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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 680 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)COMPONENT LOCATORSIR CONNECTORS
2006 Chevrolet Suburban K2500, 6.0 U
SIR Connectors
2006 Chevrolet Suburban K2500, 6.0 USECTION SIR Connectors
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Inflatable Restraint Front End Sensor - Left (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | GY | 349 | Discriminating Sensor - Left - Signal |
| 2 | YE | 354 | Discriminating Sensor - Signal |
Inflatable Restraint Front End Sensor - Right (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | YE | 1834 | Forward Discriminating Sensor Signal |
| 2 | D-GN | 1409 | Discriminating Sensor - Right - Signal |
Inflatable Restraint Front End Sensor (HVY)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | YE | 1834 | Forward Discriminating Sensor Signal |
| 2 | D-GN | 1409 | Discriminating Sensor - Right - Signal |
Inflatable Restraint I/P Module
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | YE | 3025 | I/P Module - Stage 1 - High Control |
| A2 | OG | 3024 | I/P Module - Stage 1 - Low Control |
| B1 | GY | 3027 | I/P Module - Stage 2 - High Control (w/Dual Stage) (AL0) |
| B2 | PU | 3026 | I/P Module - Stage 2 - Low Control (w/Dual Stage) (AL0) |
Inflatable Restraint Steering Wheel Module - Single Stage (HVY)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WH | 347 | Steering Wheel Module - High Control |
| B | D-GN | 348 | Steering Wheel Module - Low Control |
Inflatable Restraint Steering Wheel Module C1 - Dual Stage (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TN | 3021 | Steering Wheel Module - Stage 1 - High Control |
| B | BN | 3020 | Steering Wheel Module - Stage 1 - Low Control |
Inflatable Restraint Steering Wheel Module C2 - Dual Stage (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | WH | 3023 | Steering Wheel Module - Stage 2 - High Control |
| B | PK | 3022 | Steering Wheel Module - Stage 2 - Low Control |
Inflatable Restraint Sensing and Diagnostic Module (SDM)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | YE | 1139 | Ignition 1 Voltage |
| 2 | PK | 2306 | Serial Data (AL0) |
| TN/BK | 371 | I/P Module Disable Switch - Signal (Except 10 Series and Crew Cab) | |
| 3 | BK/WH | 238 | Seat Belt Switch - Left |
| 4 | RD | 1362 | Seat Belt Switch - Right - Signal (AL0) |
| PK | 353 | I/P Module Suppression Indicator Control (Except 10 Series and Crew Cab) | |
| 5 | GY | 349 | Front End Sensor - Left - Signal (AL0) |
| 6 | YE | 1834 | Front End Sensor - Right - Signal |
| 7 | - | - | Not Used |
| 8 | TN | 2163 | Side Impact Sensor - Right - Voltage (HP2) |
| 9 | YE | 3025 | I/P Module - Stage 1 - High Control |
| 10 | OG | 3024 | I/P Module - Stage 1 - Low Control |
| 11 | D-BU | 1363 | Low Reference |
| 12 | BN | 3020 | Steering Wheel Module - Stage 1 - Low Control |
| 13 | TN | 3021 | Steering Wheel Module - Stage 1 - High Control |
| 14-21 | - | - | Not Used |
| 22 | D-BU | 1128 | Class 2 Serial Data |
| 23 | - | - | Not Used |
| 24 | L-GN | 5055 | Seat Position Switch - Left - Signal (AL0) |
| 25 | L-BU | 5056 | Seat Position Switch - Right - Signal (AL0) |
| 26 | YE | 354 | Front End Sensor - Left - Low Reference (AL0) |
| 27 | D-GN | 1409 | Front End Sensor - Right - Low Reference |
| 28 | - | - | Not Used |
| 29 | D-GN | 2164 | Side Impact Sensor - Right - Signal (HP2) |
| 30 | GY | 3027 | I/P Module - Stage 2 - High Control (AL0) |
| 31 | PU | 3026 | I/P Module - Stage 2 - Low Control (AL0) |
| 32 | BK | 2351 | Ground |
| 33 | PK | 3022 | Steering Wheel Module - Stage 2 - Low Control (AL0) |
| - | - | Not Used - 30 Series and Crew Cab (HVY) | |
| 34 | WH | 3023 | Steering Wheel Module - Stage 2 - High Control (AL0) |
| - | - | Not Used - 30 Series and Crew Cab (HVY) | |
| 35-42 | - | - | Not Used |
Inflatable Restraint Seat Position Switch - Left (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | L-GN | 5055 | Seat Position Switch - Left - Signal |
| B | YE | 234 | Low Reference |
Inflatable Restraint Seat Position Switch - Right (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | L-BU | 5056 | Seat Position Switch - Right - Signal |
| B | YE | 234 | Low Reference |
Inflatable Restraint Passenger Seat Belt Tension Retractor Sensor (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | L-BU | 906 | Passenger Seat Belt Tension Retractor Sensor - 5-Volt Reference |
| B | TN | 905 | Passenger Seat Belt Tension Retractor Sensor - Low Reference |
| C | YE | 904 | Passenger Seat Belt Tension Retractor Sensor - Signal |
Inflatable Restraint Passenger Presence System (PPS) Sensor (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BN/WH | 903 | PPS Sensor - Low Reference |
| B | PU | 901 | PPS Sensor Signal |
| C | WH | 902 | PPS Sensor - 5-Volt Reference |
Inflatable Restraint Passenger Presence Module (AL0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | D-BU | 2307 | Passenger Air Bag On Indicator Control |
| 2 | D-GN | 2308 | Passenger Air Bag Off Indicator Control |
| 3 | - | - | Not Used |
| 4 | YE | 904 | Passenger Seat Belt Tension Retractor Sensor - Signal |
| 5 | BK | 2351 | Ground |
| 6 | PU | 901 | PPS Sensor Signal |
| 7 | WH | 902 | PPS Sensor - 5-Volt Reference |
| 8 | - | - | Not Used |
| 9 | YE | 1139 | Ignition 1 Voltage |
| 10 | PK | 353 | I/P Module Suppression Indicator Control |
| 11 | TN/BK | 371 | I/P Module Disable Switch - Signal |
| 12-13 | - | - | Not Used |
| 14 | TN | 905 | Passenger Seat Belt Tension Retractor Sensor - Low Reference |
| 15 | BN/WH | 903 | PPS Sensor - Low Reference |
| 16 | L-BU | 906 | Passenger Seat Belt Tension Retractor Sensor - 5-Volt Reference |
| 17 | - | - | Not Used |
| 18 | PK | 2306 | Serial Data |
Inflatable Restraint I/P Module Disable Switch (Except 10 Series and Crew Cab)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | TN/BK | 371 | I/P Module Disable Switch - Signal |
| B | YE | 1139 | Ignition 1 Voltage |
| C | BN | 2409 | Interior Park Lamps Supply Voltage |
| D | BN/WH | 230 | Instrument Panel Lamps Dimming Control |
| E | PK | 353 | I/P Module Suppression Indicator Control |
| F | BK | 1050 | Ground |
Inflatable Restraint Side Impact Sensor (SIS) - Right (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | D-GN | 2164 | Side Impact Sensor - Right - Signal |
| B | TN | 2163 | Side Impact Sensor - Right - Voltage |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.