Engine-CodesGMC – P0602 2016 GMC Sierra

P0602 2016 GMC Sierra Code - Control Module Not Programmed

Quick Answer

The P0602 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the control module in the vehicle has not been programmed correctly. Common causes include Incorrect software update or calibration, Programming error during a previous repair or maintenance procedure, Faulty 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
P0602 2016 GMC Sierra indicates Control Module Not Programmed.
Common causes
Common causes include Incorrect software update or calibration, Programming error during a previous repair or maintenance procedure, Faulty 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 12, 2024
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Code P0602 2016 GMC Sierra Description

The P0602 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the control module in the vehicle has not been programmed correctly. The control module, also known as the engine control module (ECM) or powertrain control module (PCM), is essentially the brain of the vehicle's engine management system. It is responsible for controlling various functions within the vehicle, such as fuel injection, ignition timing, and emissions control. When the control module is not programmed correctly, it can lead to a variety of issues that can affect the vehicle's performance and overall functionality.

OBDII Code P0602 2016 GMC Sierra - Control Module Not Programmed
P0602 2016 GMC Sierra Code - Control Module Not Programmed

Common Causes of P0602 2016 GMC Sierra

  1. Incorrect software update or calibration
  2. Programming error during a previous repair or maintenance procedure
  3. Faulty control module
  4. Electrical issues, such as a poor connection or wiring problem
  5. Aftermarket modifications or installations affecting the control module

Symptoms of P0602 2016 GMC Sierra

  1. Engine misfires or rough idling
  2. Difficulty starting the vehicle
  3. Reduced fuel efficiency
  4. Illumination of the check engine light
  5. Stalling or hesitation during acceleration

How to Fix P0602 2016 GMC Sierra

  1. Retrieve the specific error codes using an OBD-II scanner to confirm P0602.
  2. Check for any recent software updates or modifications that may have affected the control module.
  3. Perform a reprogramming or recalibration of the control module using manufacturer-approved software and tools.
  4. Inspect the wiring and connections related to the control module for any damage or corrosion.
  5. If necessary, replace the control module with a new one and program it correctly.

Cost to Fix P0602 2016 GMC Sierra

The cost of repairing a P0602 code on a 2016 GMC Sierra can vary depending on the specific underlying issue and the labor rates in your area. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to get a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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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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