P0606 2018 GMC Sierra Code - Control Module Processor Performance
Quick Answer
The P0606 diagnostic trouble code (DTC) for a 2018 GMC Sierra refers to a Control Module Processor Performance issue. Common causes include Electrical interference from aftermarket accessories, Software glitches or corrupted programming, Faulty ECM/PCM. 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 2018 GMC Sierra indicates Control Module Processor Performance.
- Common causes
- Common causes include Electrical interference from aftermarket accessories, Software glitches or corrupted programming, Faulty ECM/PCM.
- 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.
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Code P0606 2018 GMC Sierra Description
The P0606 diagnostic trouble code (DTC) for a 2018 GMC Sierra refers to a Control Module Processor Performance issue. This code indicates that the Engine Control Module (ECM) or Powertrain Control Module (PCM) is experiencing a performance problem with its internal processor. The ECM/PCM is essentially the brain of the vehicle's engine management system, responsible for controlling various functions such as fuel injection, ignition timing, and emissions control.
Common Causes of P0606 2018 GMC Sierra
- Electrical interference from aftermarket accessories
- Software glitches or corrupted programming
- Faulty ECM/PCM
- Wiring harness or connector issues
- Voltage spikes or fluctuations in the electrical system
Symptoms of P0606 2018 GMC Sierra
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Engine misfires or rough idling
- Stalling or hesitation during acceleration
- Vehicle may fail to start
How to Fix P0606 2018 GMC Sierra
- Diagnose the P0606 code using a scan tool to retrieve freeze frame data and pinpoint the exact cause of the issue.
- Inspect the wiring harness and connectors for any damage or corrosion, repairing or replacing as necessary.
- Check for any aftermarket accessories causing electrical interference and remove if needed.
- Update the ECM/PCM software with the latest manufacturer-approved calibration.
- If the ECM/PCM is found to be faulty, replace it with a new unit and program it to the vehicle.
Cost to Fix P0606 2018 GMC Sierra
The typical repair costs for addressing a P0606 code on a 2018 GMC Sierra can range from $200 to $600, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to inquire about local rates for a more accurate estimate.
Tech Notes for P0606 2018 GMC Sierra
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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