AutoCodes – GMC – B0976 GMC

B0976 GMC Code - Off Indicator Control Circuit

Quick Answer

The Ignition Mode Switch has 3 LEDs that indicate the vehicle power mode. Common causes include Faulty Ignition Mode Switch, Ignition Mode Switch harness is open or shorted, Ignition Mode 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: B0976 GMC indicates Off Indicator Control Circuit.
Common causes: Common causes include Faulty Ignition Mode Switch, Ignition Mode Switch harness is open or shorted, Ignition Mode 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 870

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 Nov 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0976 GMC Description

The Ignition Mode Switch has 3 LEDs that indicate the vehicle power mode. When the vehicle is in the Off mode, the Off LED may illuminate. Pressing the lower button of the ignition mode switch, the vehicle enters the accessory mode and ACC LED will illuminate. Keeping the lower button pressed for about 5-6 seconds, the vehicle enters run mode with the engine off and the START LED will illuminate. All these LEDs have the voltage supplied from the Body Control Module (BCM) through the ignition mode switch supply voltage circuit. The ground path for each LED is controlled by the BCM.

OBDII Code B0976 GMC - Off Indicator Control Circuit - AutoCodes.com — B0976 GMC Code - Off Indicator Control Circuit

What does this mean?

What are the Possible Causes of the DTC B0976 GMC?

Faulty Ignition Mode Switch
Ignition Mode Switch harness is open or shorted
Ignition Mode Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B0976 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 B0976 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 B0976 GMC Code

1. What are the common symptoms of OBDII code B0976 GMC (Off Indicator Control Circuit)?

The common symptoms include the off indicator light not functioning properly or not illuminating when it should.

2. What are the possible causes of OBDII code B0976 GMC?

Possible causes include a faulty off indicator control circuit, a malfunctioning indicator light, wiring issues, or a defective control module.

3. How can I diagnose the Off Indicator Control Circuit issue related to code B0976 GMC?

You can diagnose the issue by checking the wiring connections, testing the indicator light, and using a scan tool to monitor the off indicator control circuit's performance.

4. What repairs are typically needed to fix OBDII code B0976 GMC?

Repairs may involve repairing or replacing the off indicator control circuit, fixing any wiring issues, replacing the indicator light, or reprogramming the control module.

5. Can I drive my vehicle with OBDII code B0976 GMC?

It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the off indicator light.

6. How serious is OBDII code B0976 GMC?

This code is not considered a serious issue in terms of vehicle performance, but it can affect the visibility of important indicators on your dashboard.

7. How much does it typically cost to repair OBDII code B0976 GMC?

The cost of repairs can vary depending on the underlying cause, but it may range from $100 to $300 for parts and labor.

8. Can I reset OBDII code B0976 GMC without repairing the issue?

Resetting the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely reoccur.

9. How long does it take to repair OBDII code B0976 GMC?

The repair time can vary based on the specific cause of the issue, but it typically takes 1-2 hours for a mechanic to diagnose and fix the problem.

10. Is OBDII code B0976 GMC a common issue in GMC vehicles?

While it may not be as common as some other OBDII codes, issues with the Off Indicator Control Circuit can still occur in GMC vehicles and should be addressed promptly.