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 1860 (WIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER IDENTIFICATION, COMPONENT CONNECTOR & SPLICE PACK CONNECTOR END VIEWS)COMPONENT CONNECTOR END VIEWSINFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE (SDM)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Inflatable Restraint Sensing and Diagnostic Module (SDM)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Inflatable Restraint Sensing and Diagnostic Module (SDM)
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.
Inflatable Restraint Sensing and Diagnostic Module (SDM)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 0.5 BK/WH | 1751 | Ground |
| 2 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
| 3 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
| 4 | 0.5 PK | 3022 | Steering Wheel Module - Stage 2 - Low Control (Light Duty) |
| 5 | 0.5 WH | 3023 | Steering Wheel Module - Stage 2 - High Control (Light Duty) |
| 6 | 0.5 GY | 3027 | Instrument Panel Module - Stage 2 - High Control (Light Duty with AK5) |
| 7 | 0.5 PU | 3026 | Instrument Panel Module - Stage 2 - Low Control (Light Duty with AK5) |
| 8 | 0.5 BN | 3020 | Steering Wheel Module - Stage 1 - Low Control |
| 9 | 0.5 TN | 3021 | Steering Wheel Module - Stage 1 - High Control |
| 10 | 0.5 YE | 3025 | Instrument Panel Module - Stage 1 - High Control |
| 11 | 0.5 OG | 3024 | Instrument Panel Module - Stage 1 - Low Control |
| 12 | 0.5 PK | 5020 | Roof Rail Module - Left - Low Control (ASF) |
| 13 | 0.5 PU/WH | 5019 | Roof Rail Module - Left - High Control (ASF) |
| 14 | 0.5 YE/BK | 5021 | Roof Rail Module - Right - High Control (ASF) |
| 15 | 0.5 WH/BK | 5022 | Roof Rail Module - Right - Low Control (ASF) |
| 16-21 | - | - | Not Used |
| 22 | 0.5 L-BU | 7015 | Roof Rail Module - Right Rear High Control (Passenger with ASF) |
| 23 | 0.5 TN/BK | 7016 | Roof Rail Module - Right Rear Low Control (Passenger with ASF) |
| 24 | 0.5 OG/BK | 2119 | Seat Belt Pretensioner - Left - Low Control (Light Duty) |
| 25 | 0.5 TN/WH | 2118 | Seat Belt Pretensioner - Left - High Control (Light Duty) |
| 26 | 0.5 L-GN | 2116 | Seat Belt Pretensioner - Right - High Control (Light Duty) |
| 27 | 0.5 OG | 2117 | Seat Belt Pretensioner - Right - Low Control (Light Duty) |
| 28 | 0.5 PK | 5057 | Low Reference |
| 29 | 0.5 L-GN | 5055 | Seat Position Sensor - Left - Signal (Light Duty) |
| 30 | 0.5 L-BU | 5056 | Seat Position Sensor - Right - Signal (Light Duty) |
| 31 | 0.5 RD/WH | 3440 | Battery Positive Voltage |
| 32 | 0.35 PK | 1139 | Ignition Voltage |
| 33 | 0.5 PK | 353 | Instrument Panel Module Suppression Indicator Control (C99) |
| 34 | 0.5 TN/PK | 371 | Instrument Panel Module Disable Switch - Signal (C99) |
| 35 | - | - | Not Used |
| 36 | 0.5 D-BU/WH | 6619 | Low Reference |
| 37 | - | - | Not Used |
| 38 | 0.5 BN/WH | 6618 | Discriminating Sensor - Signal |
| 39 | - | - | Not Used |
| 40 | 0.5 PU/WH | 6628 | Low Reference (ASF) |
| 41 | 0.5 WH/BK | 6629 | Low Reference (ASF) |
| 42 | 0.5 WH | 2132 | Left Front Side Impact Sensing Module Signal (ASF) |
| 43 | 0.5 D-GN | 2134 | Right Front Side Impact Sensing Module Signal (ASF) |
| 44 | 0.5 L-BU | 6622 | Left Rear Side Impact Sensing Module Signal (Passenger with ASF) |
| 45 | 0.5 L-BU/WH | 6626 | Right Rear Side Impact Sensing Module Signal (Passenger with ASF with E24/YA2) |
| 46 | 0.5 L-GN/BK | 6623 | Low Reference (Passenger with ASF) |
| 47 | 0.5 PK/BK | 6627 | Low Reference (Passenger with ASF with E24/YA2) |
| 48-57 | - | - | Not Used |
| 58 | 0.5 YE/BK | 5229 | Rollover Sensor High Signal (ASF) |
| 59 | 0.5 TN/WH | 238 | Seat Belt Switch - Left |
| 60 | 0.5 OG | 1362 | Seat Belt Switch - Right - Signal (Light Duty) |
Connector Part Information
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Terminal Part Information
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RENDER: 1.0x
NO RELATED
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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.