C015C - Understanding C015C Code in 2015-2019 Chevrolet Silverado and GMC Sierra

Quick Answer

C015C means: C015C indicates a malfunction in the steering angle sensor or stability control system.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with C015C? You should address this code immediately to ensure vehicle safety.

Common Questions

What does C015C mean and how does it affect my car?

The C015C code indicates a problem with the steering angle sensor, which can severely impact your vehicle's stability and traction control systems. If ignored, it may lead to unsafe driving conditions and more significant repairs down the road.

What are the most common causes of C015C and how much does it cost to fix?

The primary cause of C015C is a faulty steering angle sensor, which can cost between $150 and $300 to replace. Other causes include damaged wiring or ABS module issues, which could range from $50 for simple repairs to $200 for reprogramming.

Can I drive my car with C015C or should I stop immediately?

While you might still be able to drive your car with a C015C code, it is not advisable. The code indicates potential issues with your vehicle's stability systems, which can compromise safety. It’s best to have it inspected and repaired as soon as possible.

How can I diagnose C015C myself using GeekOBD APP?

You can use the GeekOBD APP to scan your vehicle for trouble codes, including C015C. The app will provide freeze frame data and help you understand the context of the fault. Look for any related codes that might offer more insight into the issue.

What vehicles are most commonly affected by C015C?

The C015C code is commonly found in 2015-2019 Chevrolet Silverado and GMC Sierra models, as well as other GM vehicles with similar stability control systems. Always check for any recalls or technical service bulletins related to this issue.

How can I prevent C015C from happening again?

Regular maintenance, including routine inspections of the steering and suspension systems, can help prevent issues like C015C. Ensure that you also keep the vehicle's software updated and address any warning lights promptly.

What is C015C?

The diagnostic trouble code (DTC) C015C indicates a problem with the steering angle sensor or the stability control system in certain vehicles, particularly affecting models like the 2015-2019 Chevrolet Silverado and GMC Sierra. This code typically signifies that the steering angle sensor is not providing a valid signal to the vehicle's control module. The steering angle sensor is crucial for the vehicle's stability and traction control systems, as it helps determine the direction the driver intends to steer. When this code appears, you may experience issues such as the 'Service Stabilitrak' warning message on your dashboard, potential traction control malfunctions, and an overall decrease in handling stability during driving. Ignoring this code can lead to more severe problems down the line, potentially affecting safety systems and leading to costly repairs. It's essential to address this issue promptly to ensure safe vehicle operation and maintain optimal performance.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C015C is present:

  • The 'Service Stabilitrak' warning light may illuminate on your dashboard, indicating a need for system attention.
  • You may notice erratic handling or steering response, as the vehicle might not track properly during turns.
  • Check engine light may stay on constantly, often paired with other warning indicators related to traction control.
  • The vehicle may experience reduced traction control functionality, particularly in slippery conditions, making driving less safe.
  • In some cases, you might feel vibrations or hear unusual noises from the steering column while driving.

Possible Causes

Most common causes of C015C (ordered by frequency):

  1. The most common cause for C015C is a faulty steering angle sensor, which occurs in about 60% of cases. This sensor can wear out or become misaligned over time.
  2. Another potential cause is damaged wiring or connectors associated with the steering angle sensor, which can disrupt the signal sent to the control module.
  3. In some instances, a calibration issue may arise, where the sensor's data does not match the expected range, often due to improper repairs or replacements.
  4. Less common causes include faults in the ABS module, which could misinterpret the sensor's input, leading to stability control issues.
  5. A rare but possible cause is software glitches in the vehicle's onboard computer, which may require a software update or reprogramming to resolve.

C015C Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor with a new OEM part.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Repair

Repairing any damaged wiring or connectors related to the steering angle sensor.

  • Total: $50 - $150
  • Success rate: 85%
ABS Module Reprogramming

Updating or reprogramming the ABS module if software issues are detected.

  • Total: $100 - $200
  • Success rate: 75%
Money-Saving Tips for C015C
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C015C Diagnosis Process

Follow these systematic steps to accurately diagnose C015C. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the steering angle sensor (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion around the steering angle sensor (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, which can help identify if there are other issues (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context, which can help identify if there are other issues (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the resistance and output of the steering angle sensor to determine if it's functioning correctly (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the resistance and output of the steering angle sensor to determine if it's functioning correctly (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After repairs, verify proper operation and clear codes using the GeekOBD APP to ensure the issue has been resolved (10-15 minutes)

Step 4: System function test - After repairs, verify proper operation and clear codes using the GeekOBD APP to ensure the issue has been resolved (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the repair was successful and that no warning lights reappear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the repair was successful and that no warning lights reappear (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Steering Angle Sensor Replacement on 2017 GMC Sierra

Vehicle: 2017 GMC Sierra 1500, 45,000 miles

Problem: Customer reported a Service Stabilitrak warning light and poor handling during turns.

Diagnosis: After running diagnostics with the GeekOBD APP, the C015C code was confirmed along with a visual inspection showing a misaligned steering angle sensor.

Solution: Replaced the steering angle sensor and recalibrated the system using the GeekOBD APP.

Cost: $250 (including parts and labor)

Result: The warning light was cleared, and the vehicle's handling improved significantly.

Case Study 2: Wiring Issues in 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado 1500, 60,000 miles

Problem: Customer experienced steering instability and noted the check engine light was on.

Diagnosis: Diagnostic testing revealed a C015C code due to damaged wiring harness connected to the steering angle sensor.

Solution: Repaired the wiring and replaced a connector that was corroded.

Cost: $120 (for parts and labor)

Result: The vehicle functioned normally post-repair, with no further warning lights.

Diagnose C015C

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C015C
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes