AutoCodes – Chevrolet – P0703 2017 Chevrolet Silverado

P0703 2017 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 2017 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 331

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 Jul 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0703 2017 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 2017 Chevrolet Silverado - Brake Switch Signal Message Counter Incorrect - AutoCodes.com — P0703 2017 Chevrolet Silverado Code - Brake Switch Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P0703 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P0703 2017 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 2017 Chevrolet Silverado Code

1. What does the OBDII code P0703 mean on a 2017 Chevrolet Silverado?

P0703 indicates an issue with the brake switch signal, specifically that the message counter is incorrect or inconsistent.

2. What are common symptoms of the P0703 code on a 2017 Silverado?

Symptoms may include the brake lights not functioning correctly, issues with the cruise control, or delayed shifting in the transmission.

3. What causes the P0703 code on a 2017 Chevrolet Silverado?

Common causes include a faulty or misaligned brake light switch, damaged wiring or connectors in the circuit, or issues with the vehicle's PCM (Powertrain Control Module).

4. Can I drive my 2017 Silverado with the P0703 code active?

Driving with the P0703 code is not recommended, as it can affect safety systems like brake lights and cruise control, potentially leading to unsafe driving conditions.

5. How do I fix the P0703 code on a 2017 Chevrolet Silverado?

Repairs may involve adjusting or replacing the brake light switch, repairing damaged wiring, or clearing the code and reprogramming the PCM if necessary.

6. How is the P0703 code diagnosed on a 2017 Silverado?

A technician will use a scan tool to check for related codes, inspect the brake switch and wiring, and test the signal output to identify inconsistencies.

7. Can a faulty brake light bulb cause the P0703 code?

No, the P0703 code specifically relates to the brake switch signal message, not the brake light bulbs themselves.

8. How much does it cost to repair the P0703 code on a 2017 Chevrolet Silverado?

Repair costs vary but typically range from $50 to $200, depending on whether the brake switch or wiring needs repair or replacement.

9. What tools are needed to fix the P0703 code on a 2017 Silverado?

Basic tools include a multimeter for testing wiring and a scan tool for reading and clearing the code. A replacement brake switch may also be required.

10. Can a dead battery trigger the P0703 code on a 2017 Chevrolet Silverado?

A weak or dead battery is unlikely to directly trigger the P0703 code, but voltage issues can sometimes lead to false codes or exacerbate electrical problems.