AutoCodes – GMC – U183A GMC

U183A GMC Code - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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: U183A GMC indicates Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus.
Common causes: Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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.

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Code Popularity 823

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U183A GMC Description

The serial data circuit is the means by which 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 Code (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. 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 the 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. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U183A GMC - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus - AutoCodes.com — U183A GMC Code - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U183A GMC?

Faulty Telematics Communication Interface Control Module
Telematics Communication Interface Control Module harness is open or shorted
Telematics Communication Interface Control Module circuit poor electrical connection

How to Fix the DTC U183A 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 U183A 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U183A GMC Code

1. What are the common symptoms of OBDII code U183A in a GMC vehicle?

- Common symptoms include loss of communication with telematics systems, malfunction indicator light (MIL) illumination, erratic behavior of infotainment systems, and potential loss of certain vehicle functions.

2. What can cause the U183A code to be triggered in a GMC vehicle?

- The U183A code is typically triggered when there is a communication failure between the vehicle's high-speed Controller Area Network (CAN) bus and the Telematics Communication Interface Control Module. This can be due to wiring issues, module failure, or software glitches.

3. How can I diagnose the U183A code in my GMC vehicle?

- Diagnosis involves using a professional OBDII scanner to retrieve the specific code, checking the wiring connections to the telematics module, and performing a thorough inspection of the module itself for any physical damage or signs of failure.

4. Is it safe to continue driving my GMC vehicle with the U183A code present?

- It is generally not recommended to drive the vehicle with the U183A code present, as it may lead to potential safety risks due to the loss of communication with critical vehicle systems. It's best to address the issue promptly.

5. What are some repair tips for resolving the U183A code in a GMC vehicle?

- Repair tips include checking and repairing any damaged wiring harnesses, ensuring proper connections to the telematics module, updating module software if available, and replacing the module if necessary.

6. Can a DIY enthusiast fix the U183A code issue in a GMC vehicle?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, resolving the U183A code may require advanced diagnostic tools and technical knowledge. It is recommended to consult a professional technician for accurate diagnosis and repairs.

7. Are there any recalls or technical service bulletins related to the U183A code in GMC vehicles?

- It's advisable to check with the manufacturer or authorized service centers for any recalls or technical service bulletins related to the U183A code in specific GMC models. This information can help in understanding common issues and potential solutions.

8. How much does it typically cost to repair the U183A code in a GMC vehicle?

- The cost of repairing the U183A code can vary depending on the underlying cause, labor rates, and parts required. It's recommended to obtain quotes from reputable repair shops or dealerships for an accurate estimate.

9. Can resetting the OBDII code U183A temporarily resolve the issue in a GMC vehicle?

- Resetting the code may temporarily clear the MIL light, but if the underlying issue causing the U183A code is not addressed, it is likely to reoccur. It's important to diagnose and fix the root cause of the problem.

10. Is the U183A code specific to GMC vehicles, or can it occur in other car makes as well?

- The U183A code is specific to GMC vehicles and may not be applicable to other car makes. However, similar communication issues with telematics modules can occur in vehicles from other manufacturers, triggering different diagnostic trouble codes.