SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 501 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B0014-B0045CIRCUIT/SYSTEM TESTING
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Circuit/System Testing

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
  • Pretensioner
  • Air bag module
  • SDM module
  • Air bag wiring harness connector
  • SDM wiring harness connector
    IMPORTANT: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.
  1. Verify that the appropriate inflator restraint module connector and CPA are engaged.
    • If the above condition is not found, make the appropriate repair.
  2. Ignition OFF, disconnect the harness connector at the appropriate inflatable restraint module.
  3. With the appropriate load tool adaptor, connect J 38715-A  in place of the inflatable restraint module.
  4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
    • If the DTC is not set or is set as history, cycle ignition OFF, disconnect the load tool and adaptor, reconnect the harness connector at the inflator restraint module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the inflator restraint module.
  5. Ignition OFF, disconnect the load tool and adaptor.

    Disconnect the harness connector at the SDM.

  6. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A1 (light duty)
    • I/P Module - Stage 1 terminal A (heavy duty)
    • I/P Module - Stage 2 terminal B1
    • Left Front Roof Rail Module terminal B
    • Right Front Roof Rail Module terminal B
    • Right Rear Roof Rail Module terminal B
    • Seat Belt Pretensioner - Left terminal A X2
    • Seat Belt Pretensioner - Right terminal A X2
    • If greater than the specified range, test the control circuit for a short to voltage.
  7. Test for less than 1 volt between the appropriate low control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A2 (light duty)
    • I/P Module - Stage 1 terminal B (heavy duty)
    • I/P Module - Stage 2 terminal B2
    • Left Front Roof Rail Module terminal A
    • Right Front Roof Rail Module terminal A
    • Right Rear Roof Rail Module terminal A
    • Seat Belt Pretensioner - Left terminal B X2
    • Seat Belt Pretensioner - Right terminal B X2
    • If greater than the specified range, test the control circuit for a short to voltage.
  8. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A1 (light duty)
    • I/P Module - Stage 1 terminal A (heavy duty)
    • I/P Module - Stage 2 terminal B1
    • Left Front Roof Rail Module terminal B
    • Right Front Roof Rail Module terminal B
    • Right Rear Roof Rail Module terminal B
    • Seat Belt Pretensioner - Left terminal A X2
    • Seat Belt Pretensioner - Right terminal A X2
    • If not the specified value, test the control circuit for a short to ground.
  9. Test for infinite resistance between the appropriate low control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A2 (light duty)
    • I/P Module - Stage 1 terminal B (heavy duty)
    • I/P Module - Stage 2 terminal B2
    • Left Front Roof Rail Module terminal A
    • Right Front Roof Rail Module terminal A
    • Right Rear Roof Rail Module terminal A
    • Seat Belt Pretensioner - Left terminal B X2
    • Seat Belt Pretensioner - Right terminal B X2
    • If not the specified value, test the control circuit for a short to ground.
  10. Test for less then 5 ohms between the following high control circuit terminals listed below:
    • I/P Module - Stage 1 terminal A1 at the I/P harness connector and terminal 10 at the SDM harness connector (light duty).
    • I/P Module - Stage 1 terminal A at the I/P harness connector and terminal 10 at the SDM harness connector (heavy duty).
    • I/P Module - Stage 2 terminal B1 at the I/P harness connector and terminal 6 at the SDM harness connector.
    • Left Front Roof Rail Module terminal B at the harness connector and terminal 13 at the SDM harness connector.
    • Right Front Roof Rail Module terminal B at the harness connector and terminal 14 at the SDM harness connector.
    • Right Rear Roof Rail Module terminal B at the harness connector and terminal 22 at the SDM harness connector.
    • Seat Belt Pretensioner - Left terminal A at the X2 harness connector and terminal 25 at the SDM harness connector.
    • Seat Belt Pretensioner - Right terminal A at the X2 harness connector and terminal 26 at the SDM harness connector.
    • If greater than the specified range, test the control circuit for an open/high resistance.
  11. Test for less then 5 ohms between the following low control circuit terminals listed below:
    • I/P Module - Stage 1 terminal A2 at the harness connector and terminal 11 at the SDM harness connector (light duty).
    • I/P Module - Stage 1 terminal B at the harness connector and terminal 11 at the SDM harness connector (heavy duty).
    • I/P Module - Stage 2 terminal B2 at the harness connector and terminal 7 at the SDM harness connector.
    • Left Front Roof Rail Module terminal A at the harness connector and terminal 12 at the SDM harness connector.
    • Right Front Roof Rail Module terminal A at the harness connector and terminal 15 at the SDM harness connector.
    • Right Rear Roof Rail Module terminal A at the harness connector and terminal 23 at the SDM harness connector.
    • Seat Belt Pretensioner - Left terminal B at the X2 harness connector and terminal 24 at the SDM harness connector.
    • Seat Belt Pretensioner - Right terminal B at the X2 harness connector and terminal 27 at the SDM harness connector.
    • If greater than the specified range, test the control circuit for an open/high resistance.
  12. If all circuits test normal, replace the SDM.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.