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P2771 2016 Chevrolet Silverado Code - Four Wheel Drive Low Switch Circuit

Quick Answer

The P2771 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Four Wheel Drive Low Switch Circuit. Common causes include Faulty four-wheel drive low switch, Wiring issues or shorts in the circuit, Corrosion or poor connections in the circuit. 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
P2771 2016 Chevrolet Silverado indicates Four Wheel Drive Low Switch Circuit.
Common causes
Common causes include Faulty four-wheel drive low switch, Wiring issues or shorts in the circuit, Corrosion or poor connections in the circuit.
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 11, 2024
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Code P2771 2016 Chevrolet Silverado Description

The P2771 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado relates to the Four Wheel Drive Low Switch Circuit. This code indicates that there is a malfunction in the circuit responsible for engaging the four-wheel drive low mode in the vehicle. In a four-wheel drive system, the low range is used for increased torque and control in off-road or towing situations. When this circuit is not functioning properly, it can lead to issues with engaging or disengaging the four-wheel drive low mode, affecting the vehicle's performance and drivability.

OBDII Code P2771 2016 Chevrolet Silverado - Four Wheel Drive Low Switch Circuit
P2771 2016 Chevrolet Silverado Code - Four Wheel Drive Low Switch Circuit

Common Causes of P2771 2016 Chevrolet Silverado

  1. Faulty four-wheel drive low switch
  2. Wiring issues or shorts in the circuit
  3. Corrosion or poor connections in the circuit
  4. Defective transfer case control module
  5. Mechanical issues in the transfer case or drivetrain components

Symptoms of P2771 2016 Chevrolet Silverado

  1. Check Engine Light is illuminated
  2. Difficulty engaging or disengaging four-wheel drive low mode
  3. Unusual noises or vibrations when attempting to switch to four-wheel drive low
  4. Limited traction or control in off-road or towing situations
  5. Decreased torque and power output

How to Fix P2771 2016 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the wiring harness, connectors, and switch for any signs of damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity and voltage of the circuit to pinpoint the source of the issue.
  3. Replace the faulty four-wheel drive low switch if it is determined to be the cause of the problem.
  4. Repair or replace any damaged wiring or connectors in the circuit.
  5. If the issue persists, further diagnostic testing may be necessary to identify potential component failures in the transfer case or control module.

Cost to Fix P2771 2016 Chevrolet Silverado

The cost of repairing the Four Wheel Drive Low Switch Circuit can vary depending on the specific cause of the issue. In general, the cost of parts such as a new switch or wiring harness can range from $50 to $200, while labor costs at an auto repair shop may add another $100 to $300 to the total bill. Keep in mind that diagnostic time and labor rates can vary, so it is advisable to check with local auto repair shops for a more accurate estimate.

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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 P2771 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2771 in a 2016 Chevrolet Silverado?

The common symptoms of code P2771 include difficulty shifting into four-wheel drive low mode, illuminated warning lights on the dashboard, and potential loss of functionality in the four-wheel drive system.

2. What does the OBDII code P2771 in a 2016 Chevrolet Silverado indicate?

Code P2771 indicates a malfunction in the Four Wheel Drive Low Switch Circuit of the vehicle.

3. What are some possible causes of OBDII code P2771 in a 2016 Chevrolet Silverado?

Possible causes of code P2771 include a faulty four-wheel drive low switch, damaged wiring or connectors in the circuit, or issues with the transfer case control module.

4. How can I diagnose the OBDII code P2771 in my 2016 Chevrolet Silverado?

Diagnosing code P2771 typically involves using an OBDII scanner to retrieve the fault code, inspecting the wiring and connectors related to the four-wheel drive low switch, and testing the switch itself for proper functionality.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P2771?

It is not recommended to continue driving the vehicle with code P2771 present, as it can lead to further damage to the four-wheel drive system and potentially compromise vehicle safety.

6. How can I repair OBDII code P2771 in my 2016 Chevrolet Silverado?

Repairing code P2771 may involve replacing the faulty four-wheel drive low switch, repairing damaged wiring or connectors, or reprogramming the transfer case control module to address the issue.

7. Is it possible to reset OBDII code P2771 in a 2016 Chevrolet Silverado without fixing the underlying issue?

Resetting the code without addressing the underlying issue will only temporarily clear the fault code, and the problem is likely to reoccur. It is essential to diagnose and repair the root cause of the code.

8. Can extreme weather conditions trigger OBDII code P2771 in a 2016 Chevrolet Silverado?

Extreme weather conditions, such as water intrusion or exposure to extreme temperatures, can potentially cause issues with the four-wheel drive low switch circuit, leading to the activation of code P2771.

9. How long does it typically take to repair OBDII code P2771 in a 2016 Chevrolet Silverado?

The repair time for code P2771 can vary depending on the specific cause of the issue. Simple fixes like replacing a faulty switch may take a few hours, while more complex wiring or module repairs could take longer.

10. Should I seek professional assistance to repair OBDII code P2771 in my 2016 Chevrolet Silverado?

Due to the complexity of diagnosing and repairing issues related to the four-wheel drive system and electrical circuits, it is advisable to seek the help of a qualified mechanic or dealership to address OBDII code P2771 in your Chevrolet Silverado.

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