Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Powertrain Control Module (PCM)

Imprimir



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Fig. 2003-05 C1 CONNECTOR

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2LT GRN186712 Volt Reference
3PNK/BLK1746Fuel Injector 3 Control
4LT GRN/BLK1745Fuel Injector 2 Control
5-6----Not Used
7GRY27055 Volt Reference
8-10----Not Used
11LT BLU1876Knock Sensor 2 Signal
12DK BLU/WHT1869CKP Sensor Signal
13ORN/BLK463Requested Torque Signal (NW7)
14ORN/BLK1061UART Serial Data
15DK BLU/WHT774UART Serial Data
16----Not Used
17DK BLU1225Transmission Fluid Pressure Switch Signal B (A/T)
18RED1226Transmission Fluid Pressure Switch Signal C (A/T)
19PNK439Ignition 1 Voltage
20ORN440Battery Positive Voltage
21YEL/BLK1868Low Reference
22----Not Used
23BLK470Low Reference
24BLK/WHT451Ground
25TAN1671HO2S Low Signal - Bank 2 Sensor 2
26TAN1667HO2S Low Signal - Bank 2 Sensor 1
27BLK/WHT451Ground
28TAN/WHT1669HO2S Low Signal - Bank 1 Sensor 2
29TAN1664HO2S Low Signal - Bank 1 Sensor 1
30LT GRN1478Coolant Level Switch Signal
31----Not Used
32BLK/WHT771Transmission Range Switch Signal A (A/T)
33PPL420TCC Brake Switch/Cruise Control Release Switch Signal
34WHT776Transmission Range Switch Signal P (A/T)
35GRY48CPP Switch Signal (M/T)
36BLK1744Fuel Injector 1 Control
37YEL/BLK846Fuel Injector 6 Control
38PNK/WHT1101Damping Lift/Dive Signal
39YEL/BLK625Starter Enable Relay Control
40BLK/WHT451Ground
41-42----Not Used
43RED/BLK877Fuel Injector 7 Control
44LT BLU/BLK844Fuel Injector 4 Control
45GRY27005 Volt Reference (A/C)
46GRY4745 Volt Reference (EVA)
47----Not Used

2003-05 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (1 of 2)

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Fig. 2003-05 C1 CONNECTOR (Continued)

PinWire ColorCircuit No.Function
48GRY5975 Volt Reference
49-50----Not Used
51DK BLU496Knock Sensor 1 Signal
52----Not Used
53GRY720Low Reference (A/T)
54ORN/BLK469Low Reference
55----Not Used
56WHT1579Fuel Temperature/Composition Signal (L59)
57ORN440Battery Positive Voltage
58DK GRN1049Class 2 Serial Data
59YEL710Class 2 Serial Data
60----Not Used
61PNK/BLK632Low Reference
62----Not Used
63BLK2755Low Reference
64BLK/WHT451Ground
65PPL1670HO2S High Signal - Bank 2 Sensor 2
66PPL1666HO2S High Signal - Bank 2 Sensor 1
67BLK/WHT451Ground
68PPL/WHT1668HO2S High Signal - Bank 1 Sensor 2
69PPL/WHT1665HO2S High Signal - Bank 1 Sensor 1
70BRN1174Oil Level Switch Signal
71----Not Used
72YEL772Transmission Range Switch Signal B (A/T)
73BRN/WHT633CMP Sensor Signal
74YEL410ECT Sensor Signal
75PNK1020Off/Run/Crank Voltage
76BLK/WHT845Fuel Injector 5 Control
77DK BLU/WHT878Fuel Injector 8 Control
78----Not Used
79WHT6873-2 Shift Solenoid Valve Control (M30/M32)
80BLK407Low Reference

2003-05 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (2 of 2)

