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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1229 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B0015CIRCUIT/SYSTEM VERIFICATION
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Circuit/System Verification
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Circuit/System Verification
WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
- The LF seat belt retractor pretensioner
- The SDM module
- The LF seat belt retractor pretensioner wiring harness connector
- The SDM wiring harness connector
- Ignition OFF, disconnect the harness connector at the LF inflatable restraint seat belt pretensioner.
- Use the appropriate load tool adapter to connect the J 38715-A to the harness side of the LF inflatable restraint seat belt pretensioner connector. See Special Tools . Use the PASSENGER INFLATOR connector located on the load tool.
- Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
- If DTC is not set or is set as history, replace the LF inflatable restraint seat belt pretensioner.
- Ignition OFF, disconnect the appropriate load tool adapter and J 38715-A . See Special Tools .
- Disconnect the harness connector at the SDM.
- Ignition ON, test for less than 1-volt between the high control circuit terminal 2 and ground.
- If not within the specified range, test the circuit for a short to voltage.
- Test for less than 1-volt between the low control circuit terminal 1 and ground.
- If not within the specified range, test the circuit for a short to voltage.
- Ignition OFF, test for infinite resistance between the high control circuit terminal 2 and ground.
- If not within the specified range, test the circuit for a short to ground.
- Test for infinite resistance between the applicable low control circuit terminal 1 and ground.
- If not within the specified range, test the circuit for a short to ground.
- Test for less then 1 ohm between the LF inflatable restraint seat belt pretensioner terminal 1 and SDM terminal 53.
- If not within the specified range, test the circuit for an open/high resistance.
- Test for less then 1 ohm between the LF inflatable restraint seat belt pretensioner terminal 2 and SDM terminal 52.
- If not within the specified range, test the circuit for an open/high resistance.
- If all circuits test normal, replace the SDM.
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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.