U0102 Chevrolet Code - Lost Communication With Transfer Case Control Module
Quick Answer
Modules connected to the high-speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U0102 Chevrolet indicates Lost Communication With Transfer Case Control Module .
- Common causes
- Common causes include Faulty Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case Control Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U0102 Chevrolet Description
The serial data circuit is how the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the ignition switch is in RUN, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating correctly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message, it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices, in turn, set a DTC associated with the loss of the state of health of the non-communicating device. The DTC is unique to the device which is not communicating, and one or more devices may set the same code. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored code.
What are the Possible Causes of the DTC U0102 Chevrolet?
- Faulty Transfer Case Control Module
- Transfer Case Control Module harness is open or shorted
- Transfer Case Control Module circuit poor electrical connection
How to Fix the DTC U0102 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
2007-2010 Chevrolet Avalanche
2007-2010 Chevrolet Corvette
2007-2010 Chevrolet Silverado
2007-2010 Chevrolet Suburban
2007-2010 Chevrolet Tahoe
2008-2010 Chevrolet Silverado Hybrid
2008-2010 Chevrolet Tahoe Hybrid
Chevrolet Factory Service Bulletin OBDII Code U0102
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U0102 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the U0102 Chevrolet code?
Need more information on how to fix the U0102 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the U0102 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about U0102 Chevrolet Code
1. What are common symptoms of OBDII code U0102 in a Chevrolet related to the transfer case control module?
- Common symptoms include an illuminated check engine light, difficulty shifting gears, and loss of functionality in the transfer case system.
2. What are some possible causes of the U0102 code indicating lost communication with the transfer case control module in a Chevrolet?
- Possible causes include a faulty transfer case control module, damaged wiring or connectors, a blown fuse, or issues with the CAN bus communication system.
3. How can I diagnose the U0102 code in a Chevrolet related to the transfer case control module?
- Diagnose the code by checking for other related trouble codes, inspecting wiring and connectors for damage, testing the transfer case control module, and verifying proper CAN bus communication.
4. What steps can I take to repair the U0102 code indicating lost communication with the transfer case control module in a Chevrolet?
- Repair options may include replacing the transfer case control module, repairing damaged wiring or connectors, checking and replacing fuses, and ensuring proper communication on the CAN bus network.
5. Is it safe to continue driving my Chevrolet with the U0102 code related to the transfer case control module issue?
- It is not recommended to drive the vehicle with the U0102 code present, as it can lead to further damage or loss of control over the transfer case system.
6. Can a DIY enthusiast fix the U0102 code in a Chevrolet by themselves?
- While some basic troubleshooting and repairs can be done by a DIY enthusiast, diagnosing and repairing complex issues related to the transfer case control module may require professional expertise.
7. Are there any recalls or technical service bulletins related to the U0102 code in Chevrolet vehicles?
- It's recommended to check with Chevrolet dealerships or online resources for any recalls or technical service bulletins related to the U0102 code and the transfer case control module.
8. How can I prevent the U0102 code from occurring in my Chevrolet's transfer case control module?
- To prevent the U0102 code, maintain regular vehicle inspections, address any warning signs promptly, and ensure proper maintenance of the transfer case control module and related components.
9. Can a failing battery or alternator cause the U0102 code to appear in a Chevrolet?
- Yes, a failing battery or alternator can disrupt the electrical system, leading to communication issues and triggering the U0102 code related to the transfer case control module.
10. Is it necessary to reset the OBDII system after repairing the U0102 code in a Chevrolet?
- It is recommended to reset the OBDII system after repairing the U0102 code to clear any stored codes and ensure proper functioning of the vehicle's diagnostic system.
1. What are the common symptoms of OBDII code U0102 in a Chevrolet related to the Transfer Case Control Module communication issue?
- Common symptoms include the inability to shift gears properly, dashboard warning lights related to the transfer case, and erratic behavior from the transfer case.
2. What are some possible causes of the U0102 code indicating a lost communication with the Transfer Case Control Module in a Chevrolet?
- Potential causes include damaged wiring or connectors, a faulty transfer case control module, software issues, or a malfunctioning powertrain control module.
3. How can I diagnose the U0102 code in a Chevrolet indicating a communication problem with the Transfer Case Control Module?
- Diagnosing the issue involves using a scan tool to retrieve the code, checking for any related codes, inspecting wiring and connectors for damage, and testing the transfer case control module and related components.
4. Can a weak or dead battery cause the U0102 code in a Chevrolet indicating a lost communication with the Transfer Case Control Module?
- Yes, a weak or dead battery can lead to communication errors between modules in the vehicle, including the transfer case control module, triggering the U0102 code.
5. What are some repair tips for resolving the U0102 code related to the Transfer Case Control Module in a Chevrolet?
- Repair tips include checking and repairing any damaged wiring, ensuring proper connections, resetting the control modules, updating software if necessary, and replacing any faulty components.
6. Is it safe to continue driving a Chevrolet with the U0102 code indicating a lost communication with the Transfer Case Control Module?
- It is not recommended to drive the vehicle with the U0102 code present, as it may lead to unpredictable behavior of the transfer case, potentially causing safety hazards or further damage to the vehicle.
7. How much does it typically cost to repair the U0102 code related to the Transfer Case Control Module in a Chevrolet?
- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred dollars for simple fixes like wiring repairs to over a thousand dollars for module replacements.
8. Can I reset the U0102 code myself after repairing the issue with the Transfer Case Control Module in my Chevrolet?
- Yes, you can use a scan tool to clear the code after resolving the communication problem with the Transfer Case Control Module. This will reset the check engine light and allow you to monitor for any recurring issues.
9. Are there any recalls or technical service bulletins related to the U0102 code and the Transfer Case Control Module in Chevrolet vehicles?
- It is recommended to check with a Chevrolet dealership or online resources for any recalls or technical service bulletins related to the U0102 code and the Transfer Case Control Module in your specific vehicle model.
10. How can I prevent the U0102 code from reoccurring in my Chevrolet after repairing the Transfer Case Control Module communication issue?
- To prevent the U0102 code from reoccurring, it is essential to properly maintain the vehicle, address any underlying electrical issues promptly, and follow recommended maintenance schedules provided by Chevrolet.
Discuss the causes and fixes for U0102 Chevrolet OBDII Code
Code U0102 Chevrolet comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
