AutoCodes – Chevrolet – B1370 2014 Chevrolet Silverado

B1370 2014 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 2014 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 863

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 2014 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 2014 Chevrolet Silverado - Control Module Ignition ON and Start Circuit - AutoCodes.com — B1370 2014 Chevrolet Silverado Code - Control Module Ignition ON and Start Circuit

What does this mean?

What are the Possible Causes of the DTC B1370 2014 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 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 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 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 B1370 2014 Chevrolet Silverado code?

Need more information on how to fix the B1370 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 B1370 2014 Chevrolet Silverado Code

1. What does OBDII code B1370 for a 2014 Chevrolet Silverado mean?

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

2. What are the common symptoms of OBDII code B1370 in a 2014 Chevrolet Silverado?

Common symptoms include difficulty starting the vehicle, engine stalling, and issues with the ignition system.

3. What are the possible causes of OBDII code B1370 in a 2014 Chevrolet Silverado?

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

4. How can I diagnose the issue causing OBDII code B1370 in my 2014 Chevrolet Silverado?

Diagnosing the issue involves checking the ignition switch, inspecting the wiring for any damage, testing the control module, and verifying the integrity of related fuses.

5. Can I still drive my 2014 Chevrolet Silverado with OBDII code B1370 present?

It is not recommended to drive the vehicle with this code present, as it may lead to potential safety hazards and further damage to the ignition system.

6. How serious is OBDII code B1370 in a 2014 Chevrolet Silverado?

While the severity can vary, this code should be addressed promptly to ensure the proper functioning of the ignition system and avoid potential starting or stalling issues.

7. What are some DIY repair tips for fixing OBDII code B1370 in a 2014 Chevrolet Silverado?

DIY repair tips may include checking and replacing any blown fuses, inspecting wiring connections, and testing the ignition switch for proper functionality.

8. Do I need special tools to fix OBDII code B1370 in my 2014 Chevrolet Silverado?

While basic tools may be sufficient for some diagnostic steps, specialized tools like a multimeter or scan tool may be necessary for a more thorough diagnosis and repair.

9. Can resetting the OBDII system clear the B1370 code in a 2014 Chevrolet Silverado?

Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. Should I seek professional help to fix OBDII code B1370 in my 2014 Chevrolet Silverado?

If you are unsure about diagnosing or repairing the issue yourself, it is recommended to seek professional help to ensure the problem is properly resolved and prevent further complications.