B3794:08 2017 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The B3794:08 diagnostic trouble code (DTC) for a 2017 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 necessary input to engage or maintain a set speed, Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the flow of electrical signals, leading to a malfunction, Defective cruise control module: A faulty cruise control module can fail to interpret the signals from the switches and sensors correctly, resulting in the system not functioning as intended. 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
- B3794:08 2017 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 necessary input to engage or maintain a set speed, Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the flow of electrical signals, leading to a malfunction, Defective cruise control module: A faulty cruise control module can fail to interpret the signals from the switches and sensors correctly, resulting in the system not functioning as intended.
- 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 B3794:08 2017 GMC Sierra Description
The B3794:08 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Cruise Control Function Request Circuit. This code indicates that there is an issue with the circuit responsible for sending signals to the cruise control system, which allows the driver to set and maintain a desired speed without the need to constantly apply pressure to the accelerator pedal.
Common Causes of B3794:08 2017 GMC Sierra
- Faulty cruise control switch: A malfunctioning cruise control switch can prevent the system from receiving the necessary input to engage or maintain a set speed.
- Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the flow of electrical signals, leading to a malfunction.
- Defective cruise control module: A faulty cruise control module can fail to interpret the signals from the switches and sensors correctly, resulting in the system not functioning as intended.
- Sensor malfunction: Issues with the speed sensor or other related sensors can cause inaccuracies in speed readings, affecting the cruise control system's performance.
Symptoms of B3794:08 2017 GMC Sierra
- Inability to engage cruise control: The most obvious symptom of this code is the inability to engage the cruise control system when attempting to set a desired speed.
- Cruise control disengaging unexpectedly: The cruise control may disengage suddenly while driving, even if it was previously engaged and functioning correctly.
- Inconsistent speed maintenance: The vehicle may struggle to maintain a consistent speed when the cruise control is activated, leading to fluctuations in speed.
- Dashboard warning light: The activation of the check engine light or a specific cruise control warning light on the dashboard can indicate a problem with the cruise control function request circuit.
How to Fix B3794:08 2017 GMC Sierra
- Diagnostic scan: Begin by using a diagnostic scanner to retrieve the specific DTC (B3794:08) and pinpoint the exact cause of the issue within the cruise control function request circuit.
- Check cruise control components: Inspect the cruise control switch, wiring, control module, and sensors for any visible damage or signs of malfunction.
- Repair or replace faulty components: Depending on the findings, repair or replace any faulty components such as switches, wiring, modules, or sensors to restore proper functionality to the cruise control system.
- Clear DTC and test drive: After the repair, clear the DTC from the vehicle's computer memory and test drive the vehicle to ensure that the cruise control system is now operating correctly.
- Final inspection: Perform a final inspection to verify that the cruise control system is engaging, maintaining speed accurately, and not disengaging unexpectedly.
Cost to Fix B3794:08 2017 GMC Sierra
The typical repair costs for addressing the B3794:08 Cruise Control Function Request Circuit code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for replacing components such as switches, wiring, modules, or sensors can range from $100 to $500 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair bill can amount to $200 to $800 or higher, including parts and labor.
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Frequently Asked Questions about B3794:08 2017 GMC Sierra Code
1. What does OBDII code B3794:08 on a 2017 GMC Sierra refer to?
The code B3794:08 signifies a Cruise Control Function Request Circuit issue in the vehicle.
2. What are some common symptoms of a Cruise Control Function Request Circuit problem in a 2017 GMC Sierra?
Common symptoms may include the cruise control system not engaging or maintaining speed, illuminated warning lights on the dashboard, and potential loss of cruise control functionality.
3. What could cause the Cruise Control Function Request Circuit trouble code to trigger on a 2017 GMC Sierra?
Possible causes may include a faulty cruise control switch, damaged wiring or connectors in the cruise control system, or a malfunctioning cruise control module.
4. How can I diagnose the Cruise Control Function Request Circuit issue on my 2017 GMC Sierra?
Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, visually inspecting the cruise control components for visible damage, and testing the cruise control system's electrical connections.
5. Is it safe to continue driving my 2017 GMC Sierra with the B3794:08 code related to the Cruise Control Function Request Circuit?
It is generally safe to drive the vehicle, but it is recommended to address the issue promptly to avoid potential inconvenience of a malfunctioning cruise control system.
6. Can I repair the Cruise Control Function Request Circuit problem in my 2017 GMC Sierra myself?
Depending on your automotive repair skills, you may be able to repair the issue yourself by replacing faulty components like the cruise control switch or repairing damaged wiring. However, professional assistance may be necessary for more complex repairs.
7. How much does it typically cost to fix the Cruise Control Function Request Circuit issue on a 2017 GMC Sierra?
The cost of repairs can vary depending on the exact cause of the problem and whether you choose to address it yourself or take the vehicle to a professional mechanic. Costs may range from a few hundred to a thousand dollars.
8. Are there any preventive maintenance tips to avoid the Cruise Control Function Request Circuit problem in a 2017 GMC Sierra?
Regularly inspecting the cruise control system components for wear and tear, promptly addressing any issues with the cruise control functionality, and ensuring proper maintenance of the vehicle's electrical system can help prevent such problems.
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