AutoCodes – GMC – B3794:08 2014 GMC Sierra

B3794:08 2014 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: B3794:08 2014 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.

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Code Popularity 195

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3794:08 2014 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 Diagnostic Trouble Code (DTC) will be set when the BCM detects an invalid voltage signal on the cruise control switch signal circuit for 1 second.

OBDII Code B3794:08 2014 GMC Sierra - Cruise Control Function Request Circuit - AutoCodes.com — B3794:08 2014 GMC Sierra Code - Cruise Control Function Request Circuit

What does this mean?

What are the Possible Causes of the DTC B3794:08 2014 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 B3794:08 2014 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 B3794:08 2014 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 B3794:08 2014 GMC Sierra code?

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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 B3794:08 2014 GMC Sierra Code

What are the common symptoms of OBDII code B3794:08 in a 2014 GMC Sierra?

Common symptoms include a non-functional cruise control system, an illuminated cruise control warning light on the dashboard, and potential issues with other vehicle functions related to the cruise control system.

What are the possible causes of OBDII code B3794:08 in a 2014 GMC Sierra?

Possible causes may include a faulty cruise control switch, damaged wiring or connectors in the cruise control circuit, a malfunctioning cruise control module, or a problem with the vehicle's ECM (Engine Control Module).

How can I diagnose the Cruise Control Function Request Circuit issue in my 2014 GMC Sierra?

Diagnosing the issue involves using an OBDII scanner to retrieve the specific trouble code, inspecting the cruise control components for visible damage, testing the cruise control switch functionality, and checking the wiring and connectors for any signs of wear or corrosion.

What are some tips for repairing OBDII code B3794:08 in a 2014 GMC Sierra?

Repair tips may include replacing a faulty cruise control switch, repairing or replacing damaged wiring or connectors, testing and possibly replacing the cruise control module, and ensuring proper communication between the cruise control system and the ECM.

Is it safe to continue driving with OBDII code B3794:08 present in a 2014 GMC Sierra?

It is generally safe to continue driving with this code, as it primarily affects the functionality of the cruise control system and does not pose an immediate safety risk. However, it is recommended to address the issue promptly to ensure the proper operation of the cruise control feature.

How can I reset OBDII code B3794:08 in my 2014 GMC Sierra?

Resetting the code can be done using an OBDII scanner by clearing the error code from the vehicle's ECM. However, it is crucial to diagnose and repair the underlying issue before resetting the code to prevent it from reoccurring.

Can weather conditions affect the Cruise Control Function Request Circuit in a 2014 GMC Sierra?

Extreme weather conditions, such as heavy rain or snow, can potentially affect the cruise control system by causing water damage to the components or creating electrical connectivity issues. It is essential to keep the cruise control components dry and well-maintained.

Should I attempt to repair OBDII code B3794:08 in a 2014 GMC Sierra myself, or should I seek professional help?

If you have experience working on automotive electrical systems and feel confident in diagnosing and repairing the issue, you may attempt to fix the problem yourself. However, if you are unsure or lack the necessary tools and expertise, it is recommended to seek professional help to avoid causing further damage to the vehicle.