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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1326 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B0083-B0088CIRCUIT/SYSTEM TESTING
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Circuit/System Testing
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- The impact sensor
- The SDM module
- The impact sensor wiring harness connector
- The SDM wiring harness connector
- Ignition OFF, disconnect the harness connector at the appropriate impact sensor and the harness connector at the SDM.
- Test for infinite resistance between the signal circuit terminal B and ground.
- If less than the specified range, test the signal circuit for a short to ground.
- Ignition ON, test for less than 1 volt between the signal circuit terminal B and ground.
- If greater than the specified range, test the circuit for a short to voltage.
- Test for less then 1 ohm between the appropriate low reference circuit terminal at the sensor and the appropriate low reference circuit terminal at the SDM:
- Left Front Sensor - Low Reference circuit terminal A at the sensor and the low reference circuit terminal 38 at the SDM.
- Right Front End Sensor - Low Reference circuit terminal A at the sensor and the low reference circuit terminal 39 at the SDM.
- Left Side Sensor - Low Reference circuit terminal A at the sensor and the low reference circuit terminal 40 at the SDM.
- Right Side Sensor - Low Reference circuit terminal A at the sensor and the low reference circuit terminal 41 at the SDM.
- If greater than the specified range, test the circuit for an open/high resistance.
- Test for less then 1 ohm between the appropriate signal circuit terminal at the sensor and the appropriate signal circuit terminal at the SDM:
- Left Front Sensor - Signal circuit terminal B at the sensor and the signal circuit terminal 36 at the SDM.
- Right Front End Sensor - Signal circuit terminal B at the sensor and the signal circuit terminal 37 at the SDM.
- Left Side Sensor - Signal circuit terminal B at the sensor and the signal circuit terminal 42 at the SDM.
- Right Side Sensor - Signal circuit terminal B at the sensor and the signal circuit terminal 43 at the SDM.
- If greater than the specified range, test the circuit for an open/high resistance.
- If all circuits test normal, replace the impact sensor.
- With a scan tool, clear DTCs and operate the vehicle within the condition for running the DTC. Verify DTC B0084, B0085, or B0086 does not set.
- If any of the DTCs set, replace the SDM.
IMPORTANT:
When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
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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.