AutoCodes – GMC – B2597 GMC

B2597 GMC Code - Traction Control System Switch Circuit

Quick Answer

The Traction Control and Active Handling indicator is controlled by the instrument cluster via serial data messages from the Electronic Brake Control Module (EBCM). Common causes include Faulty Traction Control System Switch, Traction Control System Switch harness is open or shorted, Traction Control System Switch 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
B2597 GMC indicates Traction Control System Switch Circuit.
Common causes
Common causes include Faulty Traction Control System Switch, Traction Control System Switch harness is open or shorted, Traction Control System Switch 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 1,029
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 05, 2020
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Code B2597 GMC Description

The Traction Control and Active Handling indicator is controlled by the instrument cluster via serial data messages from the Electronic Brake Control Module (EBCM). When the Body Control Module (BCM) sees the traction control switch input grounded through the momentary traction control switch, it sends a serial data message to the EBCM that tells the EBCM that the traction control switch has been pressed. The EBCM then disables TCS and VSES. The EBCM sends a serial data message to the instrument cluster to turn the Traction Control and Active Handling indicator ON and display the Traction System Off message or the Traction/Active Handling Off message ( on the DIC.
When the BCM sees the traction control switch input grounded for 5 seconds while the vehicle is stopped and the ignition is ON, it sends a serial data message to the EBCM that tells the EBCM that the traction control switch has been pressed for 5 seconds. The EBCM then disables TCS, while leaving VSES enabled. The EBCM sends a serial data message to the instrument cluster display the Competitive Driving message on the DIC. The Traction Control and Active Handling indicator remains OFF.
OBDII Code B2597 GMC - Traction Control System Switch Circuit - AutoCodes.com
B2597 GMC Code - Traction Control System Switch Circuit

What are the Possible Causes of the DTC B2597 GMC?

  • Faulty Traction Control System Switch
  • Traction Control System Switch harness is open or shorted
  • Traction Control System Switch circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B2597 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 B2597 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 B2597 GMC Code

1. What are the common symptoms of OBDII code B2597 GMC related to the Traction Control System Switch Circuit?

- Common symptoms include the traction control light being illuminated on the dashboard, issues with the traction control system functionality, and potential stability control issues.

2. What can cause the OBDII code B2597 GMC to trigger for the Traction Control System Switch Circuit?

- The code B2597 GMC can be triggered by a faulty traction control switch, wiring issues in the circuit, or a malfunction in the traction control module.

3. How can I diagnose the Traction Control System Switch Circuit issue related to code B2597 GMC?

- To diagnose the issue, you can start by checking the traction control switch for proper function, inspecting the wiring for any visible damage, and using a diagnostic scan tool to read the code and identify the exact problem.

4. Are there any simple repair tips for fixing the OBDII code B2597 GMC in the Traction Control System Switch Circuit?

- Some simple repair tips include checking and replacing any damaged wiring, testing and possibly replacing the traction control switch, and resetting the system after repairs are made.

5. Can driving with the OBDII code B2597 GMC present cause any further damage to the vehicle?

- While driving with the code B2597 GMC related to the Traction Control System Switch Circuit may not cause immediate damage, it is recommended to address the issue promptly to ensure proper functionality of the traction control system.

6. Is it safe to continue driving my vehicle if the traction control light is on due to code B2597 GMC?

- It is generally safe to drive the vehicle with the traction control light on, but it is important to drive cautiously as the traction control system may not function properly, especially in slippery road conditions.

7. Can I reset the OBDII code B2597 GMC related to the Traction Control System Switch Circuit myself?

- You can attempt to reset the code by using a diagnostic scan tool to clear the code after addressing the underlying issue with the traction control system.

8. How much does it typically cost to repair the Traction Control System Switch Circuit issue causing OBDII code B2597 GMC?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

9. Will the OBDII code B2597 GMC clear on its own over time?

- The code B2597 GMC will not clear on its own unless the underlying issue with the Traction Control System Switch Circuit is resolved and the code is manually cleared using a diagnostic scan tool.

10. Can I drive my vehicle without traction control if the Traction Control System Switch Circuit issue is not repaired?

- It is not recommended to drive without a properly functioning traction control system, as it can affect the vehicle's stability and handling, especially in challenging road conditions.

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