code?
You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and potentially a wiring diagram specific to the 2016 GMC Sierra.
8. How much does it cost to repair the B0790 code?
Repair costs vary depending on the issue, but replacing a neutral position switch can cost $150–$300, while module replacement or wiring repairs may cost more.
9. Can a B0790 code be cleared without repairs?
Clearing the code with an OBDII scanner might temporarily remove it, but it will likely return if the underlying issue is not resolved.
10. Could a software update fix the B0790 code?
In some cases, a software update for the transfer case control module might address the issue, but this depends on the specific circumstances and diagnostics.
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