B3135 2014 GMC Sierra Code - All Doors Lock Circuit
Quick Answer
The Body Control Module (BCM) supplies a 12-volt signal to the lock and unlock signal circuits of the driver and passenger door lock switches. Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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
- B3135 2014 GMC Sierra indicates All Doors Lock Circuit.
- Common causes
- Common causes include Faulty Door Latch Assembly, Door Latch Assembly harness is open or shorted, Door Latch Assembly 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 B3135 2014 GMC Sierra Description
The BCM, upon receipt of a lock switch lock or unlock signal, will supply voltage to the door lock actuator lock or unlock control circuits. Since the opposite side of the lock actuator is connected to the ground through the other lock actuator control circuit, the doors will then lock or unlock as commanded. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground or open/high resistance on a door latch control circuit.
What are the Possible Causes of the DTC B3135 2014 GMC Sierra?
- Faulty Door Latch Assembly
- Door Latch Assembly harness is open or shorted
- Door Latch Assembly circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3135 2014 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 B3135 2014 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 B3135 2014 GMC Sierra Code
1. What does the OBDII code B3135 indicate on a 2014 GMC Sierra?
The B3135 code on a 2014 GMC Sierra indicates a malfunction in the "All Doors Lock Circuit," suggesting an issue with the door lock mechanisms or the circuit controlling them.
2. What symptoms might I notice if my 2014 GMC Sierra has the B3135 code?
Symptoms can include the inability to lock or unlock all doors using the key fob or the interior lock switch, erratic behavior of the door locks, or the door lock actuators working intermittently.
3. What are common causes for the B3135 code in a 2014 GMC Sierra?
Common causes include faulty door lock actuators, damaged wiring in the door lock circuit, a bad door lock relay, or issues with the body control module.
4. How can I diagnose the B3135 code in my 2014 GMC Sierra?
Diagnosing this issue typically involves using a scan tool to confirm the code, visually inspecting the wiring and connectors for damage, and testing the functionality of the door lock actuators and relays.
5. What steps should I take to fix the B3135 code in a 2014 GMC Sierra?
Repair steps may include replacing faulty door lock actuators, repairing or replacing damaged wiring, replacing defective relays, or in some cases, reprogramming or replacing the body control module.
6. Can I drive my 2014 GMC Sierra with the B3135 code active?
While you can technically still drive the vehicle, the security of your vehicle might be compromised if the doors cannot be locked properly. It's advisable to address the issue as soon as possible.
7. Is the B3135 code a serious issue for the 2014 GMC Sierra?
Yes, it can be considered serious regarding vehicle security and functionality, as it affects the ability to securely lock the vehicle doors, potentially increasing the risk of theft or break-ins.
8. Will the B3135 code clear itself once the issue is fixed on my 2014 GMC Sierra?
Yes, once the underlying issue is resolved, you can clear the code with a scan tool, and it should not return unless there is another fault in the system.
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