P1201 2015 Chevrolet Silverado Code - Transmission Range Redundant Command Message Counter Incorrect
Quick Answer
The P1201 diagnostic trouble code for a 2015 Chevrolet Silverado indicates that the Transmission Range Redundant Command Message Counter is incorrect. Common causes include Faulty transmission control module (TCM), Faulty engine control module (ECM), Wiring or connection issues between TCM and ECM. 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
- P1201 2015 Chevrolet Silverado indicates Transmission Range Redundant Command Message Counter Incorrect.
- Common causes
- Common causes include Faulty transmission control module (TCM), Faulty engine control module (ECM), Wiring or connection issues between TCM and ECM.
- 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 P1201 2015 Chevrolet Silverado Description
The P1201 diagnostic trouble code for a 2015 Chevrolet Silverado indicates that the Transmission Range Redundant Command Message Counter is incorrect. This code typically points to a communication error between the transmission control module (TCM) and the engine control module (ECM). The TCM and ECM exchange messages to ensure that the transmission is in the correct gear and that the engine is operating properly. When the counter is incorrect, it means that the TCM and ECM are not receiving the expected number of messages from each other, which can lead to performance issues.
Common Causes of P1201 2015 Chevrolet Silverado
- Faulty transmission control module (TCM)
- Faulty engine control module (ECM)
- Wiring or connection issues between TCM and ECM
- Software malfunction in TCM or ECM
- Electrical interference or signal disruption
Symptoms of P1201 2015 Chevrolet Silverado
- Rough or delayed gear shifts
- Vehicle stalling or hesitating during acceleration
- Check engine light illuminated
- Decreased fuel efficiency
- Poor overall drivability
How to Fix P1201 2015 Chevrolet Silverado
- Perform a thorough diagnostic scan to retrieve the specific error codes and pinpoint the issue.
- Inspect the wiring and connections between the TCM and ECM for any damage or corrosion.
- Test the TCM and ECM for proper functionality and replace if necessary.
- Update software in TCM and ECM to the latest versions to address any potential glitches.
- Clear the error codes and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1201 2015 Chevrolet Silverado
The typical repair costs for addressing the P1201 code on a 2015 Chevrolet Silverado can vary depending on the exact cause of the issue. Parts such as a new TCM or ECM can range from $300 to $800, while labor costs can range from $100 to $300. Overall, the total repair cost may fall between $400 and $1100. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check local rates for a more accurate estimate.
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