AutoCodes – GMC – B319A GMC

B319A GMC 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 GMC 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.

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Code Popularity 766

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 Jun 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B319A GMC Description

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. The window motor will detect the voltage drop in the signal circuit and will command the window to move in the desired direction.
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.

OBDII Code B319A GMC - Right Rear Window Switch - AutoCodes.com — B319A GMC Code - Right Rear Window Switch

What does this mean?

What are the Possible Causes of the DTC B319A GMC?

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 GMC?

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 GMC 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 B319A GMC code?

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Need Help with the Code?

Get the B319A GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B319A 2014 GMC Sierra — Right Rear Window Switch
B319A 2015 GMC Sierra — Right Rear Window Switch
B319A 2016 GMC Sierra — Right Rear Window Switch
B319A 2017 GMC Sierra — Right Rear Window Switch
B319A 2018 GMC Sierra — Right Rear Window Switch

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 B319A GMC Code

1. What are common symptoms of OBDII code B319A GMC related to the right rear window switch?

The common symptoms include the right rear window being unable to open or close, erratic behavior of the window, or complete loss of control.

2. What are the possible causes of OBDII code B319A GMC for the right rear window switch?

Possible causes include a faulty right rear window switch, damaged wiring or connections, a malfunctioning window motor, or a problem with the window regulator.

3. How can I diagnose the issue related to OBDII code B319A GMC for the right rear window switch?

You can diagnose the issue by checking the functionality of the right rear window switch, inspecting the wiring and connections for any damage, testing the window motor, and examining the window regulator for any issues.

4. Can a DIY enthusiast repair OBDII code B319A GMC for the right rear window switch?

Yes, depending on the specific cause, a DIY enthusiast may be able to repair the issue by replacing the right rear window switch, repairing damaged wiring, or replacing the window motor or regulator.

5. Is it necessary to reset the OBDII code B319A GMC after fixing the right rear window switch issue?

It is recommended to reset the code after fixing the right rear window switch issue to clear the error code from the system and ensure proper functioning of the window.

6. Are there any preventive measures to avoid OBDII code B319A GMC for the right rear window switch in the future?

Regularly checking the functionality of all window switches, maintaining the electrical system of the vehicle, and promptly addressing any window-related issues can help prevent OBDII code B319A GMC for the right rear window switch.

7. Can a malfunctioning right rear window switch cause safety concerns?

Yes, a malfunctioning right rear window switch can pose safety concerns, especially in emergency situations where quick access to the window is necessary for exiting the vehicle.

8. How long does it typically take to repair OBDII code B319A GMC for the right rear window switch?

The repair time can vary depending on the specific cause of the issue, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the problem.

9. Should I seek professional help for OBDII code B319A GMC related to the right rear window switch?

If you are unsure about diagnosing or repairing the issue, or if the problem persists after attempting DIY repairs, it is advisable to seek professional help from a qualified mechanic or automotive technician.

10. Can OBDII code B319A GMC affect other electrical components in the vehicle?

While the code specifically relates to the right rear window switch, electrical issues in one part of the vehicle can sometimes affect other components, so it's important to address the problem promptly to avoid potential issues with other systems.