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 MANUALSCHEVROLET2012CHEVY EXPRESS G2500, VAN PASSENGER, 4.8L ENG VIN AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2464 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEW 3 OF 5)INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE (SDM) (HP2 WITH ASF)
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN A
Inflatable Restraint Sensing and Diagnostic Module (SDM) (HP2 with ASF)
2012 Chevrolet Chevy Express G2500, Van Passenger, 4.8L Eng VIN ASECTION Inflatable Restraint Sensing and Diagnostic Module (SDM) (HP2 with ASF)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Inflatable Restraint Sensing and Diagnostic Module (SDM)(HP2 with ASF)
| Pin | Wire Color | Circuit | Function |
|---|---|---|---|
| 1 | 0.5 BK/WH | 2751 | Low Reference |
| 2 | 0.35 D-GN | 5060 | Low Speed GMLAN Serial Data |
| 3 | - | - | Not Used |
| 4 | 0.5 PK | 3022 | Steering Wheel Module - Stage2 - Low Control |
| 5 | 0.5 WH | 3023 | Steering Wheel Module - Stage2 - High Control |
| 6 | 0.5 GY | 3027 | I/P Module - Stage 2 - High Control |
| 7 | 0.5 PU | 3026 | I/P Module - Stage 2 - Low Control |
| 8 | 0.5 BN | 3020 | Steering Wheel Module - Stage1 - Low Control |
| 9 | 0.5 TN | 3021 | Steering Wheel Module - Stage1 - High Control |
| 10 | 0.5 YE | 3025 | I/P Module - Stage 1 - High Control |
| 11 | 0.5 OG | 3024 | I/P Module - Stage 1 - Low Control |
| 12 | 0.5 PK | 5020 | Roof Rail Module - Left - Low Control |
| 13 | 0.5 PU/WH | 5019 | Roof Rail Module - Left - High Control |
| 14 | 0.5 YE/BK | 5021 | Roof Rail Module - Right - High Control |
| 15 | 0.5 WH/BK | 5022 | Roof Rail Module- Right - Low Control |
| 16 | 0.5 OG/BK | 2119 | Seat Belt Pretensioner - Left - Low Control |
| 17 | 0.5 TN/WH | 2118 | Seat Belt Pretensioner - Left - High Control |
| 18 | 0.5 L-GN | 2116 | Seat Belt Pretensioner - Right - High Control |
| 19 | 0.5 OG | 2117 | Seat Belt Pretensioner - Right - Low Control |
| 20 | 0.5 TN | 7014 | Inflatable Restraint Roof Rail Module - Left Rear Low Control |
| 21 | 0.5 YE | 7013 | Inflatable Restraint Roof Rail Module - Left Rear High Control |
| 22 | 0.5 L-BU | 7015 | Inflatable Restraint Roof Rail Module - Right Rear High Control |
| 23 | 0.5 TN/BK | 7016 | Inflatable Restraint Roof Rail Module - Right Rear Low Control |
| 24-27 | - | - | Not Used |
| 28 | 0.35 PK | 5057 | Low Reference |
| 29 | 0.35 L-GN | 5055 | Seat Position Sensor- Left - Signal |
| 30 | - | - | Not Used |
| 31 | 0.5 RD/WH | 4440 | Battery Positive Voltage |
| 32 | 0.35 PK | 1139 | Ignition Voltage |
| 33-35 | - | - | Not Used |
| 36 | 0.5 YE | 354 | Discriminating Sensor - Signal |
| 37 | 0.5 D-GN | 1409 | Discriminating Sensor - Right - Signal |
| 38 | 0.5 TN/OG | 5045 | Front End Sensor - Signal |
| 39 | 0.5 GY | 5600 | Low Reference |
| 40 | 0.5 PU/WH | 6628 | Low Reference |
| 41 | 0.5 WH/BK | 6629 | Low Reference |
| 42 | 0.5 WH | 2132 | Side Impact Sensing Module - Left - Signal |
| 43 | 0.5 D-GN | 2134 | Side Impact Sensing Module - Right - Signal |
| 44 | 0.5 L-BU | 6622 | Inflatable Restraint Side Impact Sensor (SIS) - Left Rear Signal |
| 45 | 0.5 L-BU/WH | 6626 | Inflatable Restraint Side Impact Sensor (SIS) - Right Rear Signal |
| 46 | 0.5 L-GN/BK | 6623 | Low Reference |
| 47 | 0.5 PK/BK | 6627 | Low Reference |
| 48-57 | - | - | Not Used |
| 58 | 0.5 YE/BK | 5229 | Rollover Sensor High Signal |
| 59 | 0.35 TN/WH | 238 | Seat Belt Switch - Left |
| 60 | 0.35 OG | 1362 | Seat Belt Switch - Right - Signal |
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.