B3794 2016 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The B3794 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Cruise Control Function Request Circuit. Common causes include Damaged or corroded wiring in the cruise control circuit, Malfunctioning cruise control switches on the steering wheel, Defective cruise 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
- B3794 2016 GMC Sierra indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Damaged or corroded wiring in the cruise control circuit, Malfunctioning cruise control switches on the steering wheel, Defective cruise 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 B3794 2016 GMC Sierra Description
The B3794 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for receiving cruise control commands from the driver and transmitting them to the vehicle's control module. The cruise control system allows the driver to set a desired speed for the vehicle to maintain automatically, providing convenience and reducing driver fatigue on long trips.
Common Causes of B3794 2016 GMC Sierra
- Damaged or corroded wiring in the cruise control circuit.
- Malfunctioning cruise control switches on the steering wheel.
- Defective cruise control module.
- Faulty electronic control unit (ECU).
- Loose connections in the cruise control system.
Symptoms of B3794 2016 GMC Sierra
- Inability to set or maintain a constant speed using the cruise control system.
- Cruise control system engages intermittently or unpredictably.
- Illumination of the cruise control warning light on the dashboard.
- Loss of cruise control functionality while driving.
How to Fix B3794 2016 GMC Sierra
- Begin by conducting a thorough visual inspection of the cruise control circuit wiring to check for any signs of damage or corrosion. Repair or replace any damaged wiring as needed.
- Test the cruise control switches on the steering wheel to ensure they are functioning correctly. Replace any faulty switches.
- Check the cruise control module for any signs of damage or malfunction. Replace the module if necessary.
- Use a diagnostic scanner to check for any fault codes stored in the ECU related to the cruise control system. Address any underlying issues indicated by the codes.
- Once repairs are completed, clear the DTC from the vehicle's memory using the diagnostic scanner to reset the cruise control system.
Cost to Fix B3794 2016 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 labor rates at the auto repair shop. In general, the repair costs for this type of issue typically range from $150 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates can vary based on factors such as location, vehicle make and model, and the expertise of the technician. It's advisable to contact local auto repair shops for a more accurate estimate based on your specific circumstances.
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Frequently Asked Questions about B3794 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code B3794 in a 2016 GMC Sierra related to the Cruise Control Function Request Circuit?
- The common symptoms include non-functioning cruise control, illuminated check engine light, and potential issues with vehicle speed control.
2. What are the possible causes of OBDII code B3794 in a 2016 GMC Sierra?
- The possible causes may include a faulty cruise control switch, damaged wiring or connectors in the cruise control system, or a malfunctioning cruise control module.
3. How can I diagnose the Cruise Control Function Request Circuit issue in my 2016 GMC Sierra?
- Diagnosis typically involves using an OBDII scanner to retrieve the specific code, inspecting the cruise control system components for any visible damage, and testing the cruise control switch and module for proper functionality.
4. Can I continue driving my 2016 GMC Sierra with OBDII code B3794 related to the Cruise Control Function Request Circuit?
- While the vehicle should still be safe to drive, it is recommended to address the issue promptly to ensure proper cruise control functionality and to prevent any potential impact on vehicle speed control.
5. What is the typical repair process for resolving OBDII code B3794 in a 2016 GMC Sierra?
- The repair process usually involves repairing or replacing any damaged wiring or connectors in the cruise control system, testing and potentially replacing the cruise control switch, and resetting the fault code with an OBDII scanner.
6. Can a DIY enthusiast fix OBDII code B3794 related to the Cruise Control Function Request Circuit in a 2016 GMC Sierra?
- Depending on the individual's skill level and familiarity with automotive electrical systems, some DIY enthusiasts may be able to diagnose and repair the issue themselves. However, it is recommended to seek professional help if unsure.
7. How much does it typically cost to repair OBDII code B3794 in a 2016 GMC Sierra at a dealership or auto repair shop?
- The cost of repair can vary based on the specific diagnosis and parts needed, but it may range from $100 to $300 for labor and parts at a dealership or auto repair shop.
8. Are there any preventive measures to avoid encountering OBDII code B3794 related to the Cruise Control Function Request Circuit in a 2016 GMC Sierra?
- Regularly inspecting the cruise control system for any signs of wear or damage, avoiding harsh handling of the cruise control switch, and promptly addressing any cruise control issues can help prevent this code from occurring.
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