C0755 - Traction Control System Fault in Popular Vehicles Like Chevy and GMC

Quick Answer

C0755 means: C0755 indicates a fault in the traction control system, commonly related to wheel speed sensors or the traction control module.

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

Can I drive with C0755? Immediate attention is advised to ensure safe vehicle operation.

Common Questions

What does C0755 mean and how does it affect my car?

C0755 indicates a fault in the traction control system, which is essential for maintaining vehicle stability in slippery conditions. Ignoring this code can lead to reduced control over the vehicle, especially during adverse weather.

What are the most common causes of C0755 and how much does it cost to fix?

Common causes of C0755 include faulty wheel speed sensors (costing around $150 to $300), malfunctioning traction control modules (ranging from $300 to $600), and wiring problems (typically $100 to $200).

Can I drive my car with C0755 or should I stop immediately?

While you may still drive the vehicle, it is advisable to address the C0755 code promptly to ensure your safety. Driving without traction control can increase the risk of losing control, particularly in slippery conditions.

How can I diagnose C0755 myself using GeekOBD APP?

You can use the GeekOBD APP to retrieve diagnostic codes and freeze frame data. Look for any related codes that may provide more context and begin with visual inspections of the wiring and sensors.

What vehicles are most commonly affected by C0755?

C0755 is frequently reported in 2015-2018 Chevy Silverado, 2016-2019 GMC Sierra, and other GM models. These vehicles often experience similar traction control system issues.

How can I prevent C0755 from happening again?

Routine vehicle maintenance, including regular inspections of wheel speed sensors and wiring, can help prevent C0755. Keeping the software updated through dealership services can also reduce the chance of electronic failures.

What is C0755?

The diagnostic trouble code C0755 indicates a malfunction within the traction control system of your vehicle. This code is often seen in various General Motors (GM) vehicles, particularly models from Chevrolet and GMC, such as the 2015-2018 Chevy Silverado and 2016-2019 GMC Sierra. The traction control system plays a vital role in maintaining vehicle stability, especially during slippery conditions. When the system detects a fault, it triggers the warning light on your dashboard and can affect overall vehicle performance. The C0755 code often points to issues with the wheel speed sensors or the traction control module itself. In some cases, it may also relate to wiring problems or poor connections, resulting in intermittent or complete failure of the traction control function. While your vehicle may still drive, the absence of traction control increases the risk of skidding or losing control, particularly in adverse weather. Therefore, understanding this code and addressing it promptly is essential for your safety and the optimal performance of your vehicle.

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

Symptoms

Common symptoms when C0755 is present:

  • The traction control warning light illuminates on the dashboard, indicating a potential issue with the system.
  • You may experience loss of traction during acceleration, particularly on wet or icy roads, leading to a feeling of instability.
  • The vehicle might occasionally skid or slide unexpectedly, especially during turns, which can be alarming for the driver.
  • In some instances, the engine may hesitate or surge during acceleration due to the system’s attempts to regain traction.
  • Fuel efficiency could decrease by approximately 10-15% if the traction control system is not functioning correctly.

Possible Causes

Most common causes of C0755 (ordered by frequency):

  1. The most common cause is a faulty wheel speed sensor, which is responsible for monitoring the speed of each wheel. This issue occurs in about 60% of cases and can often be identified through diagnostic testing.
  2. Another frequent cause is a malfunctioning traction control module. This component processes data from the wheel speed sensors and controls the braking on individual wheels. If it fails, it may show up as C0755.
  3. Wiring issues, such as damaged or corroded wires connecting the sensors and the module, can lead to a loss of signal, accounting for about 15% of cases. Regular inspections can help prevent these issues.
  4. Less common but significant causes include problems with the ABS (Anti-lock Braking System) module, which may affect traction control performance.
  5. A rare cause could be software glitches in the vehicle’s control module, which might require a software update or reprogramming from a dealership.

C0755 Repair Costs

Cost Breakdown by Repair Type

Wheel Speed Sensor Replacement

Replacing a faulty wheel speed sensor, a common issue causing C0755.

  • Total: $150 - $300
  • Success rate: 90%
Traction Control Module Replacement

Replacing the traction control module if it is found to be defective.

  • Total: $300 - $600
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring or connectors related to the traction control system.

  • Total: $100 - $200
  • Success rate: 80%
Money-Saving Tips for C0755
  • 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 C0755 Diagnosis Process

Follow these systematic steps to accurately diagnose C0755. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for signs of damage to wiring and connectors related to the traction control system

Step 1: Initial visual inspection - Check for signs of damage to wiring and connectors related to the traction control system. Look for corrosion or loose connections (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 - Use the app to retrieve all diagnostic codes and freeze frame data, providing context for the C0755 code (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use the app to retrieve all diagnostic codes and freeze frame data, providing context for the C0755 code (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 - Test the wheel speed sensors and the traction control module using a multimeter to ensure they are functioning correctly (20-30 minutes)

Step 3: Component testing - Test the wheel speed sensors and the traction control module using a multimeter to ensure they are 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 any repairs, verify the operation of the traction control system and clear the codes with the GeekOBD APP (10-15 minutes)

Step 4: System function test - After any repairs, verify the operation of the traction control system and clear the codes with the GeekOBD APP (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 traction control system is functioning properly and that the C0755 code does not return (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the traction control system is functioning properly and that the C0755 code does not return (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: Chevy Silverado Traction Control Issue

Vehicle: 2016 Chevy Silverado 1500 - 75,000 miles

Problem: Customer reported traction control warning light and instability during acceleration.

Diagnosis: Diagnostic scan revealed code C0755. Visual inspection showed a damaged wheel speed sensor.

Solution: Replaced the faulty wheel speed sensor and cleared the codes.

Cost: $250 (sensor cost: $150, labor: $100)

Result: Customer reported improved stability and no reoccurrence of the warning light.

Case Study 2: GMC Sierra Traction Control Malfunction

Vehicle: 2017 GMC Sierra 1500 - 60,000 miles

Problem: Driver experienced loss of traction and warning light activation.

Diagnosis: C0755 was confirmed. Further testing indicated a malfunctioning traction control module.

Solution: Replaced the traction control module and reprogrammed the vehicle's computer.

Cost: $500 (module cost: $400, labor: $100)

Result: After repairs, the vehicle's traction control system functioned normally.

Diagnose C0755

Use GeekOBD APP for professional diagnosis!

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Code Information

Code: C0755
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes