AutoCodes – GMC – B3794:61 2016 GMC Sierra

B3794:61 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: B3794:61 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.

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Code Popularity 159

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 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 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 2016 GMC Sierra - Cruise Control Function Request Circuit - AutoCodes.com — B3794:61 2016 GMC Sierra Code - Cruise Control Function Request Circuit

What does this mean?

What are the Possible Causes of the DTC B3794:61 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 B3794:61 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 B3794:61 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 B3794:61 2016 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 B3794:61 2016 GMC Sierra Code

1. What does OBDII code B3794:61 mean on a 2016 GMC Sierra?

Code B3794:61 indicates an issue with the Cruise Control Function Request Circuit, specifically showing "Signal Invalid."

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

Symptoms may include the cruise control not functioning, the cruise control light failing to illuminate, or intermittent operation of the cruise control system.

3. What causes code B3794:61 to appear in the GMC Sierra?

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

4. Can code B3794:61 affect other vehicle systems?

While primarily related to cruise control, it may affect other features that rely on the BCM if the underlying issue involves module communication.

5. How can I diagnose code B3794:61 in a GMC Sierra?

Start by inspecting the cruise control switch, wiring, and connectors for damage or loose connections. Use a scan tool to monitor live data and test the cruise control circuit.

6. What tools are needed to fix code B3794:61?

You may need a multimeter to check circuit continuity and a diagnostic scan tool to clear the code and verify repairs.

7. Is code B3794:61 a serious issue?

Itâ€™s not critical for vehicle operation but can be inconvenient if you rely on cruise control for long drives. Addressing the issue promptly is still recommended.

8. How much does it cost to repair code B3794:61?

Costs vary depending on the root cause. Diagnosing and repairing wiring or replacing the cruise control switch may cost $100-$300, while BCM replacement could be more expensive.

9. Can I drive my GMC Sierra with code B3794:61?

Yes, you can drive the vehicle, but the cruise control may not work. Ensure no other related codes affect critical systems.

10. Does clearing code B3794:61 fix the problem permanently?

Clearing the code may temporarily remove it, but if the underlying issue isnâ€™t resolved, the code will return. Proper diagnosis and repair are necessary.