U0197 GMC Code - Lost Communication With Telephone 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 Telephone Control Module, Telephone Control Module harness is open or shorted, Telephone 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
- U0197 GMC indicates Lost Communication With Telephone Control Module.
- Common causes
- Common causes include Faulty Telephone Control Module, Telephone Control Module harness is open or shorted, Telephone 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 U0197 GMC Description
What are the Possible Causes of the DTC U0197 GMC?
- Faulty Telephone Control Module
- Telephone Control Module harness is open or shorted
- Telephone Control Module circuit poor electrical connection
How to Fix the DTC U0197 GMC?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U0197 GMC 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.
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Frequently Asked Questions about U0197 GMC Code
1. What are the common symptoms of OBDII code U0197 in a GMC indicating a lost communication with the telephone control module?
- Common symptoms include issues with the vehicle's infotainment system, loss of communication with the hands-free calling feature, and possible error messages related to the telephone control module.
2. What are the typical causes of OBDII code U0197 in a GMC related to the lost communication with the telephone control module?
- The code U0197 can be triggered by a faulty telephone control module, wiring issues, blown fuses, software glitches, or a disconnected or damaged communication network.
3. How can I diagnose the OBDII code U0197 in my GMC when it indicates a lost communication with the telephone control module?
- Diagnosis involves checking the wiring connections to the telephone control module, inspecting fuses, using a scan tool to check for communication errors, and potentially performing a software update if recommended by the manufacturer.
4. Can a DIY enthusiast repair OBDII code U0197 in a GMC related to lost communication with the telephone control module?
- While basic checks like inspecting wiring and fuses can be done by DIY enthusiasts, resolving the underlying issues may require professional diagnostic equipment and expertise to identify and fix the problem effectively.
5. Are there any specific repair tips for addressing OBDII code U0197 in a GMC due to a lost communication with the telephone control module?
- Ensure all connections to the telephone control module are secure, check for any visible wiring damage, reset the module by disconnecting the battery for a few minutes, and consult the vehicle's service manual for specific troubleshooting steps.
6. How serious is the OBDII code U0197 in a GMC indicating a lost communication with the telephone control module?
- While the code might not affect the vehicle's drivability, it can lead to inconvenience by disrupting communication features like hands-free calling. Addressing the issue promptly is recommended to restore full functionality.
7. Is it safe to continue driving with the OBDII code U0197 in a GMC related to lost communication with the telephone control module?
- It is generally safe to drive the vehicle with this code, but it's advisable to address the underlying issue as soon as possible to prevent any further malfunctions in the communication system.
8. How much does it typically cost to repair OBDII code U0197 in a GMC due to a lost communication with the telephone control module?
- The cost of repair can vary depending on the cause of the communication loss, but it may involve expenses for diagnostic services, parts replacement, labor costs, and potential software updates.
9. Can the OBDII code U0197 in a GMC be intermittent, causing the communication with the telephone control module to be sporadic?
- Yes, intermittent issues with the telephone control module's communication can trigger the U0197 code in certain situations, making the problem harder to diagnose and potentially resolve.
10. Are there any recalls or technical service bulletins (TSBs) related to OBDII code U0197 in GMC vehicles with a lost communication with the telephone control module?
- It's advisable to check with the manufacturer or authorized service centers for any recalls or TSBs related to the U0197 code, as they may provide specific guidance or solutions for this issue.
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