B1370 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra 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 2016 GMC Sierra?
- 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 2016 GMC Sierra?
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
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1370 2016 GMC Sierra 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 2016 GMC Sierra code?
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Frequently Asked Questions about B1370 2016 GMC Sierra Code
1. What does OBDII code B1370 for a 2016 GMC Sierra indicate?
This code, Control Module Ignition ON and Start Circuit, suggests a problem with the ignition switch circuit for starting the vehicle.
2. What are the common symptoms of OBDII code B1370 in a GMC Sierra?
Common symptoms include difficulty starting the vehicle, intermittent or no crank condition, and potential issues with the vehicle's electrical system.
3. What are the possible causes of OBDII code B1370 in a 2016 GMC Sierra?
The code may be triggered by a faulty ignition switch, wiring issues in the ignition circuit, a defective control module, or a problem with the starter system.
4. How can I diagnose the cause of OBDII code B1370 in my GMC Sierra?
Diagnosing this code may involve checking the ignition switch operation, inspecting the wiring for any damage, testing the control module, and verifying the functionality of the starter system.
5. Can OBDII code B1370 be fixed at home, or do I need professional help?
Depending on your automotive repair skills and access to tools, you may be able to address this code at home by performing basic checks and repairs. However, if you are unsure or encounter complex issues, seeking professional help is recommended.
6. Are there any DIY repair tips for fixing OBDII code B1370 in a 2016 GMC Sierra?
DIY repair tips include ensuring the ignition switch is functioning correctly, checking for loose or damaged wiring connections, and consulting the vehicle's repair manual for specific troubleshooting steps.
7. Will OBDII code B1370 prevent my GMC Sierra from starting?
While the code is related to the ignition ON and start circuit, it may or may not prevent the vehicle from starting. It is essential to address the underlying issue promptly to avoid potential starting problems.
8. How urgent is it to address OBDII code B1370 in a GMC Sierra?
Addressing this code promptly is recommended to prevent potential starting issues and ensure the proper operation of the vehicle's ignition system.
9. Can resetting the OBDII system clear the B1370 code in a 2016 GMC Sierra?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not resolved, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem.
10. Is OBDII code B1370 a common issue in 2016 GMC Sierra vehicles?
While the occurrence of this specific code may vary, issues related to the ignition circuit and starting system can be encountered in 2016 GMC Sierra vehicles, making it essential to address them promptly for reliable vehicle operation.
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