Engine-CodesGMC – P0606 2014 GMC Sierra

P0606 2014 GMC Sierra Code - Control Module Processor Performance

Quick Answer

The P0606 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Control Module Processor Performance. Common causes include Software malfunction or corruption, Hardware failure within the ECM/PCM, Wiring issues or poor connections. 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
P0606 2014 GMC Sierra indicates Control Module Processor Performance.
Common causes
Common causes include Software malfunction or corruption, Hardware failure within the ECM/PCM, Wiring issues or poor connections.
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 10, 2024
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Code P0606 2014 GMC Sierra Description

The P0606 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Control Module Processor Performance. This code indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) is experiencing a performance issue with its internal processor. Essentially, the ECM/PCM is not functioning as it should, which can lead to various problems within the vehicle's systems.

OBDII Code P0606 2014 GMC Sierra - Control Module Processor Performance
P0606 2014 GMC Sierra Code - Control Module Processor Performance

Common Causes of P0606 2014 GMC Sierra

  1. Software malfunction or corruption
  2. Hardware failure within the ECM/PCM
  3. Wiring issues or poor connections
  4. Environmental factors, such as moisture or heat damage
  5. Vehicle battery voltage irregularities

Symptoms of P0606 2014 GMC Sierra

  1. Check Engine Light illuminated on the dashboard
  2. Engine performance issues, such as hesitation or rough idling
  3. Transmission shifting problems
  4. Reduced fuel efficiency
  5. Vehicle stalling or difficulty starting

How to Fix P0606 2014 GMC Sierra

  1. Diagnose the issue using a scan tool to retrieve the trouble codes and perform a thorough inspection of the ECM/PCM.
  2. Check for any software updates or recalibrations available from the manufacturer to address known issues.
  3. Inspect wiring harnesses and connections for any signs of damage or corrosion, repairing or replacing as necessary.
  4. Test the vehicle's battery and charging system to ensure proper voltage levels.
  5. If the ECM/PCM is determined to be faulty, it may need to be replaced with a new unit programmed to the vehicle's specifications.

Cost to Fix P0606 2014 GMC Sierra

The cost of repairing a P0606 code on a 2014 GMC Sierra can vary depending on the exact cause of the issue and the labor rates in your area. Typically, the repair could range from $200 to $800, including parts and labor. It's essential to consult with a reputable auto repair shop to get an accurate estimate based on your specific situation. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to shop around for the best deal.

Tech Notes for P0606 2014 GMC Sierra

Check the Powertrain Control Module (PCM) fuse, if the fuse is OK, then try erasing the code first and if the code comes back you may have to reprogram or replace the PCM.



There is a Factory Service Bulletin for the following Chevrolet models:

2010 Chevrolet Express

2011 Chevrolet Express

2011 Chevrolet Silverado

Chevrolet Factory Service Bulletin OBDII Code P0606

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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.

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