B3135 2018 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 2018 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 2018 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 2018 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 2018 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 2018 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 2018 GMC Sierra Code
1. What are common symptoms of OBDII code B3135 in a 2018 GMC Sierra related to the All Doors Lock Circuit?
- Common symptoms include issues with all doors locking or unlocking properly, malfunctioning door lock switches, or the inability to lock or unlock doors remotely.
2. What are the possible causes of OBDII code B3135 in a 2018 GMC Sierra?
- Possible causes include a faulty door lock actuator, damaged wiring or connectors in the door lock circuit, or a malfunctioning door control module.
3. How can I diagnose the All Doors Lock Circuit issue causing OBDII code B3135 in my 2018 GMC Sierra?
- You can start by checking the fuse related to the door locks, inspecting the wiring harness for any visible damage, and using a multimeter to test the door lock actuators and switches for proper functioning.
4. Can a DIY enthusiast repair OBDII code B3135 related to the All Doors Lock Circuit in a 2018 GMC Sierra?
- Repairing this issue may require advanced electrical diagnostic skills and specialized tools. It is recommended to consult a professional mechanic for accurate diagnosis and repair.
5. Are there any quick tips to troubleshoot OBDII code B3135 in a 2018 GMC Sierra before seeking professional help?
- You can try resetting the vehicle's computer system by disconnecting the battery for a few minutes. Additionally, ensure all door lock switches are in good working condition and there are no physical obstructions preventing proper locking.
6. Is it safe to continue driving my 2018 GMC Sierra with OBDII code B3135 related to the All Doors Lock Circuit?
- While the vehicle may still be operable with this code, it is essential to address the underlying issue promptly to prevent potential safety hazards or further damage to the door locking system.
7. How much does it typically cost to repair OBDII code B3135 in a 2018 GMC Sierra at a dealership or repair shop?
- The cost of repair can vary depending on the specific cause of the issue. It is advisable to obtain quotes from multiple reputable repair facilities to compare prices and services offered.
8. Can extreme weather conditions affect the All Doors Lock Circuit in a 2018 GMC Sierra and trigger OBDII code B3135?
- Yes, extreme temperatures or moisture can sometimes lead to electrical issues in the door lock circuit, causing malfunctions that trigger the OBDII code B3135.
9. Will disconnecting the battery reset the OBDII code B3135 related to the All Doors Lock Circuit in a 2018 GMC Sierra?
- Disconnecting the battery may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the system detects the problem again.
10. How long does it typically take to diagnose and repair OBDII code B3135 in a 2018 GMC Sierra at a professional auto repair shop?
- The diagnostic process can take anywhere from 30 minutes to an hour, depending on the complexity of the issue. Repair times vary based on the specific repairs needed and the availability of parts.
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