AutoCodes – GMC – B3794:61 2018 GMC Sierra

B3794:61 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: B3794:61 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.

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Code Popularity 137

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 B3794:61 2018 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 a stuck switch for either Resume/Accel or Set/Coast button for 60 seconds.

OBDII Code B3794:61 2018 GMC Sierra - Cruise Control Function Request Circuit - AutoCodes.com — B3794:61 2018 GMC Sierra Code - Cruise Control Function Request Circuit

What does this mean?

What are the Possible Causes of the DTC B3794:61 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 B3794:61 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 B3794:61 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.

Need more information about the B3794:61 2018 GMC Sierra code?

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Need Help with the 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 B3794:61 2018 GMC Sierra Code

What does the OBDII code B3794:61 mean for a 2018 GMC Sierra?

It indicates an issue with the Cruise Control Function Request Circuit, specifically an invalid signal has been detected.

What are the common symptoms of code B3794:61 in a 2018 GMC Sierra?

Symptoms may include cruise control not engaging, cruise control disengaging unexpectedly, or the cruise control system being completely non-functional.

What causes the B3794:61 code to appear in a 2018 GMC Sierra?

Common causes include a malfunctioning cruise control switch, damaged wiring or connectors in the circuit, or issues with the body control module (BCM).

Can a faulty cruise control switch trigger code B3794:61?

Yes, a faulty cruise control switch can send invalid signals, which may trigger this code.

How can you diagnose code B3794:61 in a 2018 GMC Sierra?

Start by visually inspecting the cruise control switch, wiring, and connectors. Use a diagnostic scan tool to check for related codes and monitor live data from the cruise control system.

Can code B3794:61 impact other vehicle systems?

This code typically affects only the cruise control system, but in rare cases, it may interact with other systems controlled by the BCM.

Is it safe to drive a 2018 GMC Sierra with code B3794:61?

Yes, the vehicle is generally safe to drive, but you wonâ€™t be able to use the cruise control feature until the issue is resolved.

How do you fix code B3794:61 in a 2018 GMC Sierra?

Repairs may involve replacing the cruise control switch, repairing damaged wiring, or reprogramming/replacing the body control module.

Can a software update resolve the B3794:61 code?

In some cases, a software update for the BCM may resolve the issue if itâ€™s related to a programming error.

Do you need a professional to fix code B3794:61?

While some fixes like inspecting wiring can be done at home, diagnosing and repairing BCM-related issues typically require professional equipment and expertise.