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Fig. 2003-05 C2 CONNECTOR

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2BRN418TCC PWM Solenoid Valve Control (A/T)
3TAN1465Fuel Pump Relay Control - Secondary (Dual Tanks)
4----Not Used
5TAN/BLK464Delivered Torque Signal (NW7)
6RED/BLK1228PC Solenoid Valve High Control (A/T)
7----Not Used
8LT BLU/WHT1229PC Solenoid Valve Low Control (A/T)
9DK GRN/WHT465Fuel Pump Relay Control - Primary
10WHT121Engine Speed Signal
11-13----Not Used
14RED/BLK380A/C Refrigerant Pressure Sensor Signal (A/C)
15BRN25Charge Indicator Control
16GRY/BLK16944WD Low Signal
17----Not Used
18DK GRN1433Clutch Start Switch Signal (M/T)
19BLK/WHT1695Axle Switch Signal (NP2)
20LT GRN/BLK822VSS Low Signal
21PPL/WHT821VSS High Signal
22RED/BLK1230AT ISS High Signal (4WD w/MT1)
23DK BLU/WHT1231AT ISS Low Signal (4WD w/MT1)
24----Not Used
25TAN472IAT Sensor Signal
26PPL2121IC 1 Control
27RED2127IC 7 Control
28LT BLU/WHT2126IC 6 Control
29DK GRN/WHT2124IC 4 Control
30----Not Used
31YEL492MAF Sensor Signal
32LT GRN432MAP Sensor Signal
33----Not Used
34DK GRN/WHT428EVAP Canister Purge Solenoid Control
35-38----Not Used
39RED63112 Volt Reference
40BLK/WHT451Ground
41----Not Used
42TAN/BLK422TCC Solenoid Valve Control (M30/M32)
43DK GRN/WHT459A/C Compressor Clutch Relay Control (A/C)
44----Not Used
45WHT1310EVAP Canister Vent Solenoid Control (EVA)
46BRN/WHT419MIL Control
47YEL/BLK12232-3 Shift Solenoid Valve Control (A/T)

2003-05 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (1 of 2)

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Fig. 2003-05 C2 CONNECTOR (CONTINUED)

PinWire ColorCircuit No.Function
48LT GRN12221-2 Shift Solenoid Valve Control (A/T)
49YEL/BLK1827Vehicle Speed Signal
50DK GRN/WHT817Vehicle Speed Signal
51YEL/BLK1227TFT Sensor Signal (A/T)
52BRN2391HO2S Heater Low Control Bank 1 Sensor 2
53RED/WHT3223HO2S Heater Low Control Bank 2 Sensor 2
54PPL1589Fuel Level Sensor Signal - Primary
55-56----Not Used
57BLK552Low Reference
58TAN/WHT332Oil Pressure Sensor Signal
59PPL806Crank Voltage
60BRN2129Low Reference
61BRN/WHT2130Low Reference
62GRY773Transmission Range Switch Signal C (A/T)
63PNK1224Transmission Fluid Pressure Switch Signal A (A/T)
64DK GRN890Fuel Tank Pressure Sensor Signal (EVA)
65----Not Used
66PPL/WHT2128IC 8 Control
67RED/WHT2122IC 2 Control
68DK GRN2125IC 5 Control
69LT BLU2123IC 3 Control
70-71----Not Used
72BLK/WHT3113HO2S Heater Low Control Bank 1 Sensor 1
73DK BLU1936Fuel Level Sensor Signal - Secondary
74LT GRN3212HO2S Heater Low Control Bank 2 Sensor 1
75GRY23Generator Field Duty Cycle Signal
76-79----Not Used
80BLK2751Low Reference (A/C)

2003-05 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (2 of 2)



