B0004critical severityBody
Passenger Frontal Stage 2 Deployment Control
on 2005 GMC Envoy 4.2L I6 · 4WD
What this code means
Malfunction in the passenger frontal airbag stage 2 deployment circuit. The stage 2 inflator provides additional inflation force during severe frontal collisions.
Symptoms
- Airbag warning light on
- Passenger airbag OFF indicator illuminated
- SRS system fault stored
- Airbag may not deploy fully in a crash
Common causes
- Faulty airbag inflator module
- Damaged wiring harness under dash
- Airbag control module failure
- Corroded connector at airbag module
Diagnostic steps
- Scan SRS module for codes
- Inspect passenger airbag connector
- Measure circuit resistance
- Check wiring harness from module to airbag
- Verify airbag control module power and ground
Repair notes
Professional airbag service required. Do not attempt DIY airbag repairs. Disconnect battery and wait 10 minutes before working near airbag components.
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Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit
B0006
Passenger Knee Airbag Deployment Circuit