B1370 GMC Code - Control Module Ignition ON and Start Circuit
Quick Answer
The B1370 GMC code indicates a problem with the control module ignition ON and start circuit in the vehicle. Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition circuit, Malfunctioning control module. 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 GMC indicates Control Module Ignition ON and Start Circuit.
- Common causes
- Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition circuit, Malfunctioning control module.
- 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 B1370 GMC Description
The B1370 GMC code indicates a problem with the control module ignition ON and start circuit in the vehicle. This code is typically found in GMC vehicles and is related to issues with the ignition system. When this code is triggered, it means that the control module is not receiving the proper signals when the ignition is turned on or when the vehicle is being started. This can lead to a variety of issues that can affect the vehicle's performance and overall functionality.
Common Causes of B1370 GMC
- Faulty ignition switch
- Damaged wiring or connectors in the ignition circuit
- Malfunctioning control module
- Weak or dead battery
- Corrosion or poor connections in the electrical system
Symptoms of B1370 GMC
- Difficulty starting the vehicle
- Engine stalling or rough idling
- Engine misfires
- Loss of power while driving
- Illumination of the check engine light
How to Fix B1370 GMC
- Perform a thorough inspection of the ignition system and wiring to identify any damaged components.
- Test the battery and charging system to ensure they are functioning properly.
- Replace any faulty ignition switch, control module, or wiring as needed.
- Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.
- Perform a final check to verify that the vehicle starts and runs smoothly without any issues.
Cost to Fix B1370 GMC
The cost of repairing the B1370 GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, you can expect to pay anywhere from $100 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's best to check with your local shop for a more accurate estimate.
Tech Notes for B1370 GMC
B1370:04 Control Module Ignition ON and Start Circuit Short to Ground or Open
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Information for Specific GMC Models
- B1370 2014 GMC Sierra — Control Module Ignition ON and Start Circuit
- B1370 2015 GMC Sierra — Control Module Ignition ON and Start Circuit
- B1370 2016 GMC Sierra — Control Module Ignition ON and Start Circuit
- B1370 2017 GMC Sierra — Control Module Ignition ON and Start Circuit
- B1370 2018 GMC Sierra — Control Module Ignition ON and Start Circuit
Frequently Asked Questions about B1370 GMC Code
1. What are the common symptoms of OBDII code B1370 GMC?
- The common symptoms include the engine not starting, the vehicle not responding when the key is turned, and issues with the ignition system.
2. What can cause the OBDII code B1370 GMC to trigger?
- The code is typically triggered when there is a fault in the control module ignition ON and start circuit, such as a wiring issue or a malfunctioning ignition switch.
3. How can I diagnose the cause of OBDII code B1370 GMC?
- Diagnosing the code involves checking the wiring connections, inspecting the ignition switch for faults, and testing the control module for proper function.
4. Can a faulty battery cause OBDII code B1370 GMC to appear?
- Yes, a weak or faulty battery can sometimes cause issues with the control module ignition ON and start circuit, leading to the code being triggered.
5. What repair tips can help resolve OBDII code B1370 GMC?
- Repair tips include checking and repairing any damaged wiring, replacing a faulty ignition switch, ensuring the battery is in good condition, and clearing the code with an OBDII scanner.
6. Is it safe to continue driving with OBDII code B1370 GMC present?
- It is not recommended to continue driving with the code present, as it can lead to starting issues and potential safety hazards. It is best to address the issue promptly.
7. Can a DIY enthusiast fix OBDII code B1370 GMC?
- Depending on the underlying cause, some DIY enthusiasts may be able to fix the issue by following repair guides and using the necessary tools. However, if in doubt, it's advisable to seek professional help.
8. How much does it typically cost to repair OBDII code B1370 GMC?
- The cost of repair can vary depending on the exact cause of the code and whether you choose to DIY or seek professional assistance. It's best to get a few quotes from mechanics in your area.
9. Will disconnecting the battery reset OBDII code B1370 GMC?
- Disconnecting the battery may reset the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause.
10. Can extreme weather conditions contribute to OBDII code B1370 GMC triggering?
- Yes, extreme weather conditions can sometimes affect the electrical components involved in the control module ignition ON and start circuit, potentially leading to the code being triggered.
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