AutoCodes – GMC – P06AC GMC

P06AC GMC Code - Control Module Power Up Temperature Sensor Performance

Quick Answer

The Transmission Control Module (TCM) power-up temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. Common causes include Faulty Control Solenoid Valve Assembly. 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: P06AC GMC indicates Control Module Power Up Temperature Sensor Performance.
Common causes: Common causes include Faulty Control Solenoid Valve Assembly.
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 496

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 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P06AC GMC Description

The Transmission Control Module (TCM) power-up temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. The Transmission Control Module power-up temperature sensor provides the temperature of the Transmission Control Module when the Transmission Control Module power is on. This temperature reading is used in various shifting and diagnostic routines and also to protect the control solenoid valve assembly and Transmission Control Module. This fault is handled inside the Transmission Control Module and no external circuits are involved. The Diagnostic Trouble Code (DTC) will be set if the TCM detects an 8 - 10°C (14 - 18°F) or greater difference between the TCM substrate temperature and TCM power up the temperature, which depends on the average transmission fluid temperature, TCM substrate temperature, and TCM power up the temperature.

OBDII Code P06AC GMC - Control Module Power Up Temperature Sensor Performance - AutoCodes.com — P06AC GMC Code - Control Module Power Up Temperature Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P06AC GMC?

Faulty Control Solenoid Valve Assembly

How to Fix the DTC P06AC 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P06AC 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 P06AC GMC code?

Need more information on how to fix the P06AC GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific GMC Models

P06AC 2014 GMC Sierra — Control Module Power Up Temperature Sensor Performance
P06AC 2015 GMC Sierra — Control Module Power Up Temperature Sensor Performance
P06AC 2016 GMC Sierra — Control Module Power Up Temperature Sensor Performance
P06AC 2017 GMC Sierra — Control Module Power Up Temperature Sensor Performance
P06AC 2018 GMC Sierra — Control Module Power Up Temperature Sensor 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 P06AC GMC Code

1. What does the OBDII code P06AC mean on a GMC vehicle?

The P06AC code indicates an issue with the Control Module Power Up Temperature Sensor's performance, which monitors temperature-related data when the module powers up.

2. What are the common symptoms of the P06AC code on a GMC?

Symptoms may include an illuminated check engine light, poor engine performance, difficulty starting, or inaccurate temperature readings.

3. What causes the P06AC code to appear on a GMC?

Common causes include a faulty temperature sensor, damaged wiring or connectors, issues with the powertrain control module (PCM), or software glitches.

4. Can I continue driving my GMC with the P06AC code?

While the vehicle may still operate, driving with this code could lead to further engine performance issues or damage. It's best to diagnose and repair it promptly.

5. How do I diagnose the P06AC code on a GMC?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the temperature sensor and related wiring for damage, and checking the PCM for faults.

6. How do I fix the P06AC code on my GMC?

Repairs may include replacing the faulty temperature sensor, repairing or replacing damaged wiring, or reprogramming or replacing the PCM if necessary.

7. How much does it cost to repair the P06AC code on a GMC?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the sensor, wiring, or PCM.

8. Can a faulty battery cause the P06AC code on a GMC?

Yes, a weak or failing battery can cause power-related issues that may trigger this code, so checking the battery is recommended.

9. Do I need to update the PCM software to fix the P06AC code?

In some cases, a PCM software update may resolve the issue if the problem is caused by a programming glitch.

10. Is the P06AC code a common issue on GMC vehicles?

While not extremely common, it can occur, especially in older GMC models or those with electrical system issues. Regular maintenance can help prevent it.