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B0780 2017 Chevrolet Silverado Code - Four Wheel Drive Low Range Indicator Circuit

Quick Answer

The B0780 diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates a problem with the Four Wheel Drive (4WD) Low Range Indicator Circuit. Common causes include Damaged wiring or connectors in the 4WD Low Range indicator circuit, Faulty indicator switch or sensor, Malfunctioning transfer case control module. 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 2017 Chevrolet Silverado indicates Four Wheel Drive Low Range Indicator Circuit.
Common causes
Common causes include Damaged wiring or connectors in the 4WD Low Range indicator circuit, Faulty indicator switch or sensor, Malfunctioning transfer case control module.
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 17, 2024
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Code B0780 2017 Chevrolet Silverado Description

The B0780 diagnostic trouble code (DTC) in a 2017 Chevrolet Silverado indicates a problem with the Four Wheel Drive (4WD) Low Range Indicator Circuit. This code specifically relates to the circuit responsible for illuminating the indicator light on the dashboard when the vehicle is in 4WD Low Range mode. When this code is triggered, it means that the control module has detected a malfunction in the circuit, which could lead to inaccurate or non-functional indicator lights.

OBDII Code B0780 2017 Chevrolet Silverado - Four Wheel Drive Low Range Indicator Circuit
B0780 2017 Chevrolet Silverado Code - Four Wheel Drive Low Range Indicator Circuit

Common Causes of B0780 2017 Chevrolet Silverado

  1. Damaged wiring or connectors in the 4WD Low Range indicator circuit.
  2. Faulty indicator switch or sensor.
  3. Malfunctioning transfer case control module.
  4. Defective indicator light bulb or assembly.

Symptoms of B0780 2017 Chevrolet Silverado

  1. Non-functional or inaccurate 4WD Low Range indicator light on the dashboard.
  2. Difficulty engaging or disengaging 4WD Low Range mode.
  3. Unexpected changes in vehicle performance or handling while in 4WD Low Range mode.
  4. Dashboard warning light related to the 4WD system.

How to Fix B0780 2017 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the wiring, connectors, and indicator switch to identify any visible damage or corrosion.
  2. Use a multimeter to test the continuity and voltage in the circuit to pinpoint the source of the issue.
  3. Replace any damaged wiring, connectors, or components as needed.
  4. Reset the control module and clear the DTC using a diagnostic scan tool.
  5. Test the 4WD Low Range system to ensure the indicator light functions correctly in all modes.

Cost to Fix B0780 2017 Chevrolet Silverado

The typical repair costs for addressing the B0780 code in a 2017 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes the cost of labor, which can vary between $80 and $150 per hour at most auto repair shops. It's advisable to consult with a professional mechanic to get an accurate quote based on your location and vehicle specifications.

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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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B0780 on a 2017 Chevrolet Silverado?

The common symptoms of code B0780 on a 2017 Chevrolet Silverado may include the Four Wheel Drive Low Range indicator light staying illuminated or not functioning properly.

2. What does the OBDII code B0780 indicate on a 2017 Chevrolet Silverado?

OBDII code B0780 on a 2017 Chevrolet Silverado indicates a malfunction in the Four Wheel Drive Low Range Indicator Circuit.

3. What are the possible causes of OBDII code B0780 on a 2017 Chevrolet Silverado?

Possible causes of code B0780 on a 2017 Chevrolet Silverado include a faulty indicator switch, wiring issues, or a malfunctioning control module.

4. How can I diagnose OBDII code B0780 on my 2017 Chevrolet Silverado?

Diagnosing code B0780 on a 2017 Chevrolet Silverado involves using a scan tool to check for the specific error code, inspecting the indicator switch and its wiring, and testing the control module for proper functionality.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code B0780?

It is generally safe to drive your 2017 Chevrolet Silverado with code B0780, but it is recommended to have the issue diagnosed and repaired to ensure the proper functioning of the Four Wheel Drive Low Range indicator.

6. How can I repair OBDII code B0780 on my 2017 Chevrolet Silverado?

Repairing code B0780 on a 2017 Chevrolet Silverado may involve replacing a faulty indicator switch, repairing damaged wiring, or addressing any issues with the control module as needed.

7. Is it possible to reset OBDII code B0780 on a 2017 Chevrolet Silverado without repairs?

While you can clear the error code using a scan tool, it is important to address the underlying issue causing code B0780 on your 2017 Chevrolet Silverado to prevent it from reoccurring.

8. Can extreme weather conditions trigger OBDII code B0780 on a 2017 Chevrolet Silverado?

Extreme weather conditions can potentially affect the Four Wheel Drive Low Range indicator circuit and contribute to the triggering of code B0780 on a 2017 Chevrolet Silverado.

9. How much does it typically cost to repair OBDII code B0780 on a 2017 Chevrolet Silverado?

The cost to repair code B0780 on a 2017 Chevrolet Silverado can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

10. Should I seek professional help to fix OBDII code B0780 on my 2017 Chevrolet Silverado?

If you are not familiar with automotive diagnostics and repairs, it is advisable to seek professional help to accurately diagnose and fix code B0780 on your 2017 Chevrolet Silverado.

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