C037C - Understanding DTC C037C: Common Issues in 2015-2018 Chevrolet Silverado and GMC Sierra

Quick Answer

C037C means: DTC C037C signifies a fault in the steering angle sensor, affecting vehicle stability.

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

Can I drive with C037C? Immediate attention is recommended to prevent safety issues.

Common Questions

What does C037C mean and how does it affect my car?

C037C indicates a fault in the steering angle sensor, which is crucial for stability control. If it malfunctions, your vehicle may handle unpredictably, especially in emergencies.

What are the most common causes of C037C and how much does it cost to fix?

Common causes include a failed steering angle sensor or damaged wiring. Repair costs typically range from $100 to $300, depending on the issue.

Can I drive my car with C037C or should I stop immediately?

It's advisable to limit driving if C037C is present, as it can affect vehicle stability and safety. Seek repairs promptly to avoid accidents.

How can I diagnose C037C myself using GeekOBD APP?

Using the GeekOBD APP, scan your vehicle for codes, check freeze frame data, and monitor live sensor data to identify issues related to the steering angle sensor.

What vehicles are most commonly affected by C037C?

This code is frequently seen in 2015-2018 Chevrolet Silverado and GMC Sierra models, as well as other GM trucks from that period.

How can I prevent C037C from happening again?

Regular maintenance, including checking wiring and recalibrating the steering system after tire rotations, can help prevent this issue.

What is C037C?

DTC C037C indicates a problem with the steering angle sensor or its circuit in vehicles like the 2015-2018 Chevrolet Silverado and GMC Sierra. Specifically, this code means that the steering angle sensor has detected a fault in the system responsible for tracking the steering wheel's position. Proper functioning of the steering angle sensor is crucial for the vehicle’s Electronic Stability Control (ESC) and Traction Control System (TCS). If this sensor is faulty, it can lead to unpredictable vehicle handling, especially in slippery conditions. Drivers might notice that the vehicle feels unstable, especially when turning corners or during sudden maneuvers. In some cases, the Check Engine light or Stability Control light may illuminate on the dashboard. If left unaddressed, a malfunctioning steering angle sensor can lead to more severe issues, compromising vehicle safety and performance. Therefore, it's essential to diagnose and repair the code as soon as possible to ensure proper vehicle handling and safety.

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

Symptoms

Common symptoms when C037C is present:

  • The Check Engine light stays on constantly, indicating an issue with the steering system.
  • The vehicle feels unstable or wanders during acceleration, leading to a lack of control.
  • Fuel economy may decrease by 10-15% due to the traction control system malfunctioning.
  • Inconsistent steering response can be felt, particularly during sharp turns or sudden stops.
  • The Stability Control light may illuminate, signaling the driver that the system is inactive.

Possible Causes

Most common causes of C037C (ordered by frequency):

  1. The most common cause is a failed steering angle sensor, with a likelihood of about 70%. This can happen due to wear and tear or physical damage.
  2. A damaged wiring harness or poor electrical connections account for approximately 20% of cases, leading to intermittent communication failures.
  3. Improper calibration after a tire rotation or alignment can also trigger this code, emphasizing the need for regular service checks.
  4. Less common but serious causes include malfunctioning Electronic Control Unit (ECU) software, which may require a software update.
  5. Rarely, physical damage to the steering column can lead to sensor misalignment, necessitating a more complex repair.

C037C Repair Costs

Cost Breakdown by Repair Type

Steering Angle Sensor Replacement

Replacing the faulty steering angle sensor to restore functionality.

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

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

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for C037C
  • 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 C037C Diagnosis Process

Follow these systematic steps to accurately diagnose C037C. 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 (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (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 (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (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 multimeter or specific diagnostic tools to test the steering angle sensor and related components (20-30 minutes)

Step 3: Component testing - Use multimeter or specific diagnostic tools to test the steering angle sensor and related components (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 - Verify proper operation after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes (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 repair success (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado, 50,000 miles

Problem: Customer reported Check Engine light and unstable steering.

Diagnosis: After running diagnostics, C037C was confirmed. Visual inspection revealed a failed steering angle sensor.

Solution: Replaced the steering angle sensor and recalibrated the system.

Cost: $250 (parts: $150, labor: $100)

Result: Post-repair road test confirmed stable steering and no further codes.

Case Study 2: Wiring Repair on 2017 GMC Sierra

Vehicle: 2017 GMC Sierra, 40,000 miles

Problem: Customer experienced intermittent stability control warning messages.

Diagnosis: Diagnostics indicated C037C. Inspection revealed damaged wiring in the sensor circuit.

Solution: Repaired the wiring and ensured proper connections.

Cost: $150 (parts: $50, labor: $100)

Result: Stability control system functioned normally after repair.

Diagnose C037C

Use GeekOBD APP for professional diagnosis!

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

Code: C037C
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes