AutoCodes – GMC – B2964 GMC

B2964 GMC Code - Key In Ignition Circuit High

Quick Answer

The Body Control Module (BCM) uses a key in ignition input in order to control certain features in the vehicle. Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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: B2964 GMC indicates Key In Ignition Circuit High.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition 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 581

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 Feb 20, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2964 GMC Description

The Body Control Module (BCM) uses a key in ignition input in order to control certain features in the vehicle. These features are in the following systems: Content Theft Deterrent (if equipped), Audible Warnings, and Automatic Door Locks.
The key in the ignition input circuit is grounded when you fully insert the ignition key into the ignition switch. This, in turn, pulls the BCM key in ignition input low.

OBDII Code B2964 GMC - Key In Ignition Circuit High - AutoCodes.com — B2964 GMC Code - Key In Ignition Circuit High

What does this mean?

What are the Possible Causes of the DTC B2964 GMC?

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

How to Fix the DTC B2964 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 B2964 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 B2964 GMC code?

Need more information on how to fix the B2964 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2964 GMC code diagnosed by a professional: Find a repair shop in your area

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 B2964 GMC Code

1. What are the common symptoms of OBDII code B2964 GMC (Key In Ignition Circuit High)?

- Common symptoms include the inability to start the vehicle, issues with the ignition system, and the key not being recognized.

2. What are the possible causes of OBDII code B2964 GMC?

- The code may be triggered by a faulty ignition switch, a damaged key, issues with the immobilizer system, or wiring problems in the key-in-ignition circuit.

3. How can I diagnose OBDII code B2964 GMC at home?

- You can start by checking the key for any physical damage, ensuring it is the correct key for the vehicle, and inspecting the wiring connected to the ignition switch for any visible issues.

4. Is it safe to drive with OBDII code B2964 GMC active?

- It is not recommended to drive with this code active, as it may result in the vehicle not starting or shutting off unexpectedly while driving.

5. Can I reset OBDII code B2964 GMC without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is essential to address the root cause to prevent the issue from reoccurring.

6. How much does it typically cost to repair OBDII code B2964 GMC?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $500, including parts and labor.

7. Are there any DIY repair tips for fixing OBDII code B2964 GMC?

- DIY repair tips may include checking and cleaning the key contacts, inspecting and repairing any damaged wiring, or replacing the ignition switch if necessary.

8. Can a locksmith help with OBDII code B2964 GMC related issues?

- Yes, a locksmith specializing in automotive keys and immobilizer systems may be able to assist in diagnosing and resolving the issue.

9. Will OBDII code B2964 GMC cause my vehicle to fail an emissions test?

- Depending on the regulations in your area, a persistent issue with this code may cause your vehicle to fail an emissions test, as it can affect the proper functioning of the ignition system.

10. How long does it take to repair OBDII code B2964 GMC?

- The repair time can vary based on the specific cause of the code and the availability of parts, but it may take anywhere from a few hours to a day to complete the repair.