B3794 2018 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The Cruise Control Switch is an input to the Body Control Module (BCM). Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch circuit poor electrical connection. 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 2018 GMC Sierra indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch circuit poor electrical connection.
- 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.
Code B3794 2018 GMC Sierra Description
What are the Possible Causes of the DTC B3794 2018 GMC Sierra?
- Faulty Cruise Control Switch
- Cruise Control Switch harness is open or shorted
- Cruise Control Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3794 2018 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3794 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about B3794 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code B3794 in a 2018 GMC Sierra related to the Cruise Control Function Request Circuit?
The common symptoms include the cruise control system not engaging or maintaining the set speed, and the cruise control indicator light may illuminate on the dashboard.
2. What are the potential causes of OBDII code B3794 in a 2018 GMC Sierra?
The code B3794 typically indicates a fault in the cruise control function request circuit. Possible causes include damaged wiring, a faulty cruise control switch, a malfunctioning cruise control module, or a problem with the vehicle's electronic control unit (ECU).
3. How can I diagnose the Cruise Control Function Request Circuit issue causing OBDII code B3794 in my 2018 GMC Sierra?
Diagnosing the issue involves checking the wiring connections, testing the cruise control switch, inspecting the cruise control module for proper operation, and utilizing a diagnostic scan tool to analyze the ECU's data related to the cruise control system.
4. Are there any DIY repair tips for resolving OBDII code B3794 related to the Cruise Control Function Request Circuit in a 2018 GMC Sierra?
DIY repair tips may include visually inspecting the wiring for any damage or loose connections, ensuring the cruise control switch is functioning correctly, and resetting the ECU to see if the code clears after addressing any identified issues.
5. Can a malfunctioning cruise control system affect the overall performance of a 2018 GMC Sierra?
While the cruise control system issue indicated by OBDII code B3794 may not directly impact the overall performance of the vehicle, it can lead to inconvenience and potential safety concerns if the cruise control fails to operate as intended.
6. Is it safe to continue driving my 2018 GMC Sierra with OBDII code B3794 related to the Cruise Control Function Request Circuit?
It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the cruise control system and avoid any potential safety hazards associated with its malfunction.
7. How much does it typically cost to repair OBDII code B3794 in a 2018 GMC Sierra's Cruise Control Function Request Circuit?
The repair cost can vary depending on the exact cause of the issue. Simple fixes such as repairing wiring may be relatively inexpensive, while replacing components like the cruise control module or ECU can be more costly.
8. Will resetting the ECU clear OBDII code B3794 in a 2018 GMC Sierra?
Resetting the ECU may clear the code temporarily, but if the underlying issue with the Cruise Control Function Request Circuit is not addressed, the code is likely to reappear upon subsequent system checks.
9. Can extreme weather conditions impact the Cruise Control Function Request Circuit in a 2018 GMC Sierra and trigger OBDII code B3794?
Extreme weather conditions can potentially affect electrical components and wiring, leading to issues with the cruise control system and triggering codes like B3794. It is essential to inspect and maintain these components for optimal performance.
10. Are there any recalls or technical service bulletins related to OBDII code B3794 in a 2018 GMC Sierra's Cruise Control Function Request Circuit?
It is recommended to check with the manufacturer or authorized service centers for any recalls or technical service bulletins specific to the cruise control system of the 2018 GMC Sierra related to code B3794.
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