Quick Answer
U07CC means: U07CC indicates a communication failure between control modules, affecting vehicle electronics.
Can I drive with U07CC? Immediate attention is recommended to prevent further electrical issues.
Common Questions
What does U07CC mean and how does it affect my car?
The U07CC code indicates a communication failure between the BCM and other control modules, which can lead to various electronic malfunctions. If not addressed, this could result in safety concerns and more severe electrical issues.
What are the most common causes of U07CC and how much does it cost to fix?
Common causes include a faulty BCM, damaged wiring, and software issues, with repair costs ranging from $100 for wiring repairs to $800 for BCM replacement.
Can I drive my car with U07CC or should I stop immediately?
It is recommended to stop driving and seek repairs as continuing to operate a vehicle with this code can result in further damage to electronic components.
How can I diagnose U07CC myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for trouble codes, view freeze frame data, and monitor live sensor data to help diagnose the issue effectively.
What vehicles are most commonly affected by U07CC?
This code is frequently reported in 2016-2020 Chevrolet and GMC models, including the Silverado, Sierra, and Equinox.
How can I prevent U07CC from happening again?
Regular vehicle maintenance, including inspecting electrical systems and ensuring software updates, can help prevent this code from reoccurring.
What is U07CC?
The diagnostic trouble code (DTC) U07CC indicates a communication issue between the vehicle's control modules, specifically related to the vehicle's body control module (BCM) and its communication network. This code is often seen in various Chevrolet and GMC models from 2016 to 2020, where it signifies that the BCM is either malfunctioning or failing to communicate properly with other modules, such as the engine control module (ECM) or transmission control module (TCM). This lack of communication can lead to a variety of problems, including erratic performance, failure of electrical systems, and even the inability to start the vehicle. In real-world terms, if you're experiencing this code, you may notice that certain electronic features of your vehicle, like the power windows or door locks, might not function properly. Ignoring this issue can lead to further complications down the line, including more extensive electrical issues and higher repair costs. It's crucial for car owners to address this code promptly to ensure the vehicle operates smoothly and to avoid potential safety hazards.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U07CC is present:
- The check engine light remains illuminated, indicating a problem that requires immediate attention.
- You may experience intermittent failures of electrical components like the radio, power windows, or dashboard lights, leading to a frustrating driving experience.
- Fuel economy might drop significantly, sometimes by 10-15%, as the engine struggles to communicate effectively with other systems.
- The vehicle may have starting issues, where it fails to start on the first attempt, requiring multiple tries.
- Strange noises or irregular behavior from the electrical systems, such as flickering lights or unresponsive controls, can also indicate a deeper problem.
Possible Causes
Most common causes of U07CC (ordered by frequency):
- The most common cause of U07CC is a faulty body control module (BCM), which accounts for about 60% of the cases. This module can fail due to age or manufacturing defects.
- Another frequent issue is damaged wiring or poor connections within the wiring harness, particularly in areas prone to wear and tear, accounting for roughly 25% of occurrences.
- Thirdly, software glitches in the vehicle's computer systems can also trigger this code, emphasizing the importance of keeping your vehicle's software updated to prevent issues.
- Less common but serious causes include water intrusion in the BCM, which can lead to complete module failure if not addressed promptly.
- A rare cause may be interference from aftermarket accessories that have been improperly installed, leading to communication disruptions.
U07CC Repair Costs
Cost Breakdown by Repair Type
BCM Replacement
Replacing a faulty body control module with a new OEM or aftermarket part.
- Total: $400 - $800
- Success rate: 85%
Wiring Repair
Repairing damaged wiring or connectors related to the BCM.
- Total: $100 - $300
- Success rate: 90%
Money-Saving Tips for U07CC
- 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 U07CC Diagnosis Process
Follow these systematic steps to accurately diagnose U07CC. 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).
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).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the BCM (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the BCM (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes to check for reoccurrences (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes to check for reoccurrences (10-15 minutes).
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).
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: BCM Replacement on 2018 Chevrolet Silverado
Vehicle: 2018 Chevrolet Silverado, 45,000 miles
Problem: Customer reported intermittent failure of power locks and dashboard lights.
Diagnosis: After running the GeekOBD APP, U07CC was confirmed along with other communication codes.
Solution: Replaced the BCM and repaired a damaged wiring harness.
Cost: $650 (BCM: $500, labor: $150)
Result: All systems returned to normal operation, and no codes reappeared after a road test.
Case Study 2: Wiring Repair on 2019 GMC Terrain
Vehicle: 2019 GMC Terrain, 30,000 miles
Problem: Customer experienced issues with electronic stability control and warning lights.
Diagnosis: Inspection revealed corroded connectors leading to poor communication.
Solution: Repaired the wiring and cleaned all connections.
Cost: $200 (labor: $100, parts: $100)
Result: Vehicle passed diagnostics, and all functions worked correctly post-repair.