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Fig. 2000 C1 CONNECTOR

PinWire ColorCircuit No.Function
1BLK/WHT451PCM Ground
2LT GRN1867Crankshaft Position Sensor B+ Supply
3PNK/BLK1746Injector 3 Control
4LT GRN/BLK1745Injector 2 Control
5-10----Not Used
11LT BLU1876Knock Sensor Signal Rear
12DK BLU/WHT1869Crankshaft Position Sensor Signal
13-16----Not Used
17DK BLU1225Transmission Range Signal B
18RED1226Transmission Range Signal C
19PNK439PCM Ignition Supply
20ORN440PCM Battery Supply
21YEL/BLK1868Crankshaft Position Sensor Ground
22----Not Used
23PPL719Sensor Ground
24----Not Used
25TAN1671HO2S Signal Low Bank 2 Sensor 2
26TAN1667HO2S Signal Low Bank 2 Sensor 1
27----Not Used
28TAN/WHT1669HO2S Signal Low Bank 1 Sensor 2
29TAN/WHT1653HO2S Signal Low Bank 1 Sensor 1
30LT GRN1478Engine Coolant Level Switch
31----Not Used
32BLK/WHT771PRND A Input
33PPL420TCC Brake Switch
34WHT776PRND P Input
35GRA48Clutch Switch Signal
36BLK1744Injector 1 Control
37YEL/BLK846Injector 6 Control
38-39----Not Used
40BLK/WHT451PCM Ground
41BLK407Sensor Ground
42----Not Used
43RED/BLK877Injector 7 Control
44LT BLU/BLK844Injector 4 Control
45GRA474Fuel Tank Pressure Sensor 5V Reference
46GRA416TP Sensor 5V Reference
47GRA597MAP Sensor 5V Reference
48GRA596EGR Pintle Position Sensor 5V Reference
49-50----Not Used
51DK BLU496Knock Sensor Signal Front
52----Not Used
53BLK470Fuel Tank Pressure Sensor Ground
54BLK452TP Sensor Ground
55BRN1456EGR Pintle Position Sensor Signal

2000 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (1 of 2)

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Fig. 2000 C1 CONNECTOR (continued)

PinWire ColorCircuit No.Function
56----Not Used
57ORN440PCM Battery Supply
58DK GRN1049Serial Data
59YEL710Serial Data
60ORN/BLK469MAP Sensor Ground
61PNK/BLK632CMP Sensor Ground
62----Not Used
63GRA720Engine Coolant Temperature (ECT) Sensor Ground
64----Not Used
65PPL1670HO2S Signal High Bank 2 Sensor 2
66PPL1666HO2S Signal High Bank 2 Sensor 1
67----Not Used
68PPL/WHT1668HO2S Signal High Bank 1 Sensor 2
69PPL/WHT1665HO2S Signal High Bank 1 Sensor 1
70BRN1174Low Oil Level Switch
71----Not Used
72YEL772PRND B Input
73BRN/WHT633Camshaft Position (CMP) Sensor Signal
74YEL410Engine Coolant Temperature (ECT) Sensor Signal
75PNK1020PCM Ignition Supply
76BLK/WHT845Injector 5 Control
77DK BLU/WHT878Injector 8 Control
78----Not Used
79WHT6873-2 Shift Solenoid Control
80ORN/BLK510Fuel Level Sensor Ground

2000 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (2 of 2)

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Fig. 2000 C2 Connector

PinWire ColorCircuit No.Function
1BLK/WHT451PCM Ground
2BRN418TCC Control Solenoid
3-5----Not Used
6RED/BLK1228Transmission Fluid Pressure Control Solenoid High
7RED1676EGR Solenoid Supply

2000 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (1 of 3)

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Fig. 2000 C2 Connector (Continued)

PinWire ColorCircuit No.Function
8LT BLU/WHT1229Transmission Fluid Pressure Control Solenoid Low
9DK GRN/WHT465Fuel Pump Relay Control
10WHT121Engine Speed (Tach) Output Signal
11DK BLU604Secondary A/C High Pressure Switch
12----Not Used
13LT BLU/BLK396Cruise Control Engage Signal
14----Not Used
15BRN25Generator L Terminal
16GRA/BLK16944 Wheel Drive Switch Signal Low
17DK GRN/WHT762A/C Request Signal
18----Not Used
19BLK/WHT16954 Wheel Drive Front Axle Switch
20LT GRN/BLK822Vehicle Speed Sensor (VSS) Reference Low
21PPL/WHT821Vehicle Speed Sensor (VSS) Signal
22RED/BLK1230Vehicle Speed Sensor (VSS) Signal (6.0L Only)
23DK BLU/WHT1231Vehicle Speed Sensor (VSS) Reference Low (6.0L Only)
24DK BLU417TP Sensor Signal
25TAN472IAT Sensor Signal
26PPL2121Ignition Control 1
27RED2127Ignition Control 7
28LT BLU/WHT2126Ignition Control 6
29DK GRN/WHT2124Ignition Control 4
30----Not Used
31YEL492MAF Sensor Signal
32LT GRN432MAP Sensor Signal
33DK GRN1614HVAC Recirculation Door Control
34DK GRN/WHT428EVAP Canister Purge Solenoid Control
35----Not Used
36BRN436AIR Pump Relay Control (w/NC1)
37-38----Not Used
39RED631CMP Sensor B+ Supply
40BLK/WHT451PCM Ground
41WHT257EGR Solenoid Ground
42TAN/BLK422TCC Enable Circuit (4L60-E only)
43DK GRN/WHT459A/C Clutch Relay Control
44----Not Used
45WHT1310EVAP Canister Vent Valve Control
46BRN/WHT419Malfunction Indicator Lamp (MIL) Control
47YEL/BLK1223Transmission Shift Solenoid B
48LT GRN1222Transmission Shift Solenoid A
49YEL/BLK1827Vehicle Speed Output Circuit 128K
50DK GRN/WHT817Vehicle Speed Output Circuit 4K

