B319A 2018 GMC Sierra Code - Right Rear Window Switch
Quick Answer
The driver and passenger window motors supply 12 V signal circuits to their respective window switches, when a window switch has been activated, a switch closes providing a ground to the appropriate signal circuit causing the voltage to drop to 0 V. Common causes include Faulty Right Rear Window Switch, Right Rear Window Switch harness is open or shorted, Right Rear Window 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
- B319A 2018 GMC Sierra indicates Right Rear Window Switch.
- Common causes
- Common causes include Faulty Right Rear Window Switch, Right Rear Window Switch harness is open or shorted, Right Rear Window 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 B319A 2018 GMC Sierra Description
The driver window master control switch also contains control switches for the passenger, left rear and right rear window functions. When a window switch is pressed, a serial data message is sent to the Body Control Module (BCM). The BCM examines the request and checks for messages from other power window motors that may prohibit window movement. If no prohibitive messages have been received, the BCM will send a serial data message to the passenger window motor or to the appropriate rear window switch which will perform the command as requested.
What are the Possible Causes of the DTC B319A 2018 GMC Sierra?
- Faulty Right Rear Window Switch
- Right Rear Window Switch harness is open or shorted
- Right Rear Window Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B319A 2018 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 B319A 2018 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 B319A 2018 GMC Sierra Code
1. What does the OBDII code B319A for the 2018 GMC Sierra indicate?
- The code B319A specifically relates to a fault with the Right Rear Window Switch in the vehicle.
2. What are some common symptoms of a B319A code in a 2018 GMC Sierra?
- Common symptoms include the right rear window being unresponsive to the switch command, or the window getting stuck in either the up or down position.
3. What are some possible causes of the B319A code in a 2018 GMC Sierra?
- The code may be triggered by a faulty right rear window switch, wiring issues, or a malfunction in the window motor or regulator.
4. How can I diagnose the issue causing the B319A code in my 2018 GMC Sierra?
- To diagnose the problem, you can start by checking the wiring connections, testing the right rear window switch for continuity, and inspecting the window motor and regulator for any signs of damage.
5. Can I repair the B319A code issue in my 2018 GMC Sierra myself?
- Depending on your level of automotive expertise, you may be able to repair the issue yourself by replacing the faulty right rear window switch, fixing any wiring problems, or repairing/replacing the window motor or regulator.
6. Is it recommended to reset the OBDII code B319A after making repairs on a 2018 GMC Sierra?
- Yes, it is recommended to reset the code after completing repairs to see if the issue has been successfully resolved and to clear the fault code from the vehicle's system.
7. What are some tips for preventing the B319A code issue from occurring in a 2018 GMC Sierra?
- Regularly inspecting and maintaining the window switches, wiring, and window components can help prevent issues that may trigger the B319A code.
8. How can a professional mechanic help diagnose and repair the B319A code in a 2018 GMC Sierra?
- A professional mechanic can use specialized diagnostic tools to pinpoint the exact cause of the B319A code and can efficiently repair or replace the necessary components to resolve the issue.
9. Are there any recalls or technical service bulletins related to the B319A code in the 2018 GMC Sierra?
- It's recommended to check with your local GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or technical service bulletins related to the B319A code in your specific vehicle.
10. Can the B319A code affect other electrical components in the 2018 GMC Sierra?
- While the B319A code specifically relates to the Right Rear Window Switch, electrical issues in one part of the vehicle can sometimes have secondary effects on other components, so it's essential to address the problem promptly.
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