AutoCodes – GMC – B2710 GMC

B2710 GMC Code - Open Key Pellet

Quick Answer

When the ignition key is inserted in the ignition, the resistance of the key pellet is measured. Common causes include Faulty Ignition Key, Faulty Steering Column Lock Cylinder, Faulty Instrument Panel Cluster (IPC). 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: B2710 GMC indicates Open Key Pellet.
Common causes: Common causes include Faulty Ignition Key, Faulty Steering Column Lock Cylinder, Faulty Instrument Panel Cluster (IPC).
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 573

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 Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2710 GMC Description

When the ignition key is inserted in the ignition, the resistance of the key pellet is measured. Resistance is compared with resistance value stored in the Instrument Panel Cluster (IPC) memory. DTC B2710 will set when an open or zero resistance value is measured from key pellet prior to obtaining a valid resistance reading. DTC B2711 will set when an open or zero resistance value is measured from key pellet following a valid resistance reading. When DTC B2710 is set as current, IPC will display STARTING DISABLED, REMOVE IGNITION KEY message on drivers message center and prevent the vehicle from starting. When DTC B2711 is set as current, IPC will display THEFT SYSTEM PROBLEM, CAR MAY NOT RESTART message on drivers message center and allow the vehicle to continue to run.

OBDII Code B2710 GMC - Open Key Pellet - AutoCodes.com — B2710 GMC Code - Open Key Pellet

What does this mean?

What are the Possible Causes of the DTC B2710 GMC?

Faulty Ignition Key
Faulty Steering Column Lock Cylinder
Faulty Instrument Panel Cluster (IPC)

How to Fix the DTC B2710 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 B2710 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 B2710 GMC code?

Need more information on how to fix the B2710 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2710 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 B2710 GMC Code

1. What does the OBDII code B2710 mean for a GMC vehicle?

The B2710 code indicates an issue with the Open Key Pellet, which is part of the vehicle's Passlock or Passkey system, responsible for detecting the ignition key's resistance value.

2. What are common symptoms of the B2710 code in GMC vehicles?

Symptoms may include the engine not starting, the security light staying on or flashing, and intermittent starting issues.

3. What causes the B2710 code to trigger in a GMC?

Common causes include a damaged or worn ignition key, a faulty ignition cylinder, broken wires in the key pellet circuit, or a malfunctioning Passlock module.

4. Can a worn ignition key trigger the B2710 code?

Yes, a worn or damaged key can cause the vehicle's system to misread the resistance value, leading to the B2710 code.

5. How can I fix the B2710 code in my GMC?

Fixes include replacing the ignition key, repairing or replacing the ignition cylinder, checking and repairing circuit wiring, or reprogramming the Passlock module if needed.

6. Is it safe to drive with the B2710 code present?

Driving may be possible, but starting issues can worsen over time. It's recommended to address the issue promptly to avoid being stranded.

7. How is the B2710 code diagnosed in a GMC vehicle?

A technician will use a scan tool to confirm the code, inspect the ignition key and cylinder, check the resistance value of the key pellet, and test the related wiring and Passlock module.

8. Can I bypass the Passlock system to resolve the B2710 code?

While bypassing the Passlock system is possible, it is not recommended as it compromises vehicle security and may void warranties.

9. Does replacing the ignition key always fix the B2710 code?

Not always. If the issue lies in the ignition cylinder, wiring, or Passlock module, these components will also need to be repaired or replaced.

10. Can a dead battery cause the B2710 code to appear in a GMC?

A dead battery itself won't cause the code, but low voltage during starting could potentially affect the Passlock system and trigger the security light.