Answers
Dec 16, 2023 - 11:11 AM
Dec 20, 2023 - 11:11 PM
Possible causes for multiple codes on a 2010 Chevy Silverado 2500:
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Common Ground Issue:
- Check and ensure there's a good ground connection, especially at common grounding points for these modules.
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Battery Voltage:
- Ensure stable battery voltage. Unstable voltage can lead to communication errors. Check battery condition and connections.
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Wiring Integrity:
- Inspect wiring harnesses for damage, corrosion, or loose connections, especially in areas related to the ECM, TCM, and brake control module.
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ECM/TCM Communication:
- The U0101 codes indicate a loss of communication between the ECM and TCM. Check for issues in the communication lines or problems with the modules themselves.
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Transmission Control Module (TCM) Power Input:
- Address the P0880 code by checking the power input signal to the TCM. Ensure proper power supply and wiring.
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Tire Pressure Sensor System:
- Investigate the C0755 and C0765 codes related to the tire pressure sensor system. Check for faults in the tire pressure sensor circuits.
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Electronic Brake Control Module (EBCM):
- The U0101-7F and C0561-71 codes relate to the EBCM. Inspect the wiring and connections related to the brake control module.
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Alternator Voltage:
- While a charging voltage of 15-15.5V is generally acceptable, consider monitoring it for any fluctuations during operation.
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Professional Diagnostics:
- Due to the complexity of multiple codes, consider seeking professional diagnostics. A scan tool with live data capabilities can help identify real-time issues.
Addressing common ground points, checking wiring integrity, and ensuring stable power supply are critical steps. If issues persist, professional diagnosis is recommended to pinpoint and resolve the root causes.
Dec 25, 2023 - 01:51 PM
Sounds like your Silverado is having a bit of a communication breakdown. Multiple codes popping up, especially after being cleared, usually point to a problem with the electrical system, and bad ground is a prime suspect. It's often a good idea to start with some basics. While a bad ground could potentially cause communication issues, it's not the only possible culprit.
Firstly, make sure all the connections to the Transmission Control Module (TCM) are solid and secure. Loose or corroded connections can mess with the signals going in and out.
Also, check the power supply to the TCM. The P0880 code suggests an issue with the power input signal. A faulty power supply could lead to communication problems.
Since you're dealing with multiple communication loss codes, it might be worth looking into the overall health of the vehicle's network. A short or open circuit in the Controller Area Network (CAN) could be throwing things off.
Lastly, the Electronic Brake Control Module (EBCM) is throwing some codes too. Again, make sure the connections are good, and if possible, check for any recent repairs or modifications that might have impacted the wiring.
Remember, troubleshooting can be a process of elimination, and sometimes one fix might clear up several issues. So, start with the basics, check the obvious, and work your way through the possibilities.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.




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