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 MANUALSCHEVROLET2006CAB & CHASSIS SILVERADO 2D PICKUP, 8.1 G, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSOEM CONNECTOR END VIEWSENGINE ELECTRICAL CONNECTOR END VIEWSHYBRID CONTROL MODULE CONNECTOR END VIEW(HCM)
2006 Chevrolet Cab & Chassis Silverado 2D Pickup, 8.1 G, 4WD, Automatic
Hybrid Control Module Connector End View(HCM)
2006 Chevrolet Cab & Chassis Silverado 2D Pickup, 8.1 G, 4WD, AutomaticSECTION Hybrid Control Module Connector End View(HCM)
Hybrid Control Module (HCM) (HP2)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | OG | 1940 | Battery Positive Voltage |
| 2 | PK | 1020 | Ignition 0 Voltage |
| 3-7 | - | - | Not Used |
| 8 | PK/BK | 109 | Hood Ajar Switch Signal |
| 9 | PU | 5681 | APO Switch Signal |
| 10-11 | - | - | Not Used |
| 12 | PK | 1939 | Ignition 1 Voltage |
| 13-27 | - | - | Not Used |
| 28 | PU/WH | 5687 | Class 2 Serial Data |
| 29 | BK/WH | 451 | Ground |
| 30-33 | - | - | Not Used |
| 34 | OG/BK | 1057 | Low Reference |
| 35-39 | - | - | Not Used |
| 40 | TN/WH | 2500 | High Speed GMLAN Serial Data (+) |
| 41 | TN | 2501 | High Speed GMLAN Serial Data (-) |
| 42 | - | - | Not Used |
| 43 | BK/WH | 451 | Ground |
| 44 | - | - | Not Used |
| 45 | YE | 5680 | APO Switch Indicator Control |
| 46-47 | - | - | Not Used |
| 48 | PK/WH | 5537 | Transmission Pump Relay Control |
| 49 | PU/WH | 5539 | Power Maintain Relay Coil Control |
| 50 | - | - | Not Used |
| 51 | WH | 5542 | Auxiliary Heater Pump Relay Control |
| 52 | BN/WH | 5682 | Low Reference |
| 53 | - | - | Not Used |
| 54 | TN/WH | 2500 | High Speed GMLAN Serial Data (+) |
| 55 | TN | 2501 | High Speed GMLAN Serial Data (-) |
| 56 | - | - | Not Used |
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.