AutoCodes – Chevrolet – P27A7 2016 Chevrolet Silverado

P27A7 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 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: P27A7 2016 Chevrolet Silverado indicates Transmission Control Solenoid Valve 1 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.

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Code Popularity 207

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 Sep 22, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P27A7 2016 Chevrolet Silverado 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 P27A7 2016 Chevrolet Silverado - Transmission Control Solenoid Valve 1 Calibration Incorrect - AutoCodes.com — P27A7 2016 Chevrolet Silverado Code - Transmission Control Solenoid Valve 1 Calibration Incorrect

What does this mean?

What are the Possible Causes of the DTC P27A7 2016 Chevrolet Silverado?

Solenoid Valve Characterization Reprogramming

How to Fix the DTC P27A7 2016 Chevrolet Silverado?

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 P27A7 2016 Chevrolet Silverado 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 P27A7 2016 Chevrolet Silverado code?

Need more information on how to fix the P27A7 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P27A7 2016 Chevrolet Silverado 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 P27A7 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P27A7 in a 2016 Chevrolet Silverado?

The common symptoms include rough shifting, transmission slipping, reduced fuel efficiency, and the Check Engine Light illuminating.

2. What could cause the OBDII code P27A7 to appear in a 2016 Chevrolet Silverado?

The code P27A7 typically indicates that the Transmission Control Solenoid Valve 1 calibration is incorrect, which may be caused by electrical issues, a faulty solenoid valve, or a software glitch.

3. How serious is OBDII code P27A7 in a 2016 Chevrolet Silverado?

While the vehicle may still be operable with this code, it is recommended to address it promptly to prevent potential damage to the transmission and ensure optimal vehicle performance.

4. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P27A7?

It is advisable to limit driving your Silverado with this code present to prevent further transmission issues. Seeking professional diagnosis and repair is recommended.

5. How can I diagnose OBDII code P27A7 in my 2016 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting the solenoid valve, and conducting a calibration check.

6. Is it possible to repair OBDII code P27A7 in a 2016 Chevrolet Silverado without professional help?

While some DIY enthusiasts may attempt to address this code, it is recommended to consult a qualified mechanic for accurate diagnosis and proper repair to avoid complications.

7. How much does it cost to fix OBDII code P27A7 in a 2016 Chevrolet Silverado?

The repair cost can vary depending on the exact cause of the code, parts needed, and labor rates. It is advisable to obtain multiple quotes from reputable repair shops.

8. Can resetting the OBDII code P27A7 in a 2016 Chevrolet Silverado solve the issue?

Resetting the code may temporarily clear the Check Engine Light, but it will not fix the underlying problem causing the code. It is crucial to address the root cause of the issue.

9. What steps can I take to prevent OBDII code P27A7 from reoccurring in my 2016 Chevrolet Silverado?

Regular maintenance, such as checking and replacing transmission fluid as needed, can help prevent issues that may trigger this code. Following the manufacturer's service recommendations is also important.

10. Is it safe to drive long distances with OBDII code P27A7 in a 2016 Chevrolet Silverado?

It is not recommended to drive long distances with this code present, as unresolved transmission issues can worsen over time and potentially lead to more significant problems.