AutoCodes – GMC – B0997 GMC

B0997 GMC Code - Auxiliary Electronic Control Unit Performance

Quick Answer

The Info Display Module monitors itself for internal failures and reports its condition to the Human Machine Interface Control Module when requested. Common causes include Faulty Info Display Module (Radio Controls) (Radio Assembly), Info Display Module harness is open or shorted, Info Display 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
B0997 GMC indicates Auxiliary Electronic Control Unit Performance.
Common causes
Common causes include Faulty Info Display Module (Radio Controls) (Radio Assembly), Info Display Module harness is open or shorted, Info Display 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 238
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 04, 2023
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Code B0997 GMC Description

The Info Display Module monitors itself for internal failures and reports its condition to the Human Machine Interface Control Module when requested. The info display also reports electronic identification information when requested. The Diagnostic Trouble Code (DTC) will be set if the Info Display Module has reported identification information that differs from the information calibrated in the Human Machine Interface Control Module or if the Info Display Module reports an internal malfunction.
*The Info Display Module and radio controls can be separate components from the radio or combined with the radio into one assembly.
OBDII Code B0997 GMC - Auxiliary Electronic Control Unit Performance - AutoCodes.com
B0997 GMC Code - Auxiliary Electronic Control Unit Performance

What are the Possible Causes of the DTC B0997 GMC?

  • Faulty Info Display Module (Radio Controls) (Radio Assembly)
  • Info Display Module harness is open or shorted
  • Info Display Module circuit poor electrical connection

How to Fix the DTC B0997 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 B0997 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.

Need more information about the B0997 GMC code?

Need more information on how to fix the B0997 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0997 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 B0997 GMC Code

1. What are the common symptoms of OBDII code B0997 GMC (Auxiliary Electronic Control Unit Performance)?

- Common symptoms include erratic behavior of electronic components, malfunctioning auxiliary systems, and warning lights on the dashboard.

2. What are the possible causes of OBDII code B0997 GMC?

- The code B0997 GMC can be triggered by issues with the auxiliary electronic control unit, wiring faults, software glitches, or a faulty component within the control unit.

3. How can I diagnose the OBDII code B0997 GMC?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the code, followed by inspecting the auxiliary electronic control unit, wiring connections, and related components for any visible issues.

4. Can I drive my vehicle with the OBDII code B0997 GMC present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the electronic systems and potentially compromise the safety and performance of the vehicle.

5. How can I repair OBDII code B0997 GMC?

- Repairing the code may involve resetting the control unit, repairing or replacing faulty wiring, addressing software issues, or replacing the auxiliary electronic control unit if necessary.

6. Are there any DIY tips for fixing OBDII code B0997 GMC?

- DIY tips may include checking and securing wiring connections, ensuring proper grounding, and following the manufacturer's recommended diagnostic and repair procedures.

7. Will OBDII code B0997 GMC cause my vehicle to fail an emissions test?

- Yes, the presence of this code may cause your vehicle to fail an emissions test, as it indicates a performance issue with the auxiliary electronic control unit.

8. How much does it typically cost to repair OBDII code B0997 GMC?

- The cost of repairing this code can vary depending on the underlying issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a mechanic clear the OBDII code B0997 GMC without fixing the issue?

- While a mechanic can clear the code temporarily, it is crucial to address the root cause of the problem to prevent it from recurring and potentially causing further issues.

10. Is it safe to continue driving if the OBDII code B0997 GMC appears intermittently?

- It is not recommended to ignore intermittent appearances of this code, as it could indicate an underlying issue that may worsen over time. It is best to have the vehicle inspected and repaired promptly.

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