AutoCodes – GMC – U1097 GMC

U1097 GMC Code - Loss Of Driver Information Center Communications

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Driver Information Center (DIC), Driver Information Center harness is open or shorted, Driver Information Center 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: U1097 GMC indicates Loss Of Driver Information Center Communications.
Common causes: Common causes include Faulty Driver Information Center (DIC), Driver Information Center harness is open or shorted, Driver Information Center 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 513

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1097 GMC Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1097 is set.

OBDII Code U1097 GMC - Loss Of Driver Information Center Communications - AutoCodes.com — U1097 GMC Code - Loss Of Driver Information Center Communications

What does this mean?

What are the Possible Causes of the DTC U1097 GMC?

Faulty Driver Information Center (DIC)
Driver Information Center harness is open or shorted
Driver Information Center circuit poor electrical connection

How to Fix the DTC U1097 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 U1097 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 U1097 GMC Code

1. What are the common symptoms of OBDII code U1097 GMC?

- Common symptoms include a loss of communication with the Driver Information Center (DIC), malfunction indicator light (MIL) illumination, and issues with vehicle information display.

2. What can cause the OBDII code U1097 GMC to trigger?

- The code U1097 GMC is triggered when there is a communication failure between the body control module (BCM) and the DIC in the vehicle.

3. How can I diagnose the cause of the U1097 GMC code?

- Diagnosing the U1097 GMC code involves checking the wiring connections between the BCM and DIC, inspecting for any damaged wires, and ensuring proper power and ground connections.

4. Can a faulty DIC module cause the U1097 GMC code?

- Yes, a faulty DIC module can be a possible cause of the U1097 GMC code. It is recommended to perform thorough diagnostic testing before replacing any components.

5. Is it safe to continue driving with the U1097 GMC code present?

- While the vehicle may still be operable with the U1097 GMC code, it is advisable to address the issue promptly to prevent potential loss of important information display and other related problems.

6. Are there any simple repairs I can attempt to fix the U1097 GMC code?

- Simple repairs for the U1097 GMC code may include checking and tightening the wiring connections, ensuring proper grounding, and resetting the BCM to re-establish communication.

7. Can I clear the U1097 GMC code with an OBDII scanner?

- Yes, an OBDII scanner can be used to clear the U1097 GMC code after addressing the underlying communication issue between the BCM and DIC.

8. What are the potential long-term effects of ignoring the U1097 GMC code?

- Ignoring the U1097 GMC code may lead to continued loss of communication with the DIC, affecting access to vital vehicle information and potentially causing other related electrical issues.

9. How much does it typically cost to repair the U1097 GMC code?

- The cost of repairing the U1097 GMC code can vary depending on the underlying cause, but it may involve labor charges for diagnosis and potential replacement of components such as wiring harnesses or modules.

10. Can a dealership or mechanic help with diagnosing and repairing the U1097 GMC code?

- Yes, seeking assistance from a dealership or qualified mechanic is recommended for diagnosing and repairing the U1097 GMC code, especially if the issue involves complex electrical systems.