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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 678 (ENGINE CONTROLS - 4.3L - INTRODUCTION (2 OF 2))COMPONENT LOCATORPOWERTRAIN CONTROL MODULE (PCM) CONNECTOR END VIEWSPOWERTRAIN CONTROL MODULE (PCM) - C1
2006 Chevrolet Suburban C1500, 5.3 Z

Powertrain Control Module (PCM) - C1

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Powertrain Control Module (PCM) - C1
WARNING: This page is about a different car, the 2006 GMC Sierra and 2006 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) - C1

GM73173Courtesy of GENERAL MOTORS CORP.
Connector Part Information 
  • OEM: 12191110
  • Service: See Catalog
  • Description: 80-Way F Micro-Pack 100 Series Sealed (BU)
Pin  Wire Color  Circuit No.  Function 
1 BK/WH 451 Ground
2 L-GN 1867 12-Volt Reference
3 - - Not Used
4 L-BU/BK 844 Fuel Injector 4 Control
5-6 - - Not Used
7 GY 2705 5-Volt Reference
8 GY 2701 5-Volt Reference
9 D-BU 496 Knock Sensor Signal
10-11 - - Not Used
12 D-BU/
WH		 1869 CKP Sensor Signal
13-16 - - 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 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 PK/BK 1746 Fuel Injector 3 Control
38 - - Not Used
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
43 BK/WH 845 Fuel Injector 5 Control
44 - - Not Used
45 GY 2700 5-Volt Reference
46 GY 474 5-Volt Reference
47 - - Not Used
48 GY 597 5-Volt Reference
49 GY 1716 Low Reference
50-52 - - Not Used
53 BK 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 - - Not Used
60 BK 2752 Low Reference
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
70-71 - - 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 L-GN/BK 1745 Fuel Injector 2 Control
77 YE/BK 846 Fuel Injector 6 Control
78 - - Not Used
79 WH 687 3-2 Shift Solenoid Valve Control (A/T)
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.