Engine-Codes.com
Engine-Codes – GMC – B0780 2016 GMC Sierra

B0780 2016 GMC Sierra Code - Four Wheel Drive Low Range Indicator Circuit

Quick Answer

The B0780 code on a 2016 GMC Sierra indicates a problem with the Four Wheel Drive Low Range Indicator Circuit. Common causes include Corroded or damaged wiring in the Four Wheel Drive Low Range Indicator Circuit, Loose or poor connections in the circuit, Faulty indicator switch. 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
B0780 2016 GMC Sierra indicates Four Wheel Drive Low Range Indicator Circuit.
Common causes
Common causes include Corroded or damaged wiring in the Four Wheel Drive Low Range Indicator Circuit, Loose or poor connections in the circuit, Faulty indicator switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B0780 2016 GMC Sierra Description

The B0780 code on a 2016 GMC Sierra indicates a problem with the Four Wheel Drive Low Range Indicator Circuit. This circuit is responsible for indicating when the vehicle is in low range mode, which is used for off-road driving or towing heavy loads. When this circuit malfunctions, it can cause the indicator light on the dashboard to either stay on, flicker, or not illuminate at all, leading to confusion for the driver regarding the current drive mode of the vehicle.

OBDII Code B0780 2016 GMC Sierra - Four Wheel Drive Low Range Indicator Circuit
B0780 2016 GMC Sierra Code - Four Wheel Drive Low Range Indicator Circuit

Common Causes of B0780 2016 GMC Sierra

  1. Corroded or damaged wiring in the Four Wheel Drive Low Range Indicator Circuit
  2. Loose or poor connections in the circuit
  3. Faulty indicator switch
  4. Malfunctioning transfer case control module

Symptoms of B0780 2016 GMC Sierra

  1. Four Wheel Drive Low Range Indicator light stays on constantly
  2. Four Wheel Drive Low Range Indicator light does not illuminate when in low range mode
  3. Flickering Four Wheel Drive Low Range Indicator light
  4. Difficulty engaging or disengaging low range mode

How to Fix B0780 2016 GMC Sierra

  1. Begin by conducting a visual inspection of the Four Wheel Drive Low Range Indicator Circuit wiring and connectors to check for any visible damage or corrosion.
  2. Test the indicator switch to determine if it is functioning correctly.
  3. Use a multimeter to check for continuity in the circuit and verify proper voltage levels.
  4. If necessary, replace any damaged wiring, connectors, or faulty components identified during testing.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test the system to ensure the issue has been resolved.

Cost to Fix B0780 2016 GMC Sierra

The cost of repairing the Four Wheel Drive Low Range Indicator Circuit can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the repair costs for this type of issue can range from $150 to $500, including parts and labor. However, it is important to note that diagnostic time and labor rates at auto repair shops can vary, so it is advisable to get a specific estimate from a qualified mechanic based on your location and vehicle model.

Need more information about the B0780 2016 GMC Sierra code?

Need more information on how to fix the B0780 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0780 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0780 2016 GMC Sierra Code

1. What are common symptoms of OBDII code B0780 in a 2016 GMC Sierra?

- The most common symptom is the Four Wheel Drive Low Range indicator light staying illuminated on the dashboard when the system is not in Low Range mode.

2. What can cause the Four Wheel Drive Low Range Indicator Circuit issue in a 2016 GMC Sierra?

- Potential causes include a faulty indicator switch, wiring issues, or a malfunctioning control module related to the low range indicator.

3. How serious is the B0780 OBDII code in a 2016 GMC Sierra?

- While this code may not affect the drivability of the vehicle, it can lead to confusion about the actual operational status of the Four Wheel Drive Low Range system.

4. Can I continue driving my 2016 GMC Sierra with the Four Wheel Drive Low Range Indicator Circuit problem?

- It is generally safe to drive the vehicle with this issue, but it is recommended to have it diagnosed and repaired to ensure proper functionality of the Four Wheel Drive system.

5. How can I diagnose the B0780 code in my 2016 GMC Sierra?

- Diagnosing this code typically involves using a scan tool to check for the specific fault code, inspecting the wiring and connections related to the low range indicator circuit, and testing the indicator switch for proper operation.

6. Is it possible to repair the Four Wheel Drive Low Range Indicator Circuit issue in a 2016 GMC Sierra myself?

- Depending on your level of automotive knowledge and experience, you may be able to repair this issue yourself by replacing the faulty indicator switch or addressing any wiring issues. However, professional assistance is recommended for accurate diagnosis and repair.

7. How much does it cost to fix the B0780 OBDII code in a 2016 GMC Sierra?

- The cost of repairing this code can vary depending on the root cause of the issue. Simple fixes like replacing a switch may cost less, while complex wiring or module repairs can be more expensive. It is advisable to obtain quotes from reputable mechanics.

8. Can a faulty Four Wheel Drive Low Range Indicator Circuit impact other systems in my 2016 GMC Sierra?

- While the main impact is on the Four Wheel Drive system's indicator function, a malfunction in this circuit may potentially affect other related systems like the Four Wheel Drive control module.

9. Are there any tips to prevent the B0780 code from recurring in my 2016 GMC Sierra?

- To prevent the reoccurrence of this code, it is essential to ensure all electrical connections related to the Four Wheel Drive Low Range indicator circuit are secure and free of corrosion. Regular maintenance checks can help detect and address issues early.

10. How long does it typically take to repair the Four Wheel Drive Low Range Indicator Circuit problem in a 2016 GMC Sierra?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair. Simple fixes may be completed within a few hours, while more intricate repairs could take longer, potentially requiring a day or more.

Discuss the causes and fixes for B0780 2016 GMC Sierra OBDII Code

Submit a New Comment

Code B0780 2016 GMC Sierra comments

No comments found for this page.