P155D 2016 Chevrolet Silverado Code - Hill Descent Control Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection. 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
- P155D 2016 Chevrolet Silverado indicates Hill Descent Control Message Counter Incorrect.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection.
- 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 P155D 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P155D 2016 Chevrolet Silverado?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC P155D 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 P155D 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.
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Frequently Asked Questions about P155D 2016 Chevrolet Silverado Code
1. What does OBDII code P155D mean for a 2016 Chevrolet Silverado?
Code P155D indicates that the Hill Descent Control (HDC) system has detected an incorrect counter message, which suggests an issue in the communication between control modules or with the HDC system.
2. What are the symptoms of code P155D in a 2016 Chevrolet Silverado?
Common symptoms include the Hill Descent Control system not engaging, an illuminated check engine light, or a warning message about the HDC system on the dashboard.
3. What causes code P155D in a 2016 Chevrolet Silverado?
The code can be caused by faulty communication between the Electronic Brake Control Module (EBCM) and other modules, software issues, damaged wiring, or a malfunctioning sensor related to the Hill Descent Control system.
4. Is it safe to drive a 2016 Chevrolet Silverado with code P155D?
While the vehicle may remain drivable, the Hill Descent Control system may be inoperative, which could pose a safety risk when driving on steep declines.
5. How is code P155D diagnosed in a 2016 Chevrolet Silverado?
A technician will use a scan tool to check for related diagnostic trouble codes, inspect wiring and connectors, and test communication between the modules involved in the HDC system.
6. Can a software update fix code P155D on a 2016 Chevrolet Silverado?
Yes, in some cases, the issue may be resolved with a software update to the control module if the problem is related to outdated programming.
7. What parts might need to be replaced to fix code P155D?
Potential repairs could involve replacing the Electronic Brake Control Module (EBCM), repairing or replacing damaged wiring, or replacing sensors associated with the HDC system.
8. How much does it cost to fix code P155D on a 2016 Chevrolet Silverado?
The repair cost can vary widely depending on the root cause. Software updates or minor wiring repairs may cost under $200, while module replacements could exceed $1,000.
9. Can I reset code P155D without fixing the issue?
Clearing the code without addressing the underlying problem may temporarily turn off the warning, but the issue is likely to return and could impact vehicle safety.
10. What preventative maintenance can help avoid code P155D?
Regularly inspect wiring and connectors for damage, ensure control module software is up-to-date, and have your braking and HDC systems checked during routine maintenance.
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