B1370 2018 GMC Sierra Code - Control Module Ignition ON and Start Circuit
Quick Answer
The B1370 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Ignition ON and Start Circuit. Common causes include Faulty ignition switch, Wiring issues or shorts in the ignition circuit, Defective 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 2018 GMC Sierra indicates Control Module Ignition ON and Start Circuit.
- Common causes
- Common causes include Faulty ignition switch, Wiring issues or shorts in the ignition circuit, Defective 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 2018 GMC Sierra Description
The B1370 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Ignition ON and Start Circuit. This code indicates a problem with the control module's ability to receive the necessary signals to turn on the ignition and start the vehicle. The control module plays a crucial role in managing various functions within the vehicle, including starting the engine.
Common Causes of B1370 2018 GMC Sierra
- Faulty ignition switch.
- Wiring issues or shorts in the ignition circuit.
- Defective control module.
- Poor connections or corrosion in the wiring harness.
- Communication errors between control module and other components.
Symptoms of B1370 2018 GMC Sierra
- Engine cranks but does not start.
- Intermittent starting issues.
- Engine stalls shortly after starting.
- Check Engine Light illuminated.
- Loss of communication with the control module.
How to Fix B1370 2018 GMC Sierra
- Perform a thorough diagnostic scan to retrieve the B1370 code and any related codes.
- Inspect the ignition switch for proper operation and replace if necessary.
- Check the wiring harness for any damage, shorts, or corrosion, and repair as needed.
- Test the control module for faults and replace if found to be defective.
- Clear the DTCs from the vehicle's memory and perform a test start to ensure the issue is resolved.
Cost to Fix B1370 2018 GMC Sierra
The typical repair costs for addressing the B1370 code in a 2018 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall repair costs. For a more accurate estimate, it's recommended to consult with a local auto repair shop.
Tech Notes for B1370 2018 GMC Sierra
B1370:04 Control Module Ignition ON and Start Circuit Short to Ground or Open
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Frequently Asked Questions about B1370 2018 GMC Sierra Code
1. What does OBDII code B1370 for a 2018 GMC Sierra mean?
- The B1370 code 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 2018 GMC Sierra?
- Common symptoms include difficulty starting the vehicle, intermittent starting issues, and possible stalling.
3. What are the possible causes of OBDII code B1370 in a 2018 GMC Sierra?
- The code B1370 can be triggered by a faulty ignition switch, a malfunctioning control module, damaged wiring, or a poor connection in the ignition circuit.
4. How can I diagnose the cause of OBDII code B1370 in my 2018 GMC Sierra?
- To diagnose the issue, you may need to check the ignition switch, inspect the control module, test the wiring for continuity, and ensure all connections are secure.
5. What are some repair tips for addressing OBDII code B1370 in a 2018 GMC Sierra?
- Repair tips include replacing a faulty ignition switch, repairing or replacing the control module, repairing damaged wiring, and ensuring all connections are clean and tight.
6. Can I drive my 2018 GMC Sierra with OBDII code B1370?
- It is not recommended to drive the vehicle with an active B1370 code, as it can lead to potential starting or stalling issues while on the road.
7. Is it safe to ignore OBDII code B1370 in a 2018 GMC Sierra?
- Ignoring the B1370 code can lead to more severe starting problems or the risk of the vehicle stalling unexpectedly, so it is best to address the issue promptly.
8. Will resetting the OBDII code B1370 in my 2018 GMC Sierra make it go away permanently?
- Resetting the code may temporarily clear the warning, but if the underlying issue causing the B1370 code is not addressed, it is likely to reappear.
9. How much does it typically cost to repair OBDII code B1370 in a 2018 GMC Sierra?
- The cost of repairing the B1370 code can vary depending on the specific cause, but it may involve parts and labor expenses ranging from $100 to $500 or more.
10. Can a DIY enthusiast fix OBDII code B1370 in a 2018 GMC Sierra?
- Depending on the root cause of the B1370 code, some DIY enthusiasts with automotive repair experience may be able to address the issue, but complex repairs may require professional assistance.
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