2000 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (2 of 3)

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Fig. 2000 C2 Connector (Continued)

PinWire ColorCircuit No.Function
51YEL/BLK1227Transmission Temperature Sensor Signal
52-53----Not Used
54PPL1589Fuel Level Sensor Signal
55DK GRN603A/C Compressor Cycling Switch Signal
56----Not Used
57BLK552IAT Sensor Ground
58-59----Not Used
60BRN2129Ignition Control Reference Low Bank 1
61BRN/WHT2130Ignition Control Reference Low Bank 2
62GRA773PRND C
63PNK1224Transmission Range Signal A
64DK GRN890Fuel Tank Pressure Sensor Signal
65----Not Used
66PPL/WHT2128Ignition Control 8
67RED/WHT2122Ignition Control 2
68DK GRN2125Ignition Control 5
69LT BLU2123Ignition Control 3
70-75----Not Used
76LT GRN/WHT1749IAC Coil B High
77LT GRN/BLK444IAC Coil B Low
78LT BLU/BLK1748IAC Coil A Low
79LT BLU/WHT1747IAC Coil A High
80----Not Used

2000 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (3 of 3)

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Fig. 2001-02 C1 Connector

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2LT GRN186712 Volt Reference
3PNK/BLK1746Fuel Injector 3 Control
4LT GRN/BLK1745Fuel Injector 2 Control
5-10----Not Used
11LT BLU1876Knock Sensor 2 Signal
12DK BLU/WHT1869CKP Sensor Signal
13ORN/BLK463Requested Torque Signal
14ORN/BLK1061UART Serial Data [Secondary]
15DRK BLU/WHT774UART Serial Data [Tertiary]
16----Not Used
17DK BLU1225Transmission Fluid Pressure Switch Signal B
18RED1226Transmission Fluid Pressure Switch Signal C
19PNK439Ignition 1 Voltage
20ORN440Battery Positive Voltage
21YEL1868Low Reference
22----Not Used
23PPL719Low Reference
24----Not Used
25TAN1671HO2S Low Signal [- Bank 2 Sensor 1]
25TAN413HO2S Low Reference (Denso Sensors) HO2S Low Signal (Delphi Sensors)
26TAN1667HO2S Low Signal [- Bank 2 Sensor 2]
26TAN413HO2S Low Reference (Denso Sensors) HO2S Low Signal (Delphi Sensors)
27----Not Used
28TAN/WHT1669HO2S Low Signal [- Bank 1 Sensor 2]
28TAN413HO2S Low Reference (Denso Sensors) HO2S Low Signal (Delphi Sensors)
29TAN/WHT1653HO2S Low Signal [- Bank 1 Sensor 1]
29TAN413HO2S Low Reference (Denso Sensors) HO2S Low Signal (Delphi Sensors)
30LT GRN1478Coolant Level Switch Signal
31----Not Used
32BLK/WHT771Transmission Range Switch Signal A
33PPL420TCC Brake Switch Signal
34WHT776Transmission Range Switch Signal P
35GRA48CPP Switch Signal
36BLK1744Injector 1 Control
37YEL/BLK846Injector 6 Control
38PNK/WHT1101Damping Lift/Dive Signal
39----Not Used
40BLK/WHT451Ground

2001-02 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (1 of 2)

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Fig. 2001-02 C1 Connector (Continued)

