AutoCodes – GMC – B3794:08 2016 GMC Sierra

B3794:08 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: B3794:08 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 187

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 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 an invalid voltage signal on the cruise control switch signal circuit for 1 second.

OBDII Code B3794:08 2016 GMC Sierra - Cruise Control Function Request Circuit - AutoCodes.com — B3794:08 2016 GMC Sierra Code - Cruise Control Function Request Circuit

What does this mean?

What are the Possible Causes of the DTC B3794:08 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 B3794:08 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 B3794:08 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 B3794:08 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 B3794:08 2016 GMC Sierra Code

1. What does OBDII code B3794:08 on a 2016 GMC Sierra mean?

This code refers to a Cruise Control Function Request Circuit issue.

2. What are the common symptoms of OBDII code B3794:08 in a 2016 GMC Sierra?

Common symptoms include the cruise control system not engaging or functioning properly.

3. What are the possible causes of OBDII code B3794:08 in a 2016 GMC Sierra?

Potential causes may include a faulty cruise control switch, damaged wiring, or a malfunctioning cruise control module.

4. How can I diagnose the Cruise Control Function Request Circuit issue in my 2016 GMC Sierra?

Diagnosis involves checking the cruise control system components, inspecting wiring for damage, and using a scan tool to retrieve the specific error code.

5. Can I still drive my 2016 GMC Sierra with OBDII code B3794:08 present?

It is generally safe to drive the vehicle with this code, but the cruise control function may not work until the issue is resolved.

6. How can I repair OBDII code B3794:08 on my 2016 GMC Sierra?

Repair options include replacing a faulty cruise control switch, repairing damaged wiring, or replacing the cruise control module if necessary.

7. Is it possible to reset OBDII code B3794:08 on a 2016 GMC Sierra without fixing the issue?

Clearing the code without addressing the underlying problem may result in the code reappearing once the system is activated again.

8. Can a DIY enthusiast fix the Cruise Control Function Request Circuit problem in a 2016 GMC Sierra?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this issue themselves.

9. How much does it typically cost to repair OBDII code B3794:08 on a 2016 GMC Sierra?

Costs can vary based on the specific cause of the issue and labor rates, but replacing a cruise control switch or repairing wiring may be relatively affordable.

10. Will fixing OBDII code B3794:08 on my 2016 GMC Sierra improve fuel efficiency or performance?

Resolving this specific code is unlikely to have a direct impact on fuel efficiency or performance, as it primarily relates to the cruise control system functionality.