AutoCodes – Chevrolet – U3012 Chevrolet

U3012 Chevrolet 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 Chevrolet 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 804

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 Chevrolet 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 Chevrolet - Control Module Improper Wake-Up Performance - AutoCodes.com — U3012 Chevrolet Code - Control Module Improper Wake-Up Performance

What does this mean?

What are the Possible Causes of the DTC U3012 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

Need more information on how to fix the U3012 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U3012 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U3012 2014 Chevrolet Silverado — Control Module Improper Wake-Up Performance
U3012 2015 Chevrolet Silverado — Control Module Improper Wake-Up Performance
U3012 2016 Chevrolet Silverado — Control Module Improper Wake-Up Performance
U3012 2017 Chevrolet Silverado — Control Module Improper Wake-Up Performance
U3012 2018 Chevrolet Silverado — Control Module Improper Wake-Up Performance

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 Chevrolet Code

1. What does the OBDII code U3012 mean on a Chevrolet?

The U3012 code indicates that there is an issue with the â€œControl Module Improper Wake-Up Performance,â€ which means that a control module in the vehicle is not waking up from its sleep mode as expected.

2. What are the common symptoms of code U3012 in a Chevrolet?

Symptoms may include the vehicle's inability to start, erratic behavior of the dashboard lights or other electronic components, and possible issues with the performance of features controlled by the affected module.

3. What causes the OBDII code U3012 to appear on a Chevrolet?

Common causes include a faulty control module, poor electrical connections, or low battery voltage which can prevent the control module from waking up properly.

4. How can I fix the OBDII code U3012 in my Chevrolet?

Repairs can involve checking and replacing the faulty control module, securing loose connections, or addressing any issues with the vehicleâ€™s battery and charging system.

5. Is it safe to drive a Chevrolet with the code U3012?

While it might be possible to drive, it's not recommended as the vehicle may experience unexpected behaviors or failure in critical systems, potentially leading to safety issues.

6. What tools are required to diagnose the U3012 code on a Chevrolet?

A professional-grade OBDII scanner, a multimeter, and possibly a manufacturer-specific scanner or software may be needed to properly diagnose and address this issue.

7. How urgent is it to address the U3012 code in a Chevrolet?

It should be addressed as soon as possible since the underlying issue can affect the vehicleâ€™s operational safety and could lead to other complications with electronic systems.

8. Can a weak battery cause the U3012 code on a Chevrolet?

Yes, a weak or failing battery can lead to insufficient power for the control module's proper wake-up and function, potentially triggering this code.

9. Which control modules could be affected by the U3012 code in a Chevrolet?

Any electronic control module in the vehicle can be affected, but commonly it involves critical systems like the engine control module (ECM), transmission control module (TCM), or body control module (BCM).

10. What steps should be taken if the U3012 code reappears after clearing it on a Chevrolet?

If the code reappears, further in-depth diagnostics are necessary to check for intermittent wiring issues, faulty control modules, or underlying electrical problems that were not resolved with initial repairs.