PinWire ColorCircuit No.Function
41BLK407Low Reference
41GRA720Low Reference (w/o Delphi HO2S)
42----Not Used
43RED/BLK877Fuel Injector 7 Control
44LT BLU/BLK844Fuel Injector 4 Control
45GRA4745 Volt Reference (FTP Sensor)
46GRY4745 Volt Reference (TPS Sensor)
47GRY5975 Volt Reference (MAP Sensor)
48GRA5965 Volt Reference (EGR Sensor)
4950----Not Used
51DK BLU496KS [1] Signal
52----Not Used
53BLK470Low Reference
54BLK452Low Reference
55BRN1456EGR Valve Position Signal
56----Not Used
57ORN440Battery Positive Voltage
58DK GRN1049ECM/PCM/VCM Class 2 Serial Data
59YEL710Class 2 Serial Data
60ORN/BLK469Low Reference
61PNK/BLK632Low Reference
62----Not Used
63GRA720Low Reference
63TAN413HO2S Low Reference (Denso Sensors) HO2S Low Signal (Delphi Sensors)
64----Not Used
65PPL1670HO2S High Signal [- Bank 2 Sensor 2]
66PPL1666HO2S High Signal [- Bank 2 Sensor 1]
67----Not Used
68PPL/WHT1668HO2S High Signal [- Bank 1 Sensor 2]
69PPL/WHT1665HO2S High Signal [- Bank 1 Sensor 1]
70BRN1174Oil Level Switch Signal
71----Not Used
72YEL772Transmission Range Switch Signal B
73BRN/WHT633CMP Sensor Signal
74YEL410ECT Sensor Signal
75PNK1020Off/Run/Crank Voltage
76BLK/WHT845Fuel Injector 5 Control
77DK BLU/WHT878Fuel Injector 8 Control
78----Not Used
79WHT6873-2 Shift Solenoid Valve Control
80ORN/BLK510Low Reference

2001-02 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (2 of 2)

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Fig. 2001-02 C2 Connector

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2BRN418TCC PWM Solenoid Valve Control
3TAN1465Fuel Pump Relay Control [- Secondary]
4----Not Used
5TAN/BLK464Delivered Torque Signal
6RED/BLK1228PC Solenoid Valve High Control (Sol. A)
7RED1676EGR Valve Supply Voltage (5 Volt)
8LT BLU/WHT1229PC Solenoid Valve Low Control (Sol. A)
  9DK GRN/WHT465Fuel Pump Relay Control [- Primary]  
  10WHT121Engine Speed Signal  
  11DK BLU604A/C High Pressure Recirculation Switch Signal  
  12----Not Used  
  13LT BLU/BLK396Cruise Control Engaged Signal  
  14----Not Used  
  15BRN25Charge Indicator Control  
  16GRY/BLK16944WD Low Signal  
  17DK GRN/WHT2523A/C Request  
  18----Not Used  
  19BLK/WHT1695Axle Switch Signal  
  20LT GRN/BLK822VSS Low Signal  
  21PPL/WHT821VSS High Signal  
  22RED/BLK1230AT ISS High Signal  
  23DK BLU/WHT1231AT ISS Low Signal  
  24----Not Used  
  25TAN472IAT Sensor Signal  
  26PPL2121IC 1 Control  
  27RED2127IC 7 Control  
  28LT BLU/WHT2126IC 6 Control  
  29DK GRN/WHT2124IC 4 Control  
  30----Not Used  
  31YEL492MAF Sensor Signal  
  32LT GRN432MAP Sensor Signal  
  33DK GRN1614Recirculation Actuator Control  
  34DK GRN/WHT428EVAP Canister Purge Solenoid Control  
  35----Not Used  
  36BRN436AIR Pump Relay Control  
  37-38----Not Used  
  39RED63112 Volt Reference  
  40BLK/WHT451Ground  
  41WHT257EGR Solenoid Control  
  42TAN/BLK422TCC Solenoid Valve Control  
  43DK GRN/WHT459A/C Compressor Clutch Relay Control  

2001-02 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (1 of 2)

Click image to see an enlarged view

Fig. 2001-02 C2 Connector (CONTINUED)

