B1370 2014 GMC Sierra Code - Control Module Ignition ON and Start Circuit
Quick Answer
The B1370 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Control Module Ignition ON and Start Circuit. 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 2014 GMC Sierra 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 2014 GMC Sierra Description
The B1370 diagnostic trouble code (DTC) for a 2014 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 initiate the ignition process and start the vehicle. The control module plays a crucial role in managing various functions within the vehicle, including starting the engine, so any issues with this circuit can have significant implications for the vehicle's performance.
Common Causes of B1370 2014 GMC Sierra
- Faulty ignition switch
- Damaged wiring or connectors in the ignition circuit
- Malfunctioning control module
- Issues with the ignition key or key fob
Symptoms of B1370 2014 GMC Sierra
- Difficulty starting the engine
- Engine stalling while driving
- Loss of power steering and braking assistance
- Illumination of the check engine light
How to Fix B1370 2014 GMC Sierra
- Begin by conducting a thorough inspection of the ignition system and control module to identify any visible damage or loose connections.
- Test the ignition switch and wiring using a multimeter to check for continuity and proper voltage levels.
- Replace any damaged wiring or connectors in the ignition circuit to ensure a secure connection.
- If the control module is found to be faulty, it may need to be replaced and reprogrammed to match the vehicle's specifications.
- Clear the DTC from the vehicle's computer system using a diagnostic scanner to reset the control module and allow for proper operation.
Cost to Fix B1370 2014 GMC Sierra
The typical repair costs for addressing the B1370 code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost of parts and labor for this repair can range from $200 to $500. It's important to note that the actual cost may be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the hourly labor rates charged. It's recommended to obtain quotes from multiple auto repair shops to compare prices and ensure a fair estimate for the repair.
Tech Notes for B1370 2014 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 2014 GMC Sierra Code
1. What does the OBDII code B1370 mean on a 2014 GMC Sierra?
The B1370 code indicates an issue with the Control Module Ignition ON and Start Circuit, typically related to a malfunction in the ignition circuit or wiring.
2. What are the common symptoms of the B1370 code in a 2014 GMC Sierra?
Symptoms can include the engine not starting, intermittent starting issues, or loss of power to certain electrical systems when the ignition is ON.
3. What causes the B1370 code to appear on a GMC Sierra?
Common causes include faulty ignition switch, damaged wiring or connectors in the ignition circuit, a failing control module, or poor electrical connections.
4. How do I diagnose the B1370 code on my 2014 GMC Sierra?
Start by inspecting the ignition switch, wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage in the ignition circuit and scan the vehicle with an OBDII scanner to confirm the fault.
5. Can a bad ignition switch trigger the B1370 code?
Yes, a faulty ignition switch is a common cause of the B1370 code, as it may fail to properly send signals to the control module.
6. Is the B1370 code serious for my 2014 GMC Sierra?
Yes, it can prevent the vehicle from starting or operating correctly. It should be addressed promptly to avoid being stranded.
7. Can I fix the B1370 code myself on a GMC Sierra?
If you're comfortable with basic electrical diagnostics, you can check and repair damaged wiring or replace the ignition switch. For more complex issues, consult a professional mechanic.
8. How much does it cost to fix the B1370 code on a 2014 GMC Sierra?
Repair costs vary, but replacing an ignition switch typically costs $150–$300, while wiring repairs depend on the extent of damage.
9. Can a dead battery cause the B1370 code to appear?
A weak or dead battery can cause voltage-related issues, potentially triggering the code. Ensure your battery is fully charged and in good condition.
10. Will clearing the B1370 code with a scanner fix the issue?
Clearing the code will temporarily erase it, but if the underlying problem isn’t resolved, the code will return. Proper diagnosis and repair are necessary.
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