AutoCodes – GMC – B3094 GMC

B3094 GMC Code - No Response From PCM Received

Quick Answer

The Body Control Module (BCM) receives a vehicle security powertrain status message from the Powertrain Control Module (PCM) through the Class 2 serial data link when turning the ignition switch ON. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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: B3094 GMC indicates No Response From PCM Received.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module (PCM) harness is open or shorted, Powertrain Control Module (PCM) 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 498

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3094 GMC Description

The Body Control Module (BCM) receives a vehicle security powertrain status message from the Powertrain Control Module (PCM) through the Class 2 serial data link when turning the ignition switch ON. The BCM sets Diagnostic Trouble Code (DTC) B3094 when the BCM does not receive a vehicle security powertrain status message from the PCM within one minute of turning the ignition switch ON.

OBDII Code B3094 GMC - No Response From PCM Received - AutoCodes.com — B3094 GMC Code - No Response From PCM Received

What does this mean?

What are the Possible Causes of the DTC B3094 GMC?

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

How to Fix the DTC B3094 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 B3094 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 B3094 GMC code?

Need more information on how to fix the B3094 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3094 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 B3094 GMC Code

1. What are the common symptoms of OBDII code B3094 GMC (No Response From PCM Received)?

The common symptoms include the check engine light illuminating, the vehicle going into limp mode, and potential issues with engine performance.

2. What are the possible causes of OBDII code B3094 GMC?

Possible causes include a faulty PCM (Powertrain Control Module), wiring issues, poor electrical connections, or a software glitch.

3. How can I diagnose OBDII code B3094 GMC?

Diagnosis typically involves using a diagnostic scanner to retrieve the code, checking the PCM connections and wiring, and performing a thorough inspection for any visible damage.

4. What repairs are typically needed for OBDII code B3094 GMC?

Repairs may involve repairing or replacing damaged wiring, ensuring proper electrical connections, or replacing the PCM if it is determined to be faulty.

5. Can OBDII code B3094 GMC be fixed at home, or do I need a professional mechanic?

Depending on your level of automotive repair expertise, you may be able to address wiring issues or connections at home. However, diagnosing and replacing the PCM may require the expertise of a professional mechanic.

6. Is it safe to continue driving with OBDII code B3094 GMC present?

It is not recommended to continue driving with this code present, as it can lead to further engine performance issues or potential safety hazards. It is best to address the problem promptly.

7. How much does it typically cost to repair OBDII code B3094 GMC?

The cost of repair can vary depending on the specific cause of the issue. Repair costs may range from a simple wiring repair to a more involved PCM replacement, which can be more expensive.

8. Can a software update resolve OBDII code B3094 GMC?

In some cases, a software update provided by the manufacturer may address issues related to the PCM communication problem. Consulting with a dealership or qualified mechanic can help determine if this is a viable solution.

9. Are there any preventative measures to avoid OBDII code B3094 GMC in the future?

Regular maintenance checks, ensuring proper electrical connections, and addressing any wiring issues promptly can help prevent the occurrence of this code in the future.

10. Will resetting the OBDII code B3094 GMC make it go away permanently?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the problem.