B3794 2014 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The B3794 diagnostic trouble code (DTC) for the 2014 GMC Sierra relates to the Cruise Control Function Request Circuit. Common causes include Faulty cruise control switch: A malfunctioning cruise control switch can prevent the system from receiving the driver's commands, Damaged wiring or connectors: Any damage to the wiring or connectors in the cruise control circuit can disrupt the communication between components, Defective cruise control module: A faulty cruise control module may not be able to process the signals from the switch correctly. 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
- B3794 2014 GMC Sierra indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty cruise control switch: A malfunctioning cruise control switch can prevent the system from receiving the driver's commands, Damaged wiring or connectors: Any damage to the wiring or connectors in the cruise control circuit can disrupt the communication between components, Defective cruise control module: A faulty cruise control module may not be able to process the signals from the switch correctly.
- 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 B3794 2014 GMC Sierra Description
The B3794 diagnostic trouble code (DTC) for the 2014 GMC Sierra relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for communicating the driver's cruise control commands to the vehicle's control module. The cruise control system allows the driver to set and maintain a desired speed without needing to continuously press the accelerator pedal. When this circuit malfunctions, it can lead to the cruise control system not responding to the driver's commands, resulting in the inability to set or maintain a speed.
Common Causes of B3794 2014 GMC Sierra
- Faulty cruise control switch: A malfunctioning cruise control switch can prevent the system from receiving the driver's commands.
- Damaged wiring or connectors: Any damage to the wiring or connectors in the cruise control circuit can disrupt the communication between components.
- Defective cruise control module: A faulty cruise control module may not be able to process the signals from the switch correctly.
- Software issues: Sometimes, the problem may be related to software glitches in the control module that prevent it from functioning properly.
Symptoms of B3794 2014 GMC Sierra
- Cruise control not engaging: The most obvious symptom of this code is that the cruise control system will not engage when the driver attempts to set a speed.
- Inability to maintain speed: If the cruise control does engage but fails to maintain the set speed, this could be another symptom of the issue.
- Illuminated warning light: The vehicle may display a warning light on the dashboard related to the cruise control system.
- Erratic speed control: The vehicle may experience erratic speed control while the cruise control is engaged, potentially leading to unsafe driving conditions.
How to Fix B3794 2014 GMC Sierra
- Diagnose the issue: Use a diagnostic scanner to retrieve the specific trouble code and pinpoint the exact cause of the malfunction.
- Inspect wiring and connectors: Check the cruise control circuit for any visible damage or corrosion that may be affecting the signal transmission.
- Test cruise control switch: Verify that the cruise control switch is functioning correctly by testing its continuity and signal output.
- Replace faulty components: Replace any damaged wiring, connectors, or defective components such as the cruise control switch or module as needed.
- Clear codes and test: After completing the repairs, clear the DTCs from the vehicle's computer and test the cruise control system to ensure it is functioning properly.
Cost to Fix B3794 2014 GMC Sierra
The cost of repairing the Cruise Control Function Request Circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the parts for this repair may range from $50 to $200, while the labor costs could be around $100 to $300. Keep in mind that these are rough estimates, and actual costs may differ based on various factors. It is recommended to consult with a professional mechanic or auto repair shop for a more accurate cost assessment.
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Frequently Asked Questions about B3794 2014 GMC Sierra Code
1. What does the OBDII code B3794 mean on a 2014 GMC Sierra?
The B3794 code indicates an issue with the Cruise Control Function Request Circuit, which can affect the communication or operation of the cruise control system.
2. What are common symptoms of the B3794 code in a 2014 GMC Sierra?
Symptoms may include the cruise control not engaging, inconsistent cruise control operation, or the cruise control light failing to illuminate.
3. What causes the B3794 code to appear?
Common causes include a faulty cruise control switch, damaged wiring or connections in the circuit, a malfunctioning clock spring, or a problem with the body control module (BCM).
4. Can I still drive my 2014 GMC Sierra with the B3794 code?
Yes, you can still drive the vehicle, but the cruise control system may not function properly, which could be inconvenient for highway driving.
5. How do I diagnose the B3794 code on my GMC Sierra?
Diagnosis involves checking the cruise control switch functionality, inspecting the wiring and connectors for damage, and using a scan tool to monitor the input signal from the cruise control circuit.
6. How can I fix the B3794 code on my 2014 GMC Sierra?
Repairs may include replacing a faulty cruise control switch, repairing damaged wiring, replacing the clock spring, or reprogramming or replacing the BCM if necessary.
7. Can a bad clock spring cause the B3794 code?
Yes, a damaged clock spring can disrupt the cruise control circuit, leading to the B3794 code.
8. How much does it cost to repair the B3794 code on a GMC Sierra?
Repair costs can vary widely, ranging from $100 to $500 or more, depending on whether the issue is a simple wiring repair or requires replacement of components like the switch or BCM.
9. Will clearing the B3794 code with a scan tool fix the problem?
Clearing the code may temporarily remove it, but the underlying issue must be repaired to prevent the code from returning.
10. Can a faulty body control module (BCM) trigger the B3794 code?
Yes, a malfunctioning BCM can sometimes cause the B3794 code, as it plays a role in the cruise control system's operation.
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