B356A 2015 GMC Sierra Code - Vehicle Direction Warning Switch Circuit
Quick Answer
The lane departure warning system is controlled by the Active Safety Control Module. Common causes include Faulty Vehicle Direction Warning Switch, Vehicle Direction Warning Switch harness is open or shorted, Vehicle Direction Warning 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
- B356A 2015 GMC Sierra indicates Vehicle Direction Warning Switch Circuit.
- Common causes
- Common causes include Faulty Vehicle Direction Warning Switch, Vehicle Direction Warning Switch harness is open or shorted, Vehicle Direction Warning 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.
Code B356A 2015 GMC Sierra Description
When the Frontview Camera module is operating and can detect the lane markings, the Frontview Camera module will request via serial data communications that the instrument panel cluster illuminate the green lane departure ready–to–assist indicator. If the Frontview Camera module detects that the vehicle has crossed a lane marking without the turn signal being used, the module will request that the instrument cluster flash the yellow lane departure warning indicator. An audible warning may also sound three times, or the haptic seat (if equipped) may pulse when the yellow Instrument Cluster indicator is flashing. The driver can select between audible or haptic alerts in the vehicle personalization menu. The Diagnostic Trouble Code (DTC) will be set when the Active Safety Control Module has detected a short to ground, short to voltage, or an open/high resistance for more than 10 s.
What are the Possible Causes of the DTC B356A 2015 GMC Sierra?
- Faulty Vehicle Direction Warning Switch
- Vehicle Direction Warning Switch harness is open or shorted
- Vehicle Direction Warning Switch circuit poor electrical connection
- Faulty Frontview Camera Module
- Faulty Active Safety Control Module
How to Fix the DTC B356A 2015 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 B356A 2015 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.
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Frequently Asked Questions about B356A 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code B356A in a 2015 GMC Sierra?
- Common symptoms include the vehicle direction warning switch not functioning properly, the warning light staying on, and potential loss of directional signal functionality.
2. What can cause the OBDII code B356A to appear in a 2015 GMC Sierra?
- The code B356A typically indicates a fault in the vehicle direction warning switch circuit, which can be caused by a malfunctioning switch, wiring issues, or a faulty control module.
3. How can I diagnose the issue related to OBDII code B356A in my 2015 GMC Sierra?
- To diagnose the problem, you can use a diagnostic scanner to retrieve the trouble codes, inspect the vehicle direction warning switch and circuitry for any visible damage, and perform electrical tests as needed.
4. Can I still drive my 2015 GMC Sierra with OBDII code B356A present?
- It is generally not recommended to drive the vehicle with unresolved OBDII code B356A, as it can affect the proper functioning of the vehicle's directional signals and compromise safety.
5. How can I repair the OBDII code B356A in my 2015 GMC Sierra?
- The repair process may involve replacing the faulty vehicle direction warning switch, repairing any damaged wiring or connectors, or reprogramming the control module to address the issue.
6. Is it possible to reset the OBDII code B356A in a 2015 GMC Sierra without fixing the underlying problem?
- While you can clear the trouble code with a diagnostic scanner, it is crucial to address the root cause of the issue to prevent the code from reoccurring and ensure proper vehicle functionality.
7. Are there any common DIY fixes for OBDII code B356A on a 2015 GMC Sierra?
- DIY fixes may include checking and tightening loose connections, cleaning corroded terminals, and inspecting the switch for debris or water damage before considering professional repair options.
8. Will OBDII code B356A in a 2015 GMC Sierra cause the vehicle to fail an emissions test?
- The code B356A is related to the vehicle direction warning switch circuit and may not directly impact emissions, but it is still essential to address the issue to maintain overall vehicle health and safety.
9. How long does it typically take to repair OBDII code B356A in a 2015 GMC Sierra?
- The repair time can vary depending on the specific cause of the issue, but it may take a few hours to a day for diagnosis, parts replacement, and testing to resolve the OBDII code B356A.
10. Can a mechanic help me fix OBDII code B356A in my 2015 GMC Sierra, or is it a job I can do myself?
- A qualified mechanic with experience in diagnosing and repairing electrical issues is recommended for addressing OBDII code B356A to ensure the problem is correctly identified and resolved.
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