AutoCodes – GMC – B3794 2016 GMC Sierra

B3794 2016 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 2016 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 164
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code B3794 2016 GMC Sierra Description

The Cruise Control Switch is an input to the Body Control Module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The Engine Control Module (ECM) receives the requested cruise control switch function from the BCM via a serial data message. The BCM monitors the cruise control switch. The BCM sets the OBDII code when the cruise control switch is not to factory specifications.
OBDII Code B3794 2016 GMC Sierra - Cruise Control Function Request Circuit - AutoCodes.com
B3794 2016 GMC Sierra Code - Cruise Control Function Request Circuit

What are the Possible Causes of the DTC B3794 2016 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 2016 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 2016 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.

Need more information about the B3794 2016 GMC Sierra code?

Need more information on how to fix the B3794 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3794 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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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