B1370 2017 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 2017 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.
Code B1370 2017 Chevrolet Silverado Description
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.
What are the Possible Causes of the DTC B1370 2017 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 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.
Code Tech Notes
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 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.
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Frequently Asked Questions about B1370 2017 Chevrolet Silverado Code
1. What does the OBDII code B1370 mean on a 2017 Chevrolet Silverado?
B1370 indicates an issue with the "Control Module Ignition ON and Start Circuit," suggesting a fault in the electrical circuit responsible for ignition and starting.
2. What are the symptoms of code B1370 in a 2017 Chevrolet Silverado?
Symptoms may include the engine failing to start, intermittent starting issues, dashboard warning lights, or difficulty turning the ignition key.
3. What causes the B1370 code to appear on a 2017 Chevrolet Silverado?
Common causes include a damaged ignition switch, faulty wiring or connectors in the ignition circuit, a malfunctioning control module, or a weak battery.
4. How can I diagnose a B1370 code in my Silverado?
Check for loose or corroded wiring, inspect the ignition switch, test the battery voltage, and use a diagnostic scanner to confirm the fault.
5. Can a weak battery trigger the B1370 code?
Yes, a weak or failing battery can cause voltage fluctuations, potentially triggering the B1370 code.
6. Is it safe to drive with a B1370 code on a 2017 Chevrolet Silverado?
Driving with this code is not recommended, as it may lead to starting failures or further damage to the ignition system.
7. How do I fix the B1370 code on my Silverado?
Repairs may include replacing a faulty ignition switch, repairing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the control module.
8. Can the B1370 code clear itself after repairs?
The code may clear after repairs, but it’s best to use an OBDII scanner to erase it and confirm the issue is resolved.
9. How much does it cost to fix the B1370 code on a 2017 Chevrolet Silverado?
Repair costs can range from $100 to $500 or more, depending on whether it’s a simple wiring issue or the control module needs replacement.
10. Do I need a professional mechanic to fix a B1370 code?
While some issues, like checking connections, can be done at home, diagnosing and repairing electrical components may require a professional with specialized tools.
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