P27AD 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 7 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
- P27AD 2014 Chevrolet Silverado indicates Transmission Control Solenoid Valve 7 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.
Code P27AD 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P27AD 2014 Chevrolet Silverado?
- Solenoid Valve Characterization Reprogramming
How to Fix the DTC P27AD 2014 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 P27AD 2014 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 P27AD 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P27AD 2014 Chevrolet Silverado Code
1. What does the OBDII code P27AD mean on a 2014 Chevrolet Silverado?
The P27AD code indicates that the Transmission Control Module (TCM) has detected an issue with the calibration of solenoid valve 7 in the transmission.
2. What are the symptoms of the P27AD code in a 2014 Chevrolet Silverado?
Common symptoms include erratic shifting, transmission slipping, failure to shift into specific gears, or the transmission going into limp mode.
3. What causes the P27AD code to appear?
Causes can include a faulty solenoid valve, incorrect solenoid calibration, wiring or connector issues, or a malfunctioning Transmission Control Module (TCM).
4. Can a dirty transmission fluid cause the P27AD code?
Yes, contaminated or degraded transmission fluid can affect solenoid performance and may trigger this code.
5. How is the P27AD code diagnosed on a 2014 Chevrolet Silverado?
A technician will use a scan tool to verify the code, inspect the transmission wiring and connectors, check solenoid operation, and possibly perform a fluid analysis or reprogram the TCM.
6. Can I drive my 2014 Chevrolet Silverado with the P27AD code?
Driving with this code is not recommended, as it can lead to further transmission damage or unsafe driving conditions.
7. How much does it cost to fix the P27AD code?
Repair costs vary but could range from $150 to $1,200 depending on whether the issue is with the solenoid, wiring, fluid, or TCM.
8. Can resetting the TCM fix the P27AD code?
A TCM reset may clear the code temporarily, but the underlying issue must be addressed to prevent the code from returning.
9. What tools are needed to repair the P27AD code?
A scan tool, multimeter, and possibly specialized transmission diagnostic equipment are required to diagnose and repair this issue.
10. Is the P27AD code a common problem for the 2014 Chevrolet Silverado?
It’s not extremely common but can occur in vehicles with higher mileage or those that haven’t had regular transmission maintenance.
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