B0056
Rear Left Seat Belt Pretensioner Circuit
2002-2009 GMC Envoy 4.2L I6
Critical SeverityBodyGeneric (SAE)
Description
Malfunction in the rear left seat belt pretensioner deployment circuit.
Symptoms
- Airbag/seatbelt warning light on
- SRS code stored
- Rear left pretensioner inoperative
Common Causes
- Faulty pretensioner
- Wiring damage under rear seat
- Connector issue
- Water damage from rear window leak
Diagnostic Steps
- Scan SRS codes
- Inspect rear left pretensioner connector
- Check wiring under rear seat
- Look for moisture damage
Repair Notes
Replace pretensioner or repair wiring. Check for water intrusion.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0005Driver Knee Airbag Deployment Circuit
B0056 on Other Vehicles
Common Questions
What does code B0056 mean on a 2002-2009 GMC Envoy?
B0056 stands for "Rear Left Seat Belt Pretensioner Circuit". Malfunction in the rear left seat belt pretensioner deployment circuit.
What are the symptoms of B0056 on a GMC Envoy?
Common symptoms of B0056 include: Airbag/seatbelt warning light on, SRS code stored, Rear left pretensioner inoperative.
What causes B0056 on a 2002-2009 GMC Envoy?
Common causes of B0056 include: Faulty pretensioner, Wiring damage under rear seat, Connector issue, Water damage from rear window leak.