B0780 2014 GMC Sierra Code - Four Wheel Drive Low Range Indicator Circuit
Quick Answer
The Four-Wheel Drive (4WD) Low Range (LO) indicator circuit consists of a Light Emitting Diode (LED) feed circuit, a LED, and a 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
- B0780 2014 GMC Sierra indicates Four Wheel Drive Low Range 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 B0780 2014 GMC Sierra Description
The TCCM tests the 4WD LO indicator circuit for unexpected voltage by monitoring the B+ supplied by the Body Control Module (BCM) on the indicator dimming control circuit by grounding the 4WD LO indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0780 2014 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 B0780 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0780 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 B0780 2014 GMC Sierra Code
1. What are the common symptoms of OBDII code B0780 in a 2014 GMC Sierra?
The common symptoms of OBDII code B0780 in a 2014 GMC Sierra include the Four Wheel Drive Low Range Indicator not functioning properly or illuminating on the dashboard.
2. What can cause the OBDII code B0780 to trigger in a 2014 GMC Sierra?
The OBDII code B0780 in a 2014 GMC Sierra is typically triggered by a malfunction in the Four Wheel Drive Low Range 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 cause of OBDII code B0780 in my 2014 GMC Sierra?
Diagnosing the cause of OBDII code B0780 in a 2014 GMC Sierra involves checking the wiring connections, testing the indicator switch for proper operation, and using a scan tool to communicate with the transfer case control module for any stored fault codes.
4. Is it safe to drive my 2014 GMC Sierra with the OBDII code B0780 present?
It is generally safe to drive your 2014 GMC Sierra with the OBDII code B0780, as long as you are not experiencing any other issues with the vehicle's drivability. However, it is recommended to address the underlying problem as soon as possible to prevent further complications.
5. Can I repair the OBDII code B0780 in my 2014 GMC Sierra by myself?
Repairing the OBDII code B0780 in a 2014 GMC Sierra may be possible for DIY enthusiasts with the necessary tools and knowledge of automotive electrical systems. However, if you are unsure or uncomfortable with the repair process, it is advisable to seek professional help.
6. Are there any common mistakes to avoid when troubleshooting OBDII code B0780 in a 2014 GMC Sierra?
Common mistakes to avoid when troubleshooting OBDII code B0780 in a 2014 GMC Sierra include overlooking loose wiring connections, misdiagnosing the indicator switch as the sole problem, and neglecting to clear the fault code after repairs are made.
7. How much does it typically cost to repair OBDII code B0780 in a 2014 GMC Sierra at a dealership or repair shop?
The cost to repair OBDII code B0780 in a 2014 GMC Sierra at a dealership or repair shop can vary depending on the exact cause of the issue, but it may range from $150 to $400, including parts and labor.
8. Can the OBDII code B0780 in a 2014 GMC Sierra cause other related warning lights to illuminate on the dashboard?
Yes, the OBDII code B0780 in a 2014 GMC Sierra can sometimes cause other related warning lights, such as the Four Wheel Drive High Range Indicator or Service 4WD System lights, to illuminate on the dashboard due to the interconnected nature of the system.
9. How long does it typically take to repair OBDII code B0780 in a 2014 GMC Sierra?
The time required to repair OBDII code B0780 in a 2014 GMC Sierra can vary depending on the exact cause of the issue and the expertise of the technician. In general, the repair process may take anywhere from 1 to 3 hours to complete.
10. Can resetting the vehicle's computer system clear the OBDII code B0780 in a 2014 GMC Sierra?
Resetting the vehicle's computer system may temporarily clear the OBDII code B0780 in a 2014 GMC Sierra, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem to prevent further issues.
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