B3145 2016 GMC Sierra Code - Passenger Door Unlock Switch Circuit
Quick Answer
The Body Control Module (BCM) monitors the voltage level of the door lock and door unlock signal circuits. Common causes include Faulty Passenger Door Unlock Switch, Passenger Door Unlock Switch harness is open or shorted, Passenger Door Unlock 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
- B3145 2016 GMC Sierra indicates Passenger Door Unlock Switch Circuit.
- Common causes
- Common causes include Faulty Passenger Door Unlock Switch, Passenger Door Unlock Switch harness is open or shorted, Passenger Door Unlock 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 B3145 2016 GMC Sierra Description
What are the Possible Causes of the DTC B3145 2016 GMC Sierra?
- Faulty Passenger Door Unlock Switch
- Passenger Door Unlock Switch harness is open or shorted
- Passenger Door Unlock Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3145 2016 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 B3145 2016 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 B3145 2016 GMC Sierra Code
1. What does the OBDII code B3145 mean on a 2016 GMC Sierra?
The B3145 code indicates an issue with the passenger door unlock switch circuit, which may prevent proper operation of the door unlock function.
2. What are common symptoms of the B3145 code on a 2016 GMC Sierra?
Symptoms include the passenger door not unlocking, intermittent unlocking issues, or no response from the unlock switch on the passenger side.
3. What causes the B3145 code to appear in a 2016 GMC Sierra?
Common causes include a faulty passenger door unlock switch, damaged wiring or connectors in the unlock switch circuit, or a malfunctioning body control module (BCM).
4. Can a blown fuse cause the B3145 code on my 2016 GMC Sierra?
Yes, a blown fuse in the circuit related to the passenger door unlock switch can cause the B3145 code to trigger.
5. How can I diagnose the B3145 code on my 2016 GMC Sierra?
Start by inspecting the unlock switch, wiring, and connectors for damage. Use a multimeter to test continuity and check for proper voltage in the circuit.
6. Can the passenger door still be unlocked manually with the B3145 code?
Yes, the door can usually be unlocked manually using the interior handle or key, even if the electronic unlock function is not working.
7. How do I fix the B3145 code on a 2016 GMC Sierra?
Repairs may include replacing the passenger door unlock switch, repairing damaged wiring or connectors, or reprogramming or replacing the body control module if necessary.
8. Is it safe to drive with the B3145 code on my 2016 GMC Sierra?
While it’s generally safe to drive, the passenger door unlock function may not work as intended, which could be inconvenient or a security concern.
9. Can a malfunctioning body control module (BCM) cause the B3145 code?
Yes, a faulty body control module can disrupt communication with the passenger door unlock circuit, triggering the B3145 code.
10. Do I need to clear the B3145 code manually after repairs on my 2016 GMC Sierra?
In most cases, the code will clear automatically after successful repairs, but if it persists, you can use an OBDII scanner to clear it manually.
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