AutoCodes – Chevrolet – B0770 2014 Chevrolet Silverado

B0770 2014 Chevrolet Silverado Code - All Wheel Drive Indicator Circuit

Quick Answer

The All Wheel Drive (AWD/4WD Auto) 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: B0770 2014 Chevrolet Silverado indicates All Wheel Drive 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.

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Code Popularity 328

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0770 2014 Chevrolet Silverado Description

The All Wheel Drive (AWD/4WD Auto) indicator circuit consists of a Light Emitting Diode (LED) feed circuit, a LED, and a LED control circuit. The indicator dimming control circuit is the LED feed circuit and continuously supplies B+ to the 2WD HI, 4WD Auto, 4WD HI, and 4WD LO LEDs. When the AWD mode has been selected by the driver, the transfer case shift control module (TCCM) provides a ground through the AWD indicator control circuit illuminating the LED.
The TCCM tests the AWD indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the indicator dimming control circuit by grounding the AWD indicator control circuit for 2 seconds during the Bulb Test at key ON.

OBDII Code B0770 2014 Chevrolet Silverado - All Wheel Drive Indicator Circuit - AutoCodes.com — B0770 2014 Chevrolet Silverado Code - All Wheel Drive Indicator Circuit

What does this mean?

What are the Possible Causes of the DTC B0770 2014 Chevrolet Silverado?

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 B0770 2014 Chevrolet Silverado?

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 B0770 2014 Chevrolet Silverado 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 B0770 2014 Chevrolet Silverado code?

Need more information on how to fix the B0770 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 B0770 2014 Chevrolet Silverado Code

1. What does the OBDII code B0770 on a 2014 Chevrolet Silverado indicate?

The code B0770 for a 2014 Chevrolet Silverado relates to the All Wheel Drive (AWD) Indicator Circuit.

2. What are the common symptoms of a B0770 OBDII code in a 2014 Chevrolet Silverado?

Common symptoms include the AWD indicator light not functioning properly or staying on when it shouldn't.

3. What are the possible causes of the OBDII code B0770 on a 2014 Chevrolet Silverado?

Potential causes include a faulty AWD indicator switch, wiring issues, or a malfunctioning control module.

4. How can I diagnose the B0770 OBDII code in my 2014 Chevrolet Silverado?

Diagnosing the issue involves checking the AWD indicator switch, inspecting the wiring for any damage, and testing the control module for proper functioning.

5. Can I continue driving my 2014 Chevrolet Silverado with the B0770 OBDII code present?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the AWD system functions correctly.

6. How can I repair the B0770 OBDII code on my 2014 Chevrolet Silverado?

Repair options may include replacing the AWD indicator switch, repairing any damaged wiring, or reprogramming the control module.

7. Is it possible to reset the B0770 OBDII code on a 2014 Chevrolet Silverado without repairs?

Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely reoccur.

8. Can extreme weather conditions trigger the B0770 OBDII code on a 2014 Chevrolet Silverado?

Extreme weather conditions can sometimes affect the AWD indicator circuit, so it's essential to ensure all components are functioning correctly.

9. How much does it typically cost to repair the B0770 OBDII code in a 2014 Chevrolet Silverado?

The cost of repairs can vary depending on the specific issue, but it's advisable to consult a mechanic for an accurate estimate.

10. Will the B0770 OBDII code affect the overall performance of my 2014 Chevrolet Silverado?

While the code itself may not impact performance, ensuring the AWD system is functioning correctly is crucial for optimal vehicle operation and safety.