AutoCodes – GMC – P0606 GMC

P0606 GMC Code - Control Module Processor Performance

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine 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 GMC indicates Control Module Processor Performance.
Common causes
Common causes include Low battery voltage, Reprogram Engine Control Module (ECM), Faulty Engine 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 24,353
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 29, 2024
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Code P0606 GMC Description

This diagnostic applies to internal microprocessor integrity conditions within the Engine Control Module (ECM). This diagnostic also addresses if the ECM is not programmed. The ECM monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an internal failure or incomplete programming for more than 10 s.
OBDII Code P0606 GMC - Control Module Processor Performance - AutoCodes.com
P0606 GMC Code - Control Module Processor Performance

What are the Possible Causes of the DTC P0606 GMC?

  • Low battery voltage
  • Reprogram Engine Control Module (ECM)
  • Faulty Engine Control Module
  • Engine Control Module harness is open or shorted
  • Engine Control Module circuit poor electrical connection

How to Fix the DTC P0606 GMC?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0606 GMC 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 P0606 GMC code?

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Need Help with the Code?

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Information for Specific GMC Models

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 P0606 GMC Code

1. What are the common symptoms of OBDII code P0606 in a GMC vehicle?

The common symptoms of OBDII code P0606 in a GMC vehicle include engine stalling, rough idling, poor acceleration, and the illumination of the Check Engine light.

2. What are the possible causes of OBDII code P0606 in a GMC vehicle?

Possible causes of OBDII code P0606 in a GMC vehicle include a faulty Engine Control Module (ECM), damaged wiring or connectors, software issues, or a poor electrical connection.

3. How serious is OBDII code P0606 in a GMC vehicle?

OBDII code P0606 in a GMC vehicle should be addressed promptly as it can lead to performance issues and potential long-term damage to the vehicle's engine control system if left unresolved.

4. How can I diagnose OBDII code P0606 in my GMC vehicle?

Diagnosing OBDII code P0606 in a GMC vehicle typically involves using an OBDII scanner to retrieve the specific code, checking for any related symptoms, and inspecting the ECM and its connections for any visible signs of damage.

5. Can I drive my GMC vehicle with OBDII code P0606?

It is not recommended to drive your GMC vehicle with OBDII code P0606 as it can cause further damage to the engine control system and potentially lead to unsafe driving conditions.

6. How can I repair OBDII code P0606 in my GMC vehicle?

Repairing OBDII code P0606 in a GMC vehicle may involve replacing the Engine Control Module (ECM) if it is determined to be faulty, repairing or replacing damaged wiring or connectors, updating the software, or ensuring a proper electrical connection.

7. Can a DIY enthusiast fix OBDII code P0606 in a GMC vehicle?

While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing OBDII code P0606 in a GMC vehicle may require specialized tools and expertise, so it is recommended to consult a professional mechanic.

8. How much does it cost to repair OBDII code P0606 in a GMC vehicle?

The cost to repair OBDII code P0606 in a GMC vehicle can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates of the repair shop. It is advisable to get a few quotes from different mechanics.

9. Are there any preventive measures to avoid OBDII code P0606 in a GMC vehicle?

Regular maintenance, such as keeping the engine control system clean and well-maintained, ensuring proper electrical connections, and promptly addressing any warning signs or symptoms, can help prevent OBDII code P0606 in a GMC vehicle.

10. How long does it take to repair OBDII code P0606 in a GMC vehicle?

The time it takes to repair OBDII code P0606 in a GMC vehicle can vary depending on the specific cause of the issue, the availability of parts, and the workload of the repair shop. It is best to consult with the mechanic for an estimated timeframe.

Discuss the causes and fixes for P0606 GMC OBDII Code

  • where is this part located? inside or outside the vehicle?

  • What model and year is your GMC??

  • I have a 2008 GMC Sierra z71 4x4 1/2 ton. It's throwing this code. Where can I find this and how can I replace it? It is also throwing codes P0641 and P0449. Any help would be greatly appreciated. There's not a dealership in 50 miles that isn't at least 5 days out. I need this pickup in service. Thanks.

  • You may have two different problems. The P0606 and P0641 point to a possible bad Powertrain Control Module (PCM). It may require replace the PCM or reflash get it reflash by the dealer. The P0449 code is for the EVAP system. Follow the link for more information.

    P0449 GMC - Evaporative Emission Vent Valve Solenoid Malfunction
    Read more: https://www.autocodes.com/p04...

    P0641 GMC - 5 Volt Reference Voltage Incorrect
    Read more: https://www.autocodes.com/p06...

    https://www.youtube.com/wat...

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