B318A 2017 Chevrolet Silverado Code - Left 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 Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left 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
- B318A 2017 Chevrolet Silverado indicates Left Rear Window Switch.
- Common causes
- Common causes include Faulty Left Rear Window Switch, Left Rear Window Switch harness is open or shorted, Left 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 B318A 2017 Chevrolet Silverado 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 B318A 2017 Chevrolet Silverado?
- Faulty Left Rear Window Switch
- Left Rear Window Switch harness is open or shorted
- Left Rear Window Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B318A 2017 Chevrolet Silverado?
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 B318A 2017 Chevrolet Silverado 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 B318A 2017 Chevrolet Silverado Code
1. What does OBDII code B318A on a 2017 Chevrolet Silverado indicate?
The B318A code specifically relates to an issue with the left rear window switch in the vehicle.
2. What are the common symptoms of OBDII code B318A in a 2017 Chevrolet Silverado?
Common symptoms include the left rear window not responding to the switch commands or displaying erratic behavior.
3. What are the possible causes of OBDII code B318A in a 2017 Chevrolet Silverado?
Potential causes may include a faulty left rear window switch, wiring issues, or a problem with the window motor or regulator.
4. How can I diagnose the OBDII code B318A in my 2017 Chevrolet Silverado?
Diagnosis involves inspecting the left rear window switch, checking for any visible wiring damage, and testing the window motor and regulator for proper functionality.
5. Can I repair OBDII code B318A in my 2017 Chevrolet Silverado myself?
If you are familiar with automotive electrical systems, you may be able to replace the left rear window switch or address any wiring issues yourself. Otherwise, it is recommended to seek professional help.
6. Is it safe to continue driving my 2017 Chevrolet Silverado with OBDII code B318A?
It is generally not recommended to drive with this issue as it may lead to further electrical problems or safety concerns related to the left rear window.
7. How much does it cost to repair OBDII code B318A in a 2017 Chevrolet Silverado?
The cost of repair can vary depending on the exact cause of the issue, but it may involve the cost of a new switch, labor for installation, and any additional parts or repairs needed.
8. Can OBDII code B318A in a 2017 Chevrolet Silverado cause other electrical problems in the vehicle?
While the code specifically relates to the left rear window switch, electrical issues in one part of the vehicle can sometimes affect other systems, so it's essential to address the problem promptly.
9. Are there any recalls or technical service bulletins related to OBDII code B318A in a 2017 Chevrolet Silverado?
Check with your local Chevrolet dealership or visit the manufacturer's website to see if there are any recalls or bulletins related to this specific OBDII code in your vehicle.
10. What steps can I take to prevent OBDII code B318A from occurring again in my 2017 Chevrolet Silverado?
Regularly maintaining and inspecting your vehicle's electrical components, such as the window switches and wiring, can help prevent issues like B318A from happening again.
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