AutoCodes – Chevrolet – P0703 2014 Chevrolet Silverado

P0703 2014 Chevrolet Silverado Code - Brake Switch Signal Message Counter Incorrect

Quick Answer

The Body Control Module (BCM) monitors the brake pedal position sensor. Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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: P0703 2014 Chevrolet Silverado indicates Brake Switch Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module 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 418

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 Jul 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0703 2014 Chevrolet Silverado Description

The Body Control Module (BCM) monitors the brake pedal position sensor. When the brake pedal is applied, the BCM detects a predetermined voltage signal. The BCM sends a serial data message to the Engine Control Module (ECM) indicating the status of the stop lamps. The Diagnostic Trouble Code (DTC) will be set when the ECM receives an invalid brake pedal status serial data message from the BCM.

OBDII Code P0703 2014 Chevrolet Silverado - Brake Switch Signal Message Counter Incorrect - AutoCodes.com — P0703 2014 Chevrolet Silverado Code - Brake Switch Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P0703 2014 Chevrolet Silverado?

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

How to Fix the DTC P0703 2014 Chevrolet Silverado?

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 P0703 2014 Chevrolet Silverado 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 P0703 2014 Chevrolet Silverado code?

Need more information on how to fix the P0703 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P0703 2014 Chevrolet Silverado Code

1. What does the OBDII code P0703 mean on a 2014 Chevrolet Silverado?

P0703 indicates an issue with the brake switch signal message counter, meaning the transmission control module (TCM) is receiving an incorrect or unexpected signal from the brake switch.

2. What are the common symptoms of code P0703 on a 2014 Chevrolet Silverado?

Symptoms may include the brake lights not functioning properly, transmission shifting issues, or the cruise control not working.

3. What causes the P0703 code to appear on a 2014 Chevrolet Silverado?

Common causes include a faulty brake switch, damaged wiring or connectors in the brake switch circuit, or a malfunctioning transmission control module.

4. Can a faulty brake light switch trigger the P0703 code?

Yes, a faulty or misaligned brake light switch is a primary cause of the P0703 code.

5. How do I diagnose the P0703 code on my Silverado?

Start by checking the brake light function, inspecting the brake switch for alignment, testing the switch with a multimeter, and examining the wiring for damage or loose connections.

6. Is it safe to drive with a P0703 code on a 2014 Chevrolet Silverado?

Driving may be unsafe as the brake lights or cruise control might not work, and transmission shifting could be affected, increasing the risk of an accident.

7. How do I fix the P0703 code on a 2014 Chevrolet Silverado?

Repairs may include replacing the brake switch, repairing or replacing damaged wiring, or reprogramming the TCM if necessary.

8. Can a blown fuse cause the P0703 code?

Yes, a blown fuse in the brake light circuit can cause the P0703 code by disrupting the brake signal to the TCM.

9. Does the P0703 code affect the transmission on a 2014 Chevrolet Silverado?

Yes, the code can affect transmission operation because the TCM relies on accurate brake switch signals for proper shifting behavior.

10. How much does it cost to repair the P0703 code on a 2014 Chevrolet Silverado?

Repair costs vary depending on the issue, but replacing a brake light switch typically costs $50â€“$150, while wiring repairs or TCM reprogramming may cost more.