PinWire ColorCircuit No.Function
44----Not Used
45WHT1310EVAP Canister Vent Solenoid Control
46BRN/WHT419MIL Control
47YEL/BLK1223(2-3 Shift Solenoid or Shift Soleniod B) Valve Control
48LT GRN1222(1-2 Shift Solenoid or Shift Soleniod A) Valve Control
49YEL/BLK1827Vehicle Speed Signal
50DK GRN/WHT817VSS Signal
51YEL/BLK1227TFT Sensor Signal
52GRA23Generator Field Duty Cycle Signal
53----Not Used
54PPL1589Fuel Level Sensor Signal [- Primary]
55DK GRN603A/C Low Pressure Switch Signal
56----Not Used
57BLK552Low Reference
58-59----Not Used
60BRN2129Low Reference
61BRN/WHT2130Low Reference
62GRA773Transmission Range Switch Signal C
63PNK1224Transmission Fluid Pressure Switch Signal A
64DK GRN890Fuel Tank Pressure Sensor Signal
65----Not Used
66PPL/WHT2128IC 8 Control
67RED/WHT2122IC 2 Control
68DK GRN2125IC 5 Control
69LT BLU2123IC 3 Control
70-71----Not Used
72BLK/WHT3122HO2S Heater Low Control [- Bank 2 Sensor 1]
73DK BLU1936Fuel Level Sensor Signal [- Secondary]
74LT GRN/WHT3213HO2S Heater High Control [- Bank 2 Sensor 1]
75----Not Used
76LT GRN/WHT1749IAC Coil B High Control
77LT GRN/BLK444IAC Coil B Low Control
78LT BLU/BLK1748IAC Coil A Low Control
79LT BLU/WHT1747IAC Coil A High Control
80LT GRN3212HO2S Heater Low Control [- Bank 2 Sensor 1]

2001-02 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (2 of 2)

Click image to see an enlarged view

Fig. 2003-05 C1 Connector

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2LT GRN186712 Volt Reference
3PNK/BLK1746Fuel Injector 3 Control
4LT GRN/BLK1745Fuel Injector 2 Control
5-6----Not Used
7GRY27055 Volt Reference
8-10----Not Used
11LT BLU1876Knock Sensor 2 Signal
12DK BLU/WHT1869CKP Sensor Signal
13ORN/BLK463Requested Torque Signal (NW7)
14ORN/BLK1061UART Serial Data
15DK BLU/WHT774UART Serial Data
16----Not Used
17DK BLU1225Transmission Fluid Pressure Switch Signal B (A/T)
18RED1226Transmission Fluid Pressure Switch Signal C (A/T)
19PNK439Ignition 1 Voltage
20ORN440Battery Positive Voltage
21YEL/BLK1868Low Reference
22----Not Used
23BLK470Low Reference
24BLK/WHT451Ground
25TAN1671HO2S Low Signal - Bank 2 Sensor 2
26TAN1667HO2S Low Signal - Bank 2 Sensor 1
27BLK/WHT451Ground
28TAN/WHT1669HO2S Low Signal - Bank 1 Sensor 2
29TAN1664HO2S Low Signal - Bank 1 Sensor 1
30LT GRN1478Coolant Level Switch Signal
31----Not Used
32BLK/WHT771Transmission Range Switch Signal A (A/T)
33PPL420TCC Brake Switch/Cruise Control Release Switch Signal
34WHT776Transmission Range Switch Signal P (A/T)
35GRY48CPP Switch Signal (M/T)
36BLK1744Fuel Injector 1 Control
37YEL/BLK846Fuel Injector 6 Control
38PNK/WHT1101Damping Lift/Dive Signal
39YEL/BLK625Starter Enable Relay Control
40BLK/WHT451Ground
41-42----Not Used
43RED/BLK877Fuel Injector 7 Control
44LT BLU/BLK844Fuel Injector 4 Control
45GRY27005 Volt Reference (A/C)
46GRY4745 Volt Reference (EVA)
47----Not Used

2003-05 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (1 of 2)

Click image to see an enlarged view

Fig. 2003-05 C1 Connector (Continued)

