B3130 on GMC
All Doors Unlock Circuit Malfunction
B3130 on GMC vehicles indicates all doors unlock circuit malfunction. Au7o has documented this code across 1 GMC model — most commonly on Sierra 1500. B3130 is a body code, commonly defined on GM/Opel-family vehicles as a malfunction in the all-doors-unlock circuit. The body control module monitors and drives the door lock control circuits, and it sets this code when it detects a short to battery, short to ground, or open in the circuit that unlocks all doors. The typical result is inoperative power door locks for the all-unlock function; it is a convenience-system fault rather than a safety concern. Typical repair costs on GMC range from $180 to $500, depending on the specific model and root cause.
Common Causes of B3130
- •Short to battery or ground in the all-unlock circuit
- •Open circuit / broken wire (commonly at door boot wiring)
- •Failed door lock actuator(s)
- •Corroded or damaged harness connector
- •Water intrusion into a door module or connector
- •Body control module output driver fault
B3130 on GMC by Model
GMC Sierra 1500(1 issue)
- Power Door Lock Actuator Failure Causing Intermittent or Inoperative Locking2007-2013
GMT900 Sierra trucks are well known for failing door lock actuators, often starting with one door that unlocks weakly or only works intermittently before additional doors fail. Owners report the key fob cycling the locks while one or more doors remain stuck, requiring manual operation from inside. The issue is heavily documented across GM full-size truck forums and complaint records.
Looking for B3130 on a different make?
View B3130 across all makes →Frequently Asked Questions
What does B3130 mean on GMC?▼
B3130 stands for "All Doors Unlock Circuit Malfunction." B3130 is a body code, commonly defined on GM/Opel-family vehicles as a malfunction in the all-doors-unlock circuit. The body control module monitors and drives the door lock control circuits, and it sets this code when it detects a short to battery, short to ground, or open in the circuit that unlocks all doors. The typical result is inoperative power door locks for the all-unlock function; it is a convenience-system fault rather than a safety concern. On GMC specifically, this code is documented across 1 model.
What causes B3130 on GMC vehicles?▼
Common causes on GMC: Short to battery or ground in the all-unlock circuit, Open circuit / broken wire (commonly at door boot wiring), Failed door lock actuator(s), Corroded or damaged harness connector, Water intrusion into a door module or connector. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B3130 on a GMC?▼
Repair costs on GMC range from $180 to $500, depending on the specific model and root cause.
Which GMC models have B3130 documented?▼
Au7o has documented B3130 on 1 GMC model: Sierra 1500.