AutoCodes – GMC – U0193 GMC

U0193 GMC Code - Lost Communication With Digital Radio Receiver 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 Digital Radio Receiver Control Module, Digital Radio Receiver Control Module harness is open or shorted, Digital Radio Receiver 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: U0193 GMC indicates Lost Communication With Digital Radio Receiver Control Module.
Common causes: Common causes include Faulty Digital Radio Receiver Control Module, Digital Radio Receiver Control Module harness is open or shorted, Digital Radio Receiver 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 602

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 Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0193 GMC Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Digital Radio Receiver Control Module has not been received.

OBDII Code U0193 GMC - Lost Communication With Digital Radio Receiver Control Module - AutoCodes.com — U0193 GMC Code - Lost Communication With Digital Radio Receiver Control Module

What does this mean?

What are the Possible Causes of the DTC U0193 GMC?

Faulty Digital Radio Receiver Control Module
Digital Radio Receiver Control Module harness is open or shorted
Digital Radio Receiver Control Module circuit poor electrical connection

How to Fix the DTC U0193 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 U0193 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 U0193 GMC Code

1. What are the common symptoms of OBDII code U0193 GMC?

The common symptoms of code U0193 include loss of functionality in the digital radio system, radio display issues, and the inability to control radio settings.

2. What can cause the OBDII code U0193 GMC to trigger?

The code U0193 is triggered when the digital radio receiver control module fails to communicate properly with the vehicle's onboard computer system.

3. How can I diagnose the cause of code U0193 GMC?

Diagnosing the cause of code U0193 typically involves checking the connections to the digital radio receiver control module, inspecting the module for damage, and using a diagnostic scanner to read the specific error codes.

4. What are some possible repair options for OBDII code U0193 GMC?

Repair options for code U0193 may include repairing or replacing the digital radio receiver control module, checking and repairing any damaged wiring or connections, and resetting the vehicle's onboard computer system.

5. Can I drive my vehicle with OBDII code U0193 GMC?

While it may be possible to drive the vehicle with the U0193 code, it is not recommended as it can lead to further electrical issues and potentially affect other vehicle systems.

6. How much does it typically cost to repair OBDII code U0193 GMC?

The cost of repairing code U0193 can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for simple repairs to over a thousand dollars for module replacement.

7. Is it possible to reset OBDII code U0193 GMC without professional help?

In some cases, you may be able to reset the U0193 code by disconnecting the vehicle's battery for a few minutes. However, it is recommended to diagnose and repair the underlying issue to prevent the code from reoccurring.

8. Can extreme weather conditions cause OBDII code U0193 GMC to trigger?

Extreme weather conditions such as extreme cold or heat can potentially affect the digital radio receiver control module and lead to communication issues, triggering the U0193 code.

9. Are there any preventive measures to avoid OBDII code U0193 GMC?

To prevent code U0193, it is recommended to perform regular maintenance checks on the vehicle's electrical components, keep the radio system clean and free of debris, and address any issues promptly.

10. Will disconnecting the battery reset OBDII code U0193 GMC?

Disconnecting the battery may reset the code temporarily, but if the underlying issue causing the U0193 code is not addressed, it is likely to reappear. It is best to diagnose and repair the problem to prevent further issues.