B3794 2017 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The B3794 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Cruise Control Function Request Circuit. Common causes include Faulty cruise control switch, Damaged wiring in the cruise control circuit, Malfunctioning 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 2017 GMC Sierra indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty cruise control switch, Damaged wiring in the cruise control circuit, Malfunctioning 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 2017 GMC Sierra Description
The B3794 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for sending signals to the cruise control system. The cruise control system allows the driver to set a desired speed for the vehicle to maintain automatically, enhancing comfort and reducing driver fatigue on long journeys.
Common Causes of B3794 2017 GMC Sierra
- Faulty cruise control switch
- Damaged wiring in the cruise control circuit
- Malfunctioning cruise control module
- Issues with the vehicle's computer system
- Loose connections in the cruise control circuit
Symptoms of B3794 2017 GMC Sierra
- Inability to engage or set cruise control
- Cruise control engaging intermittently or unexpectedly
- Cruise control not maintaining set speed
- Illumination of the cruise control warning light on the dashboard
How to Fix B3794 2017 GMC Sierra
- Begin by conducting a thorough inspection of the cruise control system, including the cruise control switch, wiring, module, and connections.
- Use a multimeter to test the continuity of the wiring in the cruise control circuit to identify any damaged or broken wires.
- Check the cruise control switch for proper functionality and replace it if necessary.
- Inspect the cruise control module for any signs of damage or malfunction and replace it if needed.
- Clear the DTC from the vehicle's computer system using a diagnostic scanner after completing the repairs.
Cost to Fix B3794 2017 GMC Sierra
The typical repair costs for addressing the B3794 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a cruise control switch or module can range from $50 to $200, while labor costs at an auto repair shop may be between $100 and $300. It's important to note that diagnosis time and labor rates can vary based on location, vehicle make and model, and the expertise of the technician. It's advisable to check with local auto repair shops for a more accurate estimate.
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Frequently Asked Questions about B3794 2017 GMC Sierra Code
1. What does the OBDII code B3794 mean on a 2017 GMC Sierra?
The B3794 code indicates a malfunction in the cruise control function request circuit. This means there is an issue with the electrical circuit that sends signals from the cruise control switch to the engine control module.
2. What are common symptoms of code B3794 in a 2017 GMC Sierra?
Symptoms may include the cruise control not engaging or disengaging unexpectedly, the cruise control light flashing or not illuminating, and potentially an overall erratic cruise control operation.
3. What can cause the B3794 code to appear on a 2017 GMC Sierra?
Possible causes include a faulty cruise control switch, damaged wiring or connectors in the cruise control circuit, or a problem with the engine control module itself.
4. How is the B3794 code diagnosed in a 2017 GMC Sierra?
Diagnosis involves using a scan tool to read the fault code and examining the cruise control switch and its circuitry for signs of damage or malfunction. This may include visual inspection of wiring and connectors, and testing switch continuity with a multimeter.
5. What are the steps to fix the B3794 code in a 2017 GMC Sierra?
Repairing this code may involve replacing the faulty cruise control switch, repairing or replacing damaged wires or connectors in the cruise control circuit, or in some cases, reprogramming or replacing the engine control module.
6. Is it safe to drive a 2017 GMC Sierra with the B3794 code active?
While it is generally safe to drive, the cruise control may not function properly. If the cruise control is behaving erratically, it could pose a risk. It's advisable to get the system checked and repaired as soon as possible.
7. Will the B3794 code clear itself once the issue is fixed on a 2017 GMC Sierra?
Once the underlying issue is fixed, the code will need to be manually cleared using an OBDII scan tool. However, if all issues are thoroughly addressed, the code should not reappear.
8. How urgent is it to address the B3794 code in a 2017 GMC Sierra?
Although your vehicle can be driven, the malfunctioning cruise control can be inconvenient and potentially unsafe if it engages or disengages unexpectedly. It is moderately urgent to address this issue to ensure all features operate correctly and safely.
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