B3794 2015 Chevrolet Silverado Code - Cruise Control Function Request Circuit
Quick Answer
The B3794 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the Cruise Control Function Request Circuit. Common causes include Faulty cruise control switch: A malfunctioning cruise control switch on the steering wheel can prevent the signals from reaching the ECM, Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the signal transmission between components, Defective cruise control module: A faulty cruise control module can cause communication errors within the cruise control system. 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 2015 Chevrolet Silverado indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty cruise control switch: A malfunctioning cruise control switch on the steering wheel can prevent the signals from reaching the ECM, Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the signal transmission between components, Defective cruise control module: A faulty cruise control module can cause communication errors within the cruise control system.
- 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 B3794 2015 Chevrolet Silverado Description
The B3794 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for sending signals to the cruise control system, preventing it from functioning properly. The cruise control system allows the driver to set and maintain a desired speed without having to constantly press the accelerator pedal. When this circuit fails, the cruise control feature may become inoperative, leading to inconvenience for the driver.
Common Causes of B3794 2015 Chevrolet Silverado
- Faulty cruise control switch: A malfunctioning cruise control switch on the steering wheel can prevent the signals from reaching the ECM.
- Wiring issues: Damaged or corroded wiring in the cruise control circuit can disrupt the signal transmission between components.
- Defective cruise control module: A faulty cruise control module can cause communication errors within the cruise control system.
- ECM malfunction: A problem with the engine control module (ECM) can prevent it from receiving or interpreting signals from the cruise control circuit.
- Poor electrical connections: Loose or poor electrical connections in the cruise control circuit can lead to intermittent signal transmission issues.
Symptoms of B3794 2015 Chevrolet Silverado
- Inoperative cruise control system: The most obvious symptom of the B3794 code is the inability to engage or maintain the set speed using the cruise control feature.
- Illuminated warning light: The check engine light or cruise control light on the instrument cluster may illuminate to indicate a problem with the cruise control system.
- Erratic cruise control behavior: The cruise control system may engage intermittently or fail to maintain the set speed consistently.
- Loss of throttle response: In some cases, the vehicle may experience a lack of response from the throttle when attempting to use the cruise control feature.
How to Fix B3794 2015 Chevrolet Silverado
- Diagnose the issue: Use a diagnostic scanner to retrieve the B3794 code and perform a thorough inspection of the cruise control circuit components.
- Check cruise control switch: Test the cruise control switch on the steering wheel to ensure it is functioning correctly.
- Inspect wiring: Check the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring.
- Test cruise control module: Verify the functionality of the cruise control module and replace it if necessary.
- Reset ECM: Clear the DTC from the ECM and reset the system to see if the issue persists. If the problem continues, further diagnosis may be required.
Cost to Fix B3794 2015 Chevrolet Silverado
The cost of repairing the Cruise Control Function Request Circuit issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to ensure you get the best deal. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive prices.
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Frequently Asked Questions about B3794 2015 Chevrolet Silverado Code
1. What does the OBDII code B3794 mean for a 2015 Chevrolet Silverado?
The code B3794 indicates an issue with the Cruise Control Function Request Circuit, which affects the communication or operation of the cruise control system.
2. What are common symptoms of the B3794 code?
Symptoms include the cruise control not engaging, the cruise control system being unresponsive, or a warning light on the dashboard.
3. What causes the B3794 code in a 2015 Chevrolet Silverado?
Common causes include a faulty cruise control switch, damaged wiring or connectors in the circuit, or a malfunctioning body control module (BCM).
4. How is the B3794 code diagnosed?
A technician will use a scan tool to retrieve the code, inspect the cruise control switch, check the wiring and connectors for damage, and test the BCM for proper operation.
5. Can a faulty cruise control switch cause the B3794 code?
Yes, a failing or stuck cruise control switch can trigger this code due to improper circuit communication.
6. Is the B3794 code serious?
While it does not usually affect engine performance, it disables the cruise control system, which can be inconvenient for highway driving.
7. How can the B3794 code be fixed?
Repairs may include replacing the cruise control switch, repairing or replacing damaged wiring, or reprogramming or replacing the BCM if necessary.
8. Can I still drive my Silverado with the B3794 code?
Yes, you can drive the truck, but the cruise control system will not function until the issue is resolved.
9. What tools are needed to fix the B3794 code?
A diagnostic scan tool, a multimeter for testing electrical connections, and basic hand tools for replacing components are typically required.
10. How much does it cost to repair the B3794 code on a 2015 Silverado?
Repair costs vary depending on the cause but may range from $50 for minor wiring repairs to $500 or more if the BCM needs replacement.
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