B356A 2017 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 2017 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 2017 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 2017 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 2017 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 2017 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 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code B356A in a 2017 GMC Sierra?
- Common symptoms include the vehicle direction warning switch not functioning properly, dashboard warning lights related to the switch circuit, and potential loss of directional signal functionality.
2. What can cause the OBDII code B356A in a 2017 GMC Sierra?
- The code may be triggered by issues such as a faulty vehicle direction warning switch, damaged wiring in the switch circuit, or a malfunctioning control module.
3. How can I diagnose the cause of OBDII code B356A in my 2017 GMC Sierra?
- Diagnose the issue by inspecting the vehicle direction warning switch for physical damage, checking the wiring for any signs of wear or disconnection, and using a diagnostic scanner to read the code and related data.
4. Is it safe to continue driving my 2017 GMC Sierra with OBDII code B356A present?
- It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the vehicle's directional signals, posing a safety risk on the road.
5. How can I repair OBDII code B356A in my 2017 GMC Sierra?
- Repair options include replacing the faulty vehicle direction warning switch, repairing any damaged wiring in the switch circuit, or reprogramming the control module if necessary.
6. Can a DIY enthusiast fix OBDII code B356A in a 2017 GMC Sierra?
- While some straightforward repairs like replacing the switch may be possible for DIY enthusiasts, diagnosing and fixing complex electrical issues should be left to experienced professionals.
7. Are there any recalls or technical service bulletins related to OBDII code B356A in a 2017 GMC Sierra?
- Check with your local GMC dealership or visit the manufacturer's website to inquire about any relevant recalls or technical service bulletins related to this specific OBDII code.
8. How much can I expect to pay for repairing OBDII code B356A in my 2017 GMC Sierra?
- Repair costs can vary depending on the exact cause of the issue, but you can expect to pay for parts and labor, with the total cost ranging from a few hundred to over a thousand dollars.
9. Will resetting the OBDII code B356A in a 2017 GMC Sierra make it go away permanently?
- Resetting the code may temporarily clear the warning lights, but if the underlying issue is not addressed and repaired, the code is likely to reappear once the problem resurfaces.
10. How long does it typically take to repair OBDII code B356A in a 2017 GMC Sierra?
- The repair time can vary depending on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved diagnostics and fixes could take a day or longer.
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