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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 41 (ENGINE CONTROLS - 4.3L - COMPONENT LOCATOR)COMPONENT LOCATORPOWERTRAIN CONTROL MODULE CONNECTOR END VIEWSPOWERTRAIN CONTROL MODULE (PCM) - C1
2001 Chevrolet Suburban C1500

Powertrain Control Module (PCM) - C1

2001 Chevrolet Suburban C1500SECTION Powertrain Control Module (PCM) - C1
WARNING: This page is about a different car, the 2001 GMC Sierra and 2001 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) - C1

GM655733
Connector Part Information
  • 12191489
  • 80-Way F Micro-Pack 100W Sealed (NAT)
Pin Wire Color Circuit No. Function
1 BLK/WHT 451 Ground
2 LT GRN 1867 12 Volt Reference
3 - - Not Used
4 LT BLU/BLK 844 Fuel Injector 4 Control
5 - - Not Used
6 7 - - Not Used
8 GRY 416 5 Volt Reference
9 DK BLU 496 KS [1] Signal
10 YEL 2361 CAN Serial Data High
11 - - Not Used
12 DK BLU/WHT 1869 CKP Sensor Signal
13 16 - - Not Used
17 DK BLU 1225 Transmission Fluid Pressure Switch Signal B
18 RED 1226 Transmission Fluid Pressure Switch Signal C
19 PNK 439 Ignition 1 Voltage
20 ORN 440 Battery Positive Voltage
21 YEL/BLK 1868 Low Reference
22 - - Not Used
23 BLK 470 Low Reference
24 - - Not Used
25 TAN 1671 HO2S Low Signal [ Bank 2 Sensor 2]
26 TAN 1667 HO2S Low Signal [Bank 2 Sensor 1]
27 - - Not Used
28 TAN/WHT 1669 HO2S Low Signal [Bank 1 Sensor 2]
29 TAN/WHT 1653 HO2S Low Signal [Bank 1 Sensor 1]
30 LT GRN 1478 Coolant Level Switch Signal
31 - - Not Used
32 BLK/WHT 771 Transmission Range Switch Signal A
33 PPL 420 TCC Brake Switch Signal
34 WHT 776 Transmission Range Switch Signal P
35 GRY 48 CPP Switch Signal
36 BLK 1744 Fuel Injector 1 Control
37 PNK/BLK 1746 Fuel Injector 3 Control
38 39 - - Not Used
40 BLK/WHT 451 Ground
41 PPL 719 Low Reference
42 - - Not Used
43 BLK/WHT 845 Fuel Injector 5 Control
44 45 - - Not Used
46 GRY 474 5 Volt Reference
47 GRY 596 5 Volt Reference
48 GRY 597 5 Volt Reference
49 GRY 1716 KS [1] Return
50 52 - - Not Used
53 BLK 407 Low Reference
54 ORN/BLK 469 Low Reference
55 BRN 1456 EGR Valve Position Signal
56 - - Not Used
57 ORN 440 Battery Positive Voltage
58 DK GRN 1049 ECM/PCM/VCM Class 2 Serial Data
59 YEL 710 Class 2 Serial Data
60 ORN/BLK 510 Low Reference
61 PNK/BLK 632 Low Reference
62 - - Not Used
63 BLK 452 Low Reference
64 - - Not Used
65 PPL 1670 HO2S High Signal [Bank 2 Sensor 2]
66 PPL 1666 HO2S High Signal [Bank 2 Sensor 1]
67 - - Not Used
68 PPL/WHT 1668 HO2S High Signal [Bank 1 Sensor 2]
69 PPL/WHT 1665 HO2S High Signal [Bank 1 Sensor 1]
70 BRN 1174 Oil Level Switch Signal
71 - - Not Used
72 YEL 772 Transmission Range Switch Signal B
73 BRN/WHT 633 CMP Sensor Signal
74 YEL 410 ECT Sensor Signal
75 PNK 1020 Off/Run/Crank Voltage
76 LT GRN/BLK 1745 Fuel Injector 2 Control
77 YEL/BLK 846 Fuel Injector 6 Control
78 - - Not Used
79 WHT 687 3-2 Shift Solenoid Valve Control
80 GRY 720 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.