AutoCodes – GMC – U3012 2016 GMC Sierra

U3012 2016 GMC Sierra Code - Control Module Improper Wake-Up Performance

Quick Answer

The internal fault detection is handled inside the device. Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, Control Module circuit poor electrical connection. 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: U3012 2016 GMC Sierra indicates Control Module Improper Wake-Up Performance.
Common causes: Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, Control Module circuit poor electrical connection.
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 Popularity 260

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U3012 2016 GMC Sierra Description

The internal fault detection is handled inside the device. The symptom byte information is for engineering reference only. No external circuit diagnosis is involved. The Diagnostic Trouble Code (DTC) will set when the device has detected an internal malfunction.

OBDII Code U3012 2016 GMC Sierra - Control Module Improper Wake-Up Performance - AutoCodes.com — U3012 2016 GMC Sierra Code - Control Module Improper Wake-Up Performance

What does this mean?

What are the Possible Causes of the DTC U3012 2016 GMC Sierra?

Faulty Control Module setting the code
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U3012 2016 GMC Sierra?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U3012 2016 GMC Sierra 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 U3012 2016 GMC Sierra code?

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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.

Frequently Asked Questions about U3012 2016 GMC Sierra Code

1. What are common symptoms of OBDII code U3012 in a 2016 GMC Sierra?

- Common symptoms include intermittent starting issues, loss of communication with various control modules, and illuminated warning lights on the dashboard.

2. What does the OBDII code U3012 for Control Module Improper Wake-Up Performance indicate in a 2016 GMC Sierra?

- This code indicates that the vehicle's control module is not waking up properly, leading to communication and performance issues.

3. What are possible causes of the U3012 code in a 2016 GMC Sierra?

- Potential causes include a faulty control module, wiring issues, software glitches, low battery voltage, or a malfunctioning ignition switch.

4. How can I diagnose the U3012 code in my 2016 GMC Sierra?

- Diagnosing the code typically involves checking for other related trouble codes, performing a thorough inspection of the control module and wiring, and testing the battery voltage.

5. Can I drive my 2016 GMC Sierra with the U3012 code?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to further electrical issues and potential safety hazards.

6. How can I repair the Control Module Improper Wake-Up Performance issue in my 2016 GMC Sierra?

- Repairing this issue may involve resetting the control module, repairing or replacing faulty wiring, updating software, or replacing the control module altogether.

7. Is it safe to clear the U3012 code in a 2016 GMC Sierra without fixing the underlying issue?

- It is not recommended to clear the code without addressing the root cause, as the problem may persist and lead to more severe issues in the future.

8. Can a DIY enthusiast fix the U3012 code in a 2016 GMC Sierra?

- While some simple troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing the Control Module Improper Wake-Up Performance issue may require specialized tools and expertise.

9. How much does it cost to fix the U3012 code in a 2016 GMC Sierra at a repair shop?

- The cost of fixing this issue can vary depending on the exact cause, but it may range from a few hundred to a few thousand dollars, including parts and labor.

10. How often does the U3012 code occur in 2016 GMC Sierra vehicles?

- The U3012 code for Control Module Improper Wake-Up Performance may occur sporadically in some vehicles, while others may experience it more frequently depending on driving conditions and maintenance history.