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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 643 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEW 3 OF 5)INFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE (SDM) (WITHOUT ASF)
2009 Chevrolet Tahoe Base, 4.8 C
Inflatable Restraint Sensing and Diagnostic Module (SDM) (without ASF)
2009 Chevrolet Tahoe Base, 4.8 CSECTION Inflatable Restraint Sensing and Diagnostic Module (SDM) (without 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) (without 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 Available |
| 4 | 0.5 PK | 3022 | Steering Wheel Module - Stage 2 - Low Control |
| 5 | 0.5 WH | 3023 | Steering Wheel Module - Stage 2 - High Control |
| 6 | 0.5 GY | 3027 | I/P -- High Control |
| 7 | 0.5 PU | 3026 | I/P Module - Stage 2 - Low Control |
| 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 | I/P Module - Stage 1 - High Control |
| 11 | 0.5 OG | 3024 | I/P Module - Stage 1 - Low Control |
| 12-15 | - | - | Not Available |
| 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 |
| 20-27 | - | - | Not Available |
| 28 | 0.35 PK | 5057 | Low Reference |
| 29 | 0.35 L-GN | 5055 | Seat Position Sensor - Left - Signal |
| 30 | 0.35 L-BU | 5056 | Seat Position Sensor - Right - Signal |
| 31 | 0.5 RD/WH | 4440 | Battery Positive Voltage |
| 32 | 0.35 PK | 1139 | Ignition Voltage |
| 33-35 | - | - | Not Available |
| 36 | 0.5 YE | 354 | Discriminating Sensor - Signal |
| 37 | 0.5 D-GN | 1409 | Discriminating Sensor - Right - Signal |
| 38 | 0.5 TN/OG | 5045 | Low Reference |
| 39 | 0.5 GY | 5600 | Low Reference |
| 40-58 | - | - | Not Available |
| 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.