AutoCodes – GMC – P27AC 2014 GMC Sierra

P27AC 2014 GMC Sierra Code - Transmission Control Solenoid Valve 6 Calibration Incorrect

Quick Answer

The Transmission Control Solenoid Valve 1, 2, 3, 4, 5, 6, 7 have a unique current versus oil pressure characteristic that is used to properly upshift or downshift the transmission. Common causes include Solenoid Valve Characterization Reprogramming. 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
P27AC 2014 GMC Sierra indicates Transmission Control Solenoid Valve 6 Calibration Incorrect.
Common causes
Common causes include Solenoid Valve Characterization Reprogramming.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 137
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 22, 2022
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P27AC 2014 GMC Sierra Description

The Transmission Control Solenoid Valve 1, 2, 3, 4, 5, 6, 7 have a unique current versus oil pressure characteristic that is used to properly upshift or downshift the transmission. The data for each solenoid valve is programmed into the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Solenoid Valve Calibration Data has not been programmed.
OBDII Code P27AC 2014 GMC Sierra - Transmission Control Solenoid Valve 6 Calibration Incorrect - AutoCodes.com
P27AC 2014 GMC Sierra Code - Transmission Control Solenoid Valve 6 Calibration Incorrect

What are the Possible Causes of the DTC P27AC 2014 GMC Sierra?

  • Solenoid Valve Characterization Reprogramming

How to Fix the DTC P27AC 2014 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 P27AC 2014 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 P27AC 2014 GMC Sierra code?

Need more information on how to fix the P27AC 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P27AC 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P27AC 2014 GMC Sierra Code

What are the common symptoms of OBDII code P27AC in a 2014 GMC Sierra related to Transmission Control Solenoid Valve 6 Calibration Incorrect?

The common symptoms of OBDII code P27AC in a 2014 GMC Sierra may include rough shifting, transmission slipping, decreased fuel efficiency, and the Check Engine light being illuminated.

What are the possible causes of OBDII code P27AC in a 2014 GMC Sierra indicating Transmission Control Solenoid Valve 6 Calibration Incorrect?

Possible causes of OBDII code P27AC in a 2014 GMC Sierra can include a faulty transmission control solenoid valve, issues with the transmission control module, electrical problems, or calibration errors within the transmission system.

How can I diagnose OBDII code P27AC in my 2014 GMC Sierra related to Transmission Control Solenoid Valve 6 Calibration Incorrect?

Diagnosing OBDII code P27AC in a 2014 GMC Sierra involves using an OBDII scanner to retrieve the specific code, conducting a visual inspection of the transmission components, checking the transmission fluid level and condition, and performing a calibration check on the solenoid valve.

What are some repair tips for fixing OBDII code P27AC in a 2014 GMC Sierra indicating Transmission Control Solenoid Valve 6 Calibration Incorrect?

Repair tips for addressing OBDII code P27AC in a 2014 GMC Sierra include replacing the faulty transmission control solenoid valve, updating the transmission control module software, checking and repairing any damaged wiring or connectors, and recalibrating the transmission system.

Is it safe to continue driving my 2014 GMC Sierra with OBDII code P27AC related to Transmission Control Solenoid Valve 6 Calibration Incorrect?

It is not recommended to continue driving your 2014 GMC Sierra with OBDII code P27AC related to Transmission Control Solenoid Valve 6 Calibration Incorrect. Continuing to drive with this issue can potentially cause further damage to the transmission system and lead to more costly repairs.

How much does it typically cost to repair OBDII code P27AC in a 2014 GMC Sierra indicating Transmission Control Solenoid Valve 6 Calibration Incorrect?

The cost to repair OBDII code P27AC in a 2014 GMC Sierra can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to repair it yourself or take it to a professional mechanic. Costs may range from $200 to $800 or more.

Can I reset OBDII code P27AC in my 2014 GMC Sierra indicating Transmission Control Solenoid Valve 6 Calibration Incorrect on my own?

While you can reset OBDII codes using an OBDII scanner, simply resetting the code will not fix the underlying issue causing code P27AC in your 2014 GMC Sierra. It is important to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

What steps should I take if OBDII code P27AC in my 2014 GMC Sierra related to Transmission Control Solenoid Valve 6 Calibration Incorrect keeps coming back after repairs?

If OBDII code P27AC related to Transmission Control Solenoid Valve 6 Calibration Incorrect keeps coming back after repairs, it is advisable to recheck the repairs that were done, ensure all components are properly installed and functioning, and consider seeking assistance from a professional mechanic for further diagnosis and repair.

Discuss the causes and fixes for P27AC 2014 GMC Sierra OBDII Code

Code P27AC 2014 GMC Sierra comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play