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 MANUALSCHEVROLET2006CAB & CHASSIS SILVERADO 2D PICKUP, 8.1 G, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALBODY ELECTRICALOEM CONNECTOR END VIEWSHVAC CONNECTOR END VIEWSHVAC CONTROL MODULE CONNECTOR END VIEWS
2006 Chevrolet Cab & Chassis Silverado 2D Pickup, 8.1 G, 4WD, Automatic
HVAC Control Module Connector End Views
2006 Chevrolet Cab & Chassis Silverado 2D Pickup, 8.1 G, 4WD, AutomaticSECTION HVAC Control Module Connector End Views
HVAC Control Module - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | D-GN | 1614 | Recirculation Door Control |
| A2 | D-BU | 1646 | Right Air Temperature Door Position Signal |
| A3 | L-BU | 733 | Left Air Temperature Door Position Signal |
| A4 | - | - | Not Used |
| A5 | L-GN | 2275 | Mode Door Position Signal |
| A6 | - | - | Not Used |
| A7 | BN/WH | 230 | Instrument Panel Lamps Dimming Control |
| A8 | BK/WH | 1851 | Ground |
| A9-A11 | - | - | Not Used |
| A12 | D-BU | 204 | A/C Low Pressure Sensor Signal |
| B1 | WH/BK | 1236 | Right Air Temperature Door Control |
| B2 | D-BU | 1199 | Left Air Temperature Door Control |
| B3 | - | - | Not Used |
| B4 | TN | 2273 | Mode Door Control |
| B5 | BN | 341 | Ignition 3 Voltage |
| B6 | YE | 1791 | Low Reference |
| B7 | OG | 4340 | Battery Positive Voltage |
| B8 | L-BU/BK | 1688 | 5-Volt Reference |
| B9 | BK | 1050 | Ground |
| B10 | - | - | Not Used |
| B11 | WH | 1038 | HVAC Class 2 Serial Data |
| B12 | - | - | Not Used |
HVAC Control Module - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | D-GN | 734 | Inside Air Temperature Sensor Signal |
| B | L-GN/BK | 735 | Ambient Air Temperature Sensor Signal |
| C | WH | 2338 | Upper Left Air Temperature Sensor Signal |
| D | GY | 2336 | Upper Right Air Temperature Sensor Signal |
| E | WH/BK | 2339 | Lower Left Air Temperature Sensor Signal |
| F | GY/BK | 2337 | Lower Right Air Temperature Sensor Signal |
| G | PU | 1838 | Recirculation Door Position Signal |
| H-J | - | - | Not Used |
| K | BN | 718 | Low Reference |
| L | WH/BK | 5515 | Inside Air Temperature Sensor Assembly Control |
| M | PU/WH | 760 | Blower Motor Speed Control |
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:
- 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.