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Truck 2004 4.8/5.3/6.0 Connector C1 BLUE
Pin Wire Color Circuit No. Function
1 BLK/WHT 451 Ground
2 LT GRN 1867 12 Volt Reference
3 PNK/BLK 1746 Fuel Injector 3 Control
4 LT GRN/BLK 1745 Fuel Injector 2 Control
5      
6 -- -- Not Used
7 GRY 2705 5 Volt Reference (OIL PRESSURE)
8 --GRY -- Not Used- or 5V Ref TPS Pin "C"
9 -- -- Not Used
10 -- -- Not Used
11 LT BLU 1876 Knock Sensor 2 Signal
12 DK BLU/WHT 1869 CKP Sensor Signal
13 ORN/BLK 463 Requested Torque Signal (NW7)
14 ORN/BLK 1061 UART Serial Data (drive by wire only)
15 DK BLU/WHT 774 UART Serial Data (drive by wire only)
16 -- -- Not Used
17 DK BLU 1225 Transmission Fluid Pressure Switch Signal B (A/T)
18 RED 1226 Transmission Fluid Pressure Switch Signal C (A/T)
19 PNK 439 Ignition 1 Voltage
20 ORN 440 Battery Positive Voltage
21 YEL/BLK 1868 Crankshaft Position Sensor Ground
22 -- -- Not Used
23 BLK 470 Low Reference
24 BLK/WHT 451 Ground
25 TAN 1671 HO2S Low Signal - Bank 2 Sensor 2
26 TAN 1667 HO2S Low Signal - Bank 2 Sensor 1
27 BLK/WHT 451 Ground
28 TAN/WHT 1669 HO2S Low Signal - Bank 1 Sensor 2
29 TAN 1664 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 (A/T)
33 PPL 420 TCC Brake Switch/Cruise Control Release Switch Signal
34 WHT 776 Transmission Range Switch Signal P (A/T)
35 GRY 48 CPP Switch Signal (M/T)
36 BLK 1744 Fuel Injector 1 Control
37 YEL/BLK 846 Fuel Injector 6 Control
38 PNK/WHT 1101 Damping Lift/Dive Signal
39 YEL/BLK 625 Starter Enable Relay Control
40 BLK/WHT 451 Ground
41 -- -- Not Used
42 -- -- Not Used - CAN BE USED FOR FAN 1
43 RED/BLK 877 Fuel Injector 7 Control
44 LT BLU/BLK 844 Fuel Injector 4