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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 659 (ENGINE CONTROLS - 4.8L, 5.3L, AND 6.0L - INTRODUCTION (2 OF 2))COMPONENT LOCATORPOWERTRAIN CONTROL MODULE (PCM) CONNECTORSPOWERTRAIN CONTROL MODULE (PCM) C1
2006 Chevrolet Suburban C2500, 6.0 U
Powertrain Control Module (PCM) C1
2006 Chevrolet Suburban C2500, 6.0 USECTION Powertrain Control Module (PCM) C1
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.
Powertrain Control Module (PCM) Connector End Views
Connector Part Information
|
Powertrain Control Module (PCM) C1
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | BK/WH | 451 | Ground |
| 2 | L-GN | 1867 | 12-Volt Reference |
| 3 | PK/BK | 1746 | Fuel Injector 3 Control |
| 4 | L-GN/BK | 1745 | Fuel Injector 2 Control |
| 5-6 | - | - | Not Used |
| 7 | GY | 2705 | 5-Volt Reference |
| 8-10 | - | - | Not Used |
| 11 | L-BU | 1876 | Knock Sensor 2 Signal |
| 12 | D-BU/WH | 1869 | CKP Sensor Signal |
| 13 | OG/BK | 463 | Requested Torque Signal (NW7) |
| 14 | OG/BK | 1061 | UART Serial Data |
| 15 | D-BU/WH | 774 | UART Serial Data |
| 16 | - | - | Not Used |
| 17 | D-BU | 1225 | Transmission Fluid Pressure Switch Signal B (A/T) |
| 18 | RD | 1226 | Transmission Fluid Pressure Switch Signal C (A/T) |
| 19 | PK | 439 | Ignition 1 Voltage |
| 20 | OG | 440 | Battery Positive Voltage |
| 21 | YE/BK | 1868 | Low Reference |
| 22 | - | - | Not Used |
| 23 | BK | 470 | Low Reference |
| 24 | BK/WH | 451 | Ground |
| 25 | TN | 1671 | HO2S Low Signal - Bank 2 Sensor 2 |
| 26 | TN | 1667 | HO2S Low Signal - Bank 2 Sensor 1 |
| 27 | BK/WH | 451 | Ground |
| 28 | TN/WH | 1669 | HO2S Low Signal - Bank 1 Sensor 2 |
| 29 | TN | 1664 | HO2S Low Signal - Bank 1 Sensor 1 |
| 30-31 | - | - | Not Used |
| 32 | BK/WH | 771 | Transmission Range Switch Signal A (A/T) |
| 33 | PU | 420 | TCC Brake Switch/Cruise Control Release Switch Signal |
| 34 | WH | 776 | Transmission Range Switch Signal P (A/T) |
| 35 | GY | 48 | CPP Switch Signal (M/T) |
| 36 | BK | 1744 | Fuel Injector 1 Control |
| 37 | YE/BK | 846 | Fuel Injector 6 Control |
| 38 | PK/WH | 1101 | Damping Lift/Dive Signal (Except HVY) |
| 39 | YE/BK | 625 | Starter Enable Relay Control |
| 40 | BK/WH | 451 | Ground |
| 41 | - | - | Not Used |
| 42 | D-GN | 335 | Low Speed Cooling Fan Relay Control (10 Series) |
| 43 | RD/BK | 877 | Fuel Injector 7 Control |
| 44 | L-BU/BK | 844 | Fuel Injector 4 Control |
| 45 | GY | 2700 | 5-Volt Reference (A/C) |
| 46 | GY | 474 | 5-Volt Reference |
| 47 | - | - | Not Used |
| 48 | GY | 597 | 5-Volt Reference |
| 49-50 | - | - | Not Used |
| 51 | D-BU | 496 | Knock Sensor 1 Signal |
| 52 | - | - | Not Used |
| 53 | GY | 720 | Low Reference (A/T) |
| 54 | OG/BK | 469 | Low Reference |
| 55-56 | - | - | Not Used |
| 57 | OG | 440 | Battery Positive Voltage |
| 58 | D-GN | 1049 | Class 2 Serial Data |
| 59-60 | - | - | Not Used |
| 61 | PK/BK | 632 | Low Reference |
| 62 | - | - | Not Used |
| 63 | BK | 2755 | Low Reference |
| 64 | BK/WH | 451 | Ground |
| 65 | PU | 1670 | HO2S High Signal - Bank 2 Sensor 2 |
| 66 | PU | 1666 | HO2S High Signal - Bank 2 Sensor 1 |
| 67 | BK/WH | 451 | Ground |
| 68 | PU/WH | 1668 | HO2S High Signal - Bank 1 Sensor 2 |
| 69 | PU/WH | 1665 | HO2S High Signal - Bank 1 Sensor 1 |
| 70 | BN | 1174 | Oil Level Switch Signal |
| 71 | - | - | Not Used |
| 72 | YE | 772 | Transmission Range Switch Signal B (A/T) |
| 73 | BN/WH | 633 | CMP Sensor Signal |
| 74 | YE | 410 | ECT Sensor Signal |
| 75 | PK | 1020 | Ignition 0 Voltage |
| 76 | BK/WH | 845 | Fuel Injector 5 Control |
| 77 | D-BU/WH | 878 | Fuel Injector 8 Control |
| 78 | - | - | Not Used |
| 79 | WH | 687 | 3-2 Shift Solenoid Valve Control (M30/M32/M33) |
| 80 | BK | 407 | Low Reference |
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.