Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1993SPORTVAN G30, VAN PASSENGER, 7.4 NREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 50 (AIR BAG RESTRAINT SYSTEM)
1993 Chevrolet Sportvan G30, Van Passenger, 7.4 N
Section 50 (Air Bag Restraint System)
1993 Chevrolet Sportvan G30, Van Passenger, 7.4 NSECTION Section 50 (Air Bag Restraint System)
WARNING: This page is about a different car, the 1993 GMC Safari and 1993 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
- Identification
- Diagnosis & Testing
- Symptom Testing - Diagnostic Charts
- Sir Diagnostic System Check
- Chart A - DERM Integrity Check
- Chart B - Air Bag Light Comes On Steady
- Chart C (1 Of 2) - Air Bag Light Does Not Come On
- Chart C (2 Of 2) - Air Bag Light Does Not Come On
- Chart D - Air Bag Light Does Not Come On Steady During Crank
- Chart E - Air Bag Light Flashes DTC 12
- Chart F - DERM Cannot Communicate Through Serial Data Line
- DTC 14 - Arming Sensor Disconnected
- DTC 21 - Driver Initiator Circuit Resistance High
- DTC 22 - Driver Initiator Circuit Resistance Low
- DTC 23 (1 Of 2) - Driver Initiator Circuit Voltage High
- DTC 23 (2 Of 2) - Driver Initiator Circuit Voltage High
- DTC 24 (1 Of 2) - Driver Initiator Circuit Voltage Low
- DTC 24 (2 Of 2) - Driver Initiator Circuit Voltage Low
- DTC 25 - Driver Initiator Circuit Short To Ignition
- DTC 26 - Driver Initiator Circuit Open
- DTC 28 - Current Sink Or Source Failure
- DTC 31 - Driver Loop Energy Reserve Feed Open
- DTC 34 - Arming Sensor Ignition Feed Open
- DTC 35 (1 Of 2) - Discriminating Sensor Open Or Missing
- DTC 35 (2 Of 2) - Discriminating Sensor Open Or Missing
- DTC 42 - Loop Energy Reserve Voltage Low
- DTC 43 - Driver Source Feed Low
- DTC 51 - Frontal Crash Detected
- DTC 52 - Data Area Full
- DTC 53 - DERM Driver Initiator Circuit High Resistance
- DTC 55 - DERM Incompatibility
- DTC 61 - Sir Initiator Circuit Failure
- DTC 62 - Redundant Sir Indicator Circuit Failure
- DTC 71 And/Or 75 - Internal DERM Fault
- DTC 83 - Driver Reserve Diode Shorted
- Description & Operation
- Service Precautions
- Disabling & Activating Air Bag System
- Post-Collision Inspection
- Adjustments
- Disposal Procedures
- Removal & Installation
- Testing - System Operation Check
- Wire Repair
- Torque Specifications
- Wiring Diagrams
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.