PinWire ColorCircuit No.Function
48GRY5975 Volt Reference
49-50----Not Used
51DK BLU496Knock Sensor 1 Signal
52----Not Used
53GRY720Low Reference (A/T)
54ORN/BLK469Low Reference
55----Not Used
56WHT1579Fuel Temperature/Composition Signal (L59)
57ORN440Battery Positive Voltage
58DK GRN1049Class 2 Serial Data
59YEL710Class 2 Serial Data
60----Not Used
61PNK/BLK632Low Reference
62----Not Used
63BLK2755Low Reference
64BLK/WHT451Ground
65PPL1670HO2S High Signal - Bank 2 Sensor 2
66PPL1666HO2S High Signal - Bank 2 Sensor 1
67BLK/WHT451Ground
68PPL/WHT1668HO2S High Signal - Bank 1 Sensor 2
69PPL/WHT1665HO2S High Signal - Bank 1 Sensor 1
70BRN1174Oil Level Switch Signal
71----Not Used
72YEL772Transmission Range Switch Signal B (A/T)
73BRN/WHT633CMP Sensor Signal
74YEL410ECT Sensor Signal
75PNK1020Off/Run/Crank Voltage
76BLK/WHT845Fuel Injector 5 Control
77DK BLU/WHT878Fuel Injector 8 Control
78----Not Used
79WHT6873-2 Shift Solenoid Valve Control (M30/M32)
80BLK407Low Reference

2003-05 4.8L, 5.3L, 6.0L Engine PCM C1 Connector Pinout (2 of 2)

Click image to see an enlarged view

Fig. 2003-05 C2 Connector

PinWire ColorCircuit No.Function
1BLK/WHT451Ground
2BRN418TCC PWM Solenoid Valve Control (A/T)
3TAN1465Fuel Pump Relay Control - Secondary (Dual Tanks)
4----Not Used
5TAN/BLK464Delivered Torque Signal (NW7)
6RED/BLK1228PC Solenoid Valve High Control (A/T)
7----Not Used
8LT BLU/WHT1229PC Solenoid Valve Low Control (A/T)
9DK GRN/WHT465Fuel Pump Relay Control - Primary
10WHT121Engine Speed Signal
11-13----Not Used
14RED/BLK380A/C Refrigerant Pressure Sensor Signal (A/C)
15BRN25Charge Indicator Control
16GRY/BLK16944WD Low Signal
17----Not Used
18DK GRN1433Clutch Start Switch Signal (M/T)
19BLK/WHT1695Axle Switch Signal (NP2)
20LT GRN/BLK822VSS Low Signal
21PPL/WHT821VSS High Signal
22RED/BLK1230AT ISS High Signal (4WD w/MT1)
23DK BLU/WHT1231AT ISS Low Signal (4WD w/MT1)
24----Not Used
25TAN472IAT Sensor Signal
26PPL2121IC 1 Control
27RED2127IC 7 Control
28LT BLU/WHT2126IC 6 Control
29DK GRN/WHT2124IC 4 Control
30----Not Used
31YEL492MAF Sensor Signal
32LT GRN432MAP Sensor Signal
33----Not Used
34DK GRN/WHT428EVAP Canister Purge Solenoid Control
35-38----Not Used
39RED63112 Volt Reference
40BLK/WHT451Ground
41----Not Used
42TAN/BLK422TCC Solenoid Valve Control (M30/M32)
43DK GRN/WHT459A/C Compressor Clutch Relay Control (A/C)
44----Not Used
45WHT1310EVAP Canister Vent Solenoid Control (EVA)
46BRN/WHT419MIL Control
47YEL/BLK12232-3 Shift Solenoid Valve Control (A/T)

2003-05 4.8L, 5.3L, 6.0L Engine PCM C2 Connector Pinout (1 of 2)

Click image to see an enlarged view

Fig. 2003-05 C2 Connector (CONTINUED)

PinWire ColorCircuit No.Function
48LT GRN12221-2 Shift Solenoid Valve Control (A/T)
49YEL/BLK1827Vehicle Speed Signal
50DK GRN/WHT817Vehicle Speed Signal
51YEL/BLK1227TFT Sensor Signal (A/T)
52BRN2391HO2S Heater Low Control Bank 1 Sensor 2
53RED/WHT3223HO2S Heater Low Control Bank 2 Sensor 2
54PPL1589Fuel Level Sensor Signal - Primary
55-56----Not Used
57