Engine-CodesGMC – P0606 2015 GMC Sierra

P0606 2015 GMC Sierra Code - Control Module Processor Performance

Quick Answer

The P0606 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates that there is a performance issue with the control module processor. Common causes include Electrical interference or voltage spikes, Software glitches or corrupted programming, Hardware malfunction within the 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
P0606 2015 GMC Sierra indicates Control Module Processor Performance.
Common causes
Common causes include Electrical interference or voltage spikes, Software glitches or corrupted programming, Hardware malfunction within the 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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0606 2015 GMC Sierra Description

The P0606 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates that there is a performance issue with the control module processor. The control module is a crucial component of the vehicle's electronic system, responsible for managing various functions such as engine performance, transmission operation, emissions control, and more. When the processor within the control module malfunctions or fails to operate as intended, it can lead to a range of issues affecting the vehicle's overall performance and drivability.

OBDII Code P0606 2015 GMC Sierra - Control Module Processor Performance
P0606 2015 GMC Sierra Code - Control Module Processor Performance

Common Causes of P0606 2015 GMC Sierra

  1. Electrical interference or voltage spikes
  2. Software glitches or corrupted programming
  3. Hardware malfunction within the control module
  4. Water damage or exposure to moisture
  5. Poor connections or wiring issues

Symptoms of P0606 2015 GMC Sierra

  1. Check Engine Light illuminated on the dashboard
  2. Engine misfires or rough idling
  3. Reduced fuel efficiency
  4. Stalling or hesitation during acceleration
  5. Inability to start the vehicle

How to Fix P0606 2015 GMC Sierra

  1. Begin by using a diagnostic scanner to retrieve and record the trouble codes, including P0606.
  2. Inspect the control module connections and wiring for any signs of damage or corrosion.
  3. Check for any software updates or reprogramming available for the control module.
  4. If necessary, replace the control module with a new or remanufactured unit.
  5. Clear the trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0606 2015 GMC Sierra

The typical repair costs for addressing a P0606 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a control module can range from $500 to $1000, including parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate.

Tech Notes for P0606 2015 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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