Engine-CodesChevrolet – P279A 2014 Chevrolet Silverado

P279A 2014 Chevrolet Silverado Code - Four Wheel Drive High Range Performance

Quick Answer

The P279A diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado relates to the Four Wheel Drive High Range Performance. Common causes include Faulty transfer case motor or actuator, Electrical issues such as a wiring harness fault or connection problem, Low or contaminated transfer case fluid. 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
P279A 2014 Chevrolet Silverado indicates Four Wheel Drive High Range Performance.
Common causes
Common causes include Faulty transfer case motor or actuator, Electrical issues such as a wiring harness fault or connection problem, Low or contaminated transfer case fluid.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P279A 2014 Chevrolet Silverado Description

The P279A diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado relates to the Four Wheel Drive High Range Performance. This code indicates that there is a performance issue with the high range function of the four-wheel-drive system in the vehicle. The high range setting is typically used for driving at higher speeds on surfaces with low traction, such as snow or loose gravel. When this system is not functioning properly, it can lead to decreased performance and potential safety concerns, especially in adverse driving conditions.

OBDII Code P279A 2014 Chevrolet Silverado - Four Wheel Drive High Range Performance
P279A 2014 Chevrolet Silverado Code - Four Wheel Drive High Range Performance

Common Causes of P279A 2014 Chevrolet Silverado

  1. Faulty transfer case motor or actuator.
  2. Electrical issues such as a wiring harness fault or connection problem.
  3. Low or contaminated transfer case fluid.
  4. Mechanical issues within the transfer case itself, such as worn gears or bearings.
  5. Software or calibration issues with the four-wheel-drive system control module.

Symptoms of P279A 2014 Chevrolet Silverado

  1. Difficulty engaging or disengaging the four-wheel-drive high range setting.
  2. Grinding or clunking noises when shifting into high range.
  3. Dashboard warning light indicating a four-wheel-drive system malfunction.
  4. Reduced traction or stability when driving in high range mode.
  5. Decreased overall performance and responsiveness of the four-wheel-drive system.

How to Fix P279A 2014 Chevrolet Silverado

  1. Begin by conducting a thorough diagnosis of the four-wheel-drive system using a diagnostic scanner to retrieve the specific trouble codes and pinpoint the exact cause of the performance issue.
  2. Check the transfer case motor or actuator for proper operation and replace if necessary.
  3. Inspect the transfer case fluid level and condition, topping off or replacing as needed.
  4. Verify the integrity of the electrical connections and wiring harness related to the four-wheel-drive system, addressing any faults or issues found.
  5. Test the system after repairs are completed to ensure proper functionality and clear any remaining trouble codes.

Cost to Fix P279A 2014 Chevrolet Silverado

The cost of repairing a P279A code on a 2014 Chevrolet Silverado can vary depending on the root cause of the issue and the extent of the repairs needed. On average, you can expect to pay anywhere from $200 to $800 for parts and labor to address this specific problem. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on various factors, so it's advisable to obtain quotes from multiple sources before proceeding with the repair. Additionally, the cost may be higher if any additional components or services are required to fully resolve the four-wheel-drive high range performance issue.

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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 P279A 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P279A in a 2014 Chevrolet Silverado?

- Common symptoms include difficulty engaging or disengaging four-wheel drive high range, illuminated warning lights on the dashboard, and reduced vehicle performance.

2. What can cause the OBDII code P279A in a 2014 Chevrolet Silverado?

- The code P279A is typically triggered by issues with the four-wheel drive system, such as a faulty transfer case actuator, damaged wiring, or a malfunctioning transfer case control module.

3. How can I diagnose the OBDII code P279A in my 2014 Chevrolet Silverado?

- Diagnosing the code P279A involves using a diagnostic scanner to retrieve the specific fault codes stored in the vehicle's computer system related to the four-wheel drive system. Additionally, a visual inspection of the components and their connections may be necessary.

4. Can I still drive my 2014 Chevrolet Silverado with the OBDII code P279A present?

- It is not recommended to drive your vehicle with the code P279A present, as it can lead to further damage to the four-wheel drive system and potentially compromise the vehicle's safety and performance.

5. How can I repair the OBDII code P279A in my 2014 Chevrolet Silverado?

- Repairing the code P279A may involve replacing the transfer case actuator, repairing any damaged wiring, or reprogramming the transfer case control module. It is advisable to consult a professional mechanic for an accurate diagnosis and proper repair.

6. Is the OBDII code P279A a serious issue in a 2014 Chevrolet Silverado?

- Yes, the OBDII code P279A should be addressed promptly to ensure the proper functioning of the four-wheel drive system and prevent any potential safety hazards while driving.

7. Are there any DIY tips for troubleshooting the OBDII code P279A in a 2014 Chevrolet Silverado?

- While basic troubleshooting steps like checking the fuse related to the four-wheel drive system or inspecting the wiring connections can be done by DIY enthusiasts, complex repairs and diagnosis should be left to professional mechanics.

8. Is it common for the OBDII code P279A to reoccur in a 2014 Chevrolet Silverado after repair?

- If the root cause of the code P279A is not properly addressed during repair, there is a possibility for it to reoccur. It is crucial to ensure a thorough diagnosis and comprehensive repair to prevent the code from coming back.

9. Will resetting the OBDII code P279A in my 2014 Chevrolet Silverado make it go away permanently?

- Simply resetting the code P279A without addressing the underlying issue will not make it go away permanently. The root cause of the problem must be identified and repaired to prevent the code from reappearing.

10. How much can I expect to pay for repairing the OBDII code P279A in a 2014 Chevrolet Silverado?

- The cost of repairing the code P279A can vary depending on the extent of the issue, parts needed, and labor rates. It is advisable to obtain multiple quotes from reputable mechanics to get an accurate estimate.

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