AutoCodes – Chevrolet – B1370 2015 Chevrolet Silverado

B1370 2015 Chevrolet Silverado Code - Control Module Ignition ON and Start Circuit

Quick Answer

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). 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: B1370 2015 Chevrolet Silverado indicates Control Module Ignition ON and Start Circuit.
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 593

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 Apr 17, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1370 2015 Chevrolet Silverado Description

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). The ignition switch is a low-current switch with multiple discrete circuits to the BCM. The BCM logic uses the ignition switch positions to identify the operator's desired power mode and activate specific discrete signals, and serial data messages for the operation of different subsystems as necessary. Other modules which have switched voltage inputs may operate in a default mode if the Power Mode Master serial data message does not match what the individual module can detect from its own connections.
The Power Mode Master will activate relays and other direct outputs of the Power Mode Master as needed according to the calculated power mode. Some relays controlled by the BCM are switched ignition voltage outputs that are pass-through circuits within the BCM directly from the ignition switch. If these circuits are short to ground, the B+ circuit fuse to the ignition switch will open.

OBDII Code B1370 2015 Chevrolet Silverado - Control Module Ignition ON and Start Circuit - AutoCodes.com — B1370 2015 Chevrolet Silverado Code - Control Module Ignition ON and Start Circuit

What does this mean?

What are the Possible Causes of the DTC B1370 2015 Chevrolet Silverado?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Body Control Module (BCM)
Faulty Instrument Cluster (If code is stored in Instrument Cluster)

How to Fix the DTC B1370 2015 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 does this mean?

Code Tech Notes

B1370:01 Control Module Ignition ON and Start Circuit Short to Battery
B1370:04 Control Module Ignition ON and Start Circuit Short to Ground or Open

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1370 2015 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 B1370 2015 Chevrolet Silverado code?

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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 B1370 2015 Chevrolet Silverado Code

1. What does the OBDII code B1370 for a 2015 Chevrolet Silverado indicate?

The B1370 code indicates a problem with the Control Module Ignition ON and Start Circuit.

2. What are common symptoms of the B1370 OBDII code in a 2015 Chevrolet Silverado?

Common symptoms include difficulty starting the vehicle, engine stalling, or the engine not starting at all.

3. What are possible causes of the B1370 code in a 2015 Chevrolet Silverado?

Possible causes include a faulty ignition switch, wiring issues, a defective control module, or a blown fuse related to the ignition system.

4. How can I diagnose the B1370 code in my 2015 Chevrolet Silverado?

Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the ignition system components, checking for loose or damaged wiring, and testing the control module.

5. Can I still drive my 2015 Chevrolet Silverado with the B1370 code present?

It is not recommended to drive the vehicle with the B1370 code present, as it may lead to further damage or safety hazards.

6. How do I repair the B1370 code in my 2015 Chevrolet Silverado?

Repair methods may include replacing the faulty ignition switch, repairing or replacing damaged wiring, replacing the control module, or addressing any blown fuses.

7. Is it necessary to reset the OBDII system after repairing the B1370 code in a 2015 Chevrolet Silverado?

Yes, it is recommended to clear the trouble codes and reset the OBDII system after repairing the issue to ensure proper functionality.

8. Can a DIY enthusiast fix the B1370 code in a 2015 Chevrolet Silverado?

While some aspects of diagnosing and repairing the B1370 code may be DIY-friendly, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

9. How much does it typically cost to repair the B1370 code in a 2015 Chevrolet Silverado?

The cost of repair can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

10. How can I prevent the B1370 code from reoccurring in my 2015 Chevrolet Silverado?

Regular maintenance of the ignition system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the B1370 code from reoccurring.