AutoCodes – GMC – B316B GMC

B316B GMC Code - Driver 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 Driver Window Switch, Driver Window Switch harness is open or shorted, Driver 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: B316B GMC indicates Driver Window Switch.
Common causes: Common causes include Faulty Driver Window Switch, Driver Window Switch harness is open or shorted, Driver 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 2,097

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B316B 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 B316B GMC - Driver Window Switch - AutoCodes.com — B316B GMC Code - Driver Window Switch

What does this mean?

What are the Possible Causes of the DTC B316B GMC?

Faulty Driver Window Switch
Driver Window Switch harness is open or shorted
Driver Window Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B316B 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B316B 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 B316B GMC code?

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Need Help with the Code?

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Information for Specific GMC Models

B316B 2014 GMC Sierra — Driver Window Switch
B316B 2015 GMC Sierra — Driver Window Switch
B316B 2016 GMC Sierra — Driver Window Switch
B316B 2017 GMC Sierra — Driver Window Switch
B316B 2018 GMC Sierra — Driver 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 B316B GMC Code

1. What are the common symptoms of OBDII code B316B (GMC) related to the Driver Window Switch?

The common symptoms include the driver window being inoperative or malfunctioning, and issues with controlling the window from the driver's side switch.

2. What are the potential causes of OBDII code B316B (GMC) for the Driver Window Switch?

Possible causes include a faulty driver window switch, damaged wiring or connectors, a blown fuse, or a malfunctioning window regulator.

3. How can I diagnose the OBDII code B316B (GMC) for the Driver Window Switch?

Diagnosis involves checking the functionality of the driver window switch, inspecting the wiring and connectors for any damage, testing the fuse related to the window circuit, and examining the window regulator for any issues.

4. Can a DIY enthusiast repair OBDII code B316B (GMC) for the Driver Window Switch?

Yes, depending on the exact cause, a DIY enthusiast may be able to repair the issue by replacing the faulty switch, repairing damaged wiring, or fixing the window regulator. However, electrical repairs can be complex, so caution is advised.

5. Is it safe to continue driving with OBDII code B316B (GMC) affecting the Driver Window Switch?

Driving with a malfunctioning driver window switch can be inconvenient and potentially unsafe, especially in emergency situations. It is recommended to address the issue promptly to ensure proper functionality.

6. Are there any quick tips to troubleshoot OBDII code B316B (GMC) for the Driver Window Switch?

Quick tips include checking other power windows to see if they are working, testing the switch with a multimeter for continuity, and inspecting the fuse related to the driver window circuit.

7. What should I do if OBDII code B316B (GMC) for the Driver Window Switch keeps recurring after repair?

If the code keeps coming back after repair, it may indicate an underlying issue that was not properly addressed initially. Recheck the repairs, inspect for any missed problems, or consult a professional for further assistance.

8. Can extreme weather conditions contribute to OBDII code B316B (GMC) issues with the Driver Window Switch?

Extreme heat or cold can potentially affect the performance of electrical components, including the driver window switch. It's essential to keep the switch and related components well-maintained to minimize the impact of weather conditions.

9. How much does it typically cost to repair OBDII code B316B (GMC) related to the Driver Window Switch?

The cost of repair can vary depending on the exact cause of the issue, labor rates in your area, and whether you choose to DIY or seek professional help. Costs may include parts such as a new switch or regulator, as well as labor fees.

10. Can OBDII code B316B (GMC) for the Driver Window Switch be indicative of other underlying issues in the vehicle?

While this code specifically relates to the driver window switch, it can sometimes point to broader electrical issues within the vehicle. If other electrical components are also malfunctioning, a comprehensive inspection may be necessary.