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PCM PINOUTS below submitted from a customer. sometime around 2004 gm changed colors on some wires, so you could see red/white for constant hot instead of orange. Also some low reference wires maybe a different color. 2006 Chevy express van Powertrain Control Module (PCM) Blue C1
Wire Color Circuit No. Function
1 BLACK/WHITE, 1551, Ground 2 LIGHT GREEN, 1867, 12-Volt Reference 3 PINK/BLACK, 1746, Fuel Injector 3 Control 4 LIGHT GREEN/BLACK, 1745, Fuel Injector 2 Control 5-6 Not Used
7 8 GREY, 2701, 5-Volt Reference 1 (w/o JL4 - DBC applications) 9-10 Not Used 11 LIGHT BLUE, 1876, Knock Sensor 2 Signal 12 YELLOW, 573, CKP Sensor Signal
13, 14 ORANGE/BLACK, 1061, UART Serial Data (w/JL4 - DBW applications) 15 DARK BLUE/WHITE, 774, UART Serial Data (w/JL4 - DBW applications) 16 Not Used 17 DARK BLUE, 1225, Transmission Fluid Pressure Switch Signal B 18 ORANGE, 1226, Transmission Fluid Pressure Switch Signal C 19 PINK, 439, Ignition 1 Voltage (PCM) 20 RED/WHITE, 440, Battery Positive Voltage 21 PURPLE, 574, Low Reference 22 Not Used
23 24 BLACK/WHITE, 1551, Ground
25 26 TAN, 1667, HO2S Low Signal - Bank 2 Sensor 1 27 BLACK/WHITE, 1551, Ground
28 29 TAN, 1664, HO2S Low Signal - Bank 1 Sensor 1 30-31 NOT USED 32 TAN/WHITE, 771, Transmission Range Switch Signal A 33 PURPLE, 420, TCC Brake Switch/Cruise Control Release Signal 34 WHITE, 776, Transmission Range Switch Signal P 35 Not Used 36 TAN, 1744, Fuel Injector 1 Control 37 YELLOW/BLACK, 846, Fuel Injector 6 Control 38 Not Used
39 40 BLACK/WHITE, 1551, Ground
41 42 electric fan 1 43 ORANGE/BLACK, 877, Fuel Injector 7 Control 44 LIGHT BLUE/BLACK, 844, Fuel Injector 4 Control 45 Not Used
46
47 48 GREY, 597, 5-Volt Reference 1 49-50 Not Used 51 DARK BLUE, 496, KS 1 Signal 52 Not Used 53 TAN, 2762, Low Reference 54 ORANGE/BLACK, 469, Low Reference
55 56 Not Used 57 RED/WHITE, 440, Battery Positive Voltage 58 DARK GREEN, 1049, Class 2 Serial Data
59 60 TAN, 2752, Low Reference (w/o JL4 - DBC) 61 PINK/BLACK, 632, Low Reference 62 Not Used
63 64 BLACK/WHITE, 1551, Ground
65 66 PURPLE, 1666, HO2S High Signal - Bank 2 Sensor 1 67 BLACK/WHITE, 1551, Ground
68 69 PURPLE/WHITE, 1665, HO2S High Signal - Bank 1 Sensor 1
70 71 Not Used 72 YELLOW, 772, Transmission Range Switch Signal B 73 BROWN/WHITE, 633, CMP Sensor Signal 74 YELLOW, 410, ECT Sensor Signal 75 PINK, 1020, Ignition Voltage (PCM) 76 TAN/WHITE, 845, Fuel Injector 5 Control 77 DARK BLUE/WHITE, 878, Fuel Injector 8 Control 78 Not Used 79 WHITE, 687, 3-2 Shift Solenoid Valve Control (5.3L) 80 TAN, 2761, Low Reference ECT SENSOR
Powertrain Control Module (PCM) Green C2
1 BLACK/WHITE, 1551, Ground 2 BROWN, 418, TCC PWM Solenoid Valve Control 3-4 Not Used
5 6 ORANGE/BLACK, 1228, PC Solenoid Valve High Control
7 8 LIGHT BLUE/WHITE, 1229, PC Solenoid Valve Low Control 9 DARK GREEN/WHITE, 465, Fuel Pump Relay Control - Primary 10 WHITE TACH 11-12 Not Used
13
14 15 ORANGE, 225, Generator Turn On Signal 16 Not Used
17 18-19 Not Used 20 PURPLE, 401, Signal Low - Front 21 YELLOW, 400, Signal High - Front 22 ORANGE/BLACK, 1230, AT ISS High Signal (4L80-E/4L85-E) 23 DARK BLUE/WHITE, 1231, AT ISS Low Signal (4L80-E/4L85-E) 24 DARK BLUE, 411, TP Sensor Signal (w/o JL4) 25 TAN, 472, IAT Sensor Signal 26 PURPLE, 2121, IC 1 Control 27 ORANGE, 2127, IC 7 Control 28 LIGHT BLUE/WHITE, 2126, IC 6 Control 29 DARK GREEN/WHITE, 2124, IC 4 Control 30 Not Used 31 YELLOW, 492, MAF Sensor Signal 32 LIGHT GREEN , 432, MAP Sensor Signal 33 Electric fan 2
34 35-36 Not Used
37 38 Not Used 39 ORANGE, 631, 12-Volt Reference 40 BLACK/WHITE, 1551, Ground
41 42 TAN/BLACK, 422, TCC Solenoid Valve Control (5.3L)
43 44 Not Used
45 46 BROWN/WHITE, 419, MIL Control 47 YELLOW/BLACK, 1223, 2-3 Shift Solenoid Valve Control 48 LIGHT GREEN, 1222, 1-2 Shift Solenoid Valve Control
49 50 DARK GREEN/WHITE, 817, Vehicle Speed Signal (w/o JL4) 51 YELLOW/BLACK, 1227, TFT Sensor Signal
52
53
54
55 56 Not Used 57 TAN, 470, Low Reference
58
59 60 BROWN, 2129, Low Reference 61 BROWN/WHITE, 2130, Low Reference 62 GREY, 773, Transmission Range Switch Signal C 63 PINK, 1224, Transmission Fluid Pressure Switch Signal A
64 65 Not Used 66 PURPLE/WHITE, 2128, IC 8 Control 67 ORANGE/WHITE, 2122, IC 2 Control 68 DARK GREEN, 2125, IC 5 Control 69 LIGHT BLUE, 2123, IC 3 Control 70-71 Not Used 72 LIGHT BLUE, 5038, HO2S Heater Low Control - Bank 1 Sensor 1
73 74 PURPLE/WHITE, 5037, HO2S Heater Low Control - Bank 2 Sensor 1 75 GREY, 23, Generator Field Duty Cycle Signal 76 LIGHT GREEN/WHITE, 1749, IAC Coil B High Control (w/o JL4) 77 LIGHT GREEN/BLACK, 444, IAC Coil B Low Control (w/o JL4) 78 LIGHT BLUE/BLACK, 1748, IAC Coil A Low Control (w/o JL4) 79 LIGHT BLUE/WHITE, 1747, IAC Coil A High Control (w/o JL4)
80
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