Quick Answer
C0975 means: C0975 indicates a malfunction in the Steering Control Module, affecting steering assist.
Can I drive with C0975? Immediate attention is recommended to ensure safe vehicle operation.
Common Questions
What does C0975 mean and how does it affect my car?
C0975 indicates a malfunction in the Steering Control Module, which can lead to heavy or unresponsive steering. This affects your ability to control the vehicle safely, especially at higher speeds or in tight situations.
What are the most common causes of C0975 and how much does it cost to fix?
Common causes include a faulty Steering Control Module, damaged wiring, and battery issues. Repair costs can range from $100 for wiring repairs to $800 for module replacement, depending on the severity of the issue.
Can I drive my car with C0975 or should I stop immediately?
It's advised to stop driving if you encounter C0975, as impaired steering can pose a serious safety risk. Have your vehicle inspected as soon as possible to avoid accidents.
How can I diagnose C0975 myself using GeekOBD APP?
Start by downloading the GeekOBD APP and connecting it to your vehicle's OBD2 port. Run a diagnostic scan to retrieve error codes and freeze frame data, which will help you pinpoint the issue.
What vehicles are most commonly affected by C0975?
C0975 frequently affects 2015-2019 Chevrolet Silverado models, as well as certain GMC trucks and SUVs from the same year range. Always check for TSBs or recalls that may apply.
How can I prevent C0975 from happening again?
Regular maintenance, including battery checks and wiring inspections, can help prevent C0975. Using quality parts during repairs can also reduce the risk of recurrence.
What is C0975?
The Diagnostic Trouble Code (DTC) C0975 indicates a malfunction in the Steering Control Module (SCM). This code is commonly associated with vehicles like the 2015-2019 Chevrolet Silverado but can also appear in various GM models. When this code is triggered, it typically means there is a problem with the communication between the SCM and the vehicle's onboard computer system. This issue can manifest as an inability to control steering assist, resulting in heavy steering or, in some cases, a complete loss of power steering functionality. In practical terms, this can lead to a significant safety risk, as the driver may struggle to maneuver the vehicle effectively. Additionally, you may notice the check engine light illuminating on your dashboard. It's crucial to address this issue promptly to ensure safe driving conditions and maintain the integrity of your vehicle's steering system. Neglecting a C0975 code could lead to more severe damage and costly repairs down the line, making it essential to diagnose and rectify the problem as soon as possible.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0975 is present:
- Check engine light stays on constantly, indicating a persistent issue with the steering system.
- Heavy or unresponsive steering, making it difficult to turn the wheel or maneuver the vehicle.
- Inconsistent steering assist, where the steering feels light at times and heavy at others, leading to unpredictable handling.
- Unusual noises from the steering column, which may indicate underlying mechanical or electrical failures.
- Dashboard warning lights related to vehicle stability or traction control, highlighting potential electronic interference.
Possible Causes
Most common causes of C0975 (ordered by frequency):
- The most common cause of C0975 is a fault in the Steering Control Module itself, accounting for approximately 40% of cases. This may involve internal circuit failures or software glitches.
- Another frequent cause is damaged wiring or connectors associated with the SCM, which can lead to communication errors with the vehicle's computer system.
- Poor battery health or voltage fluctuations can also trigger C0975, as the SCM requires stable power to function correctly. Regular battery checks can prevent this issue.
- Less common but serious causes include issues with the vehicle's main computer or control module, which can affect overall vehicle performance.
- A rare cause might be a malfunction in the steering rack or column, often accompanied by other mechanical issues that require immediate inspection.
C0975 Repair Costs
Cost Breakdown by Repair Type
Steering Control Module Replacement
Replacing the faulty Steering Control Module with a new OEM unit.
- Total: $400 - $800
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring or connectors in the steering system.
- Total: $100 - $300
- Success rate: 85%
Money-Saving Tips for C0975
- 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 C0975 Diagnosis Process
Follow these systematic steps to accurately diagnose C0975. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the steering system (5-10 minutes)
Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or corrosion around the steering system (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all codes and freeze frame data to gather context on the fault (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all codes and freeze frame data to gather context on the fault (10-15 minutes).
Step 3: Step 3: Test the steering control module and associated components with a multimeter or specific diagnostic tools to check for proper voltage and continuity (20-30 minutes)
Step 3: Test the steering control module and associated components with a multimeter or specific diagnostic tools to check for proper voltage and continuity (20-30 minutes).
Step 4: Step 4: After necessary repairs, conduct a system function test to verify that the steering operates correctly and clear any codes (10-15 minutes)
Step 4: After necessary repairs, conduct a system function test to verify that the steering operates correctly and clear any codes (10-15 minutes).
Step 5: Step 5: Finish with a road test to ensure the vehicle responds appropriately under various driving conditions, confirming that the issue has been resolved (15-20 minutes)
Step 5: Finish with a road test to ensure the vehicle responds appropriately under various driving conditions, confirming that the issue has been resolved (15-20 minutes).
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 Control Module Replacement in a 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado 1500, 75,000 miles
Problem: Customer reported heavy steering and check engine light illuminated.
Diagnosis: Diagnostic scan revealed code C0975. Visual inspection showed damaged wiring to the SCM.
Solution: Replaced the wiring harness and the SCM with a new OEM unit.
Cost: $650 (parts $400, labor $250)
Result: Customer reported normal steering function and no further issues after the repair.
Case Study 2: Wiring Repair in a 2016 GMC Sierra
Vehicle: 2016 GMC Sierra 1500, 60,000 miles
Problem: Driver experienced intermittent steering assist and warning lights.
Diagnosis: C0975 was triggered due to frayed wires in the steering column.
Solution: Repaired the damaged wiring and cleared the DTC.
Cost: $150 (parts $50, labor $100)
Result: The issue was resolved, and the vehicle operated normally afterwards.