B316B 2015 GMC Sierra 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 2015 GMC Sierra 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.
Code B316B 2015 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 B316B 2015 GMC Sierra?
- 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 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 B316B 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 B316B 2015 GMC Sierra Code
1. What does the OBDII code B316B mean on a 2015 GMC Sierra?
The code B316B indicates an issue with the driver window switch, typically involving communication or functionality problems.
2. What are the common symptoms of the B316B code?
Symptoms may include the driver window not responding to switch inputs, intermittent operation, or other power window malfunctions.
3. What causes the B316B code to appear?
This code can be triggered by a faulty driver window switch, wiring issues, a blown fuse, or a malfunction in the Body Control Module (BCM).
4. How do I diagnose the B316B code?
Start by checking the driver window switch for physical damage, inspect the wiring and connectors for corrosion or disconnection, and test the circuit for proper voltage.
5. Can the B316B code be caused by a software issue?
Yes, in some cases, the BCM may require reprogramming or an update to resolve communication problems with the window switch.
6. How do I fix the B316B code on a 2015 GMC Sierra?
Repairs may involve replacing the driver window switch, repairing damaged wiring, replacing a blown fuse, or reprogramming the BCM.
7. Is the B316B code a serious problem?
While not critical for vehicle operation, it can be inconvenient and may indicate underlying electrical issues that should be addressed promptly.
8. Can a faulty driver window motor cause the B316B code?
A bad window motor itself is unlikely to trigger this code, but it’s worth testing if the motor is not responding to switch commands.
9. How much does it cost to fix the B316B code?
The repair cost depends on the root cause but typically ranges from $50 to $300, depending on whether the switch or wiring needs replacement.
10. Can I clear the B316B code without fixing the problem?
Clearing the code with a scan tool may work temporarily, but the code will likely return if the underlying issue isn’t resolved.
Discuss the causes and fixes for B316B 2015 GMC Sierra OBDII Code
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