B0790 2015 GMC Sierra Code - Transfer Case Neutral Indicator Circuit
Quick Answer
The Neutral indicator circuit consists of a Light Emitting Diode (LED) feed circuit, an LED, and an LED control circuit. Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B0790 2015 GMC Sierra indicates Transfer Case Neutral Indicator Circuit.
- Common causes
- Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B0790 2015 GMC Sierra Description
The TCCM tests the Neutral indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the Ignition 1 voltage circuit by grounding the Neutral indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0790 2015 GMC Sierra?
- Faulty Transfer Case Select Switch
- Transfer Case Select Switch harness is open or shorted
- Transfer Case Select Switch circuit poor electrical connection
- Faulty Transfer Case Shift Control Module (TCCM)
How to Fix the DTC B0790 2015 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0790 2015 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.
Need more information about the B0790 2015 GMC Sierra code?
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Frequently Asked Questions about B0790 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code B0790 in a 2015 GMC Sierra related to the Transfer Case Neutral Indicator Circuit?
The common symptoms include the neutral indicator light staying on or not functioning properly, difficulty shifting gears, or the vehicle getting stuck in neutral.
2. What are the possible causes of OBDII code B0790 in a 2015 GMC Sierra?
Possible causes of this code can be a faulty transfer case control module, damaged wiring or connectors in the indicator circuit, or a malfunctioning neutral safety switch.
3. How can I diagnose OBDII code B0790 in my 2015 GMC Sierra related to the Transfer Case Neutral Indicator Circuit?
You can diagnose this code by checking the wiring and connectors for any visible damage, testing the neutral safety switch for proper functionality, and using a diagnostic scanner to read the codes and identify the specific issue.
4. Can I still drive my 2015 GMC Sierra with OBDII code B0790 related to the Transfer Case Neutral Indicator Circuit?
It is not recommended to drive the vehicle with this code present, as it can lead to potential safety hazards and further damage to the transfer case system. It is best to address the issue promptly.
5. How do I repair OBDII code B0790 in my 2015 GMC Sierra?
To repair this code, you may need to replace the transfer case control module, repair or replace damaged wiring and connectors, or replace the neutral safety switch, depending on the specific cause of the issue.
6. Will resetting the OBDII code B0790 in my 2015 GMC Sierra solve the problem?
Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. It is important to diagnose and address the root cause of the problem for a proper repair.
7. Can a DIY enthusiast fix OBDII code B0790 in a 2015 GMC Sierra at home?
While some DIY enthusiasts may have the skills to diagnose and repair this code, it is recommended to seek professional help, especially when dealing with complex electrical systems like the transfer case indicator circuit.
8. How much does it typically cost to repair OBDII code B0790 in a 2015 GMC Sierra at a repair shop?
The cost of repairing this code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain quotes from multiple shops for comparison.
9. Are there any preventive maintenance tips to avoid OBDII code B0790 in a 2015 GMC Sierra?
Regularly inspecting the transfer case indicator circuit, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of this code. Following the manufacturer's recommended maintenance schedule is also important.
10. How long does it take to repair OBDII code B0790 related to the Transfer Case Neutral Indicator Circuit in a 2015 GMC Sierra?
The repair time can vary depending on the specific cause of the issue and the extent of the repair needed. It could take anywhere from a few hours to a full day to diagnose and fix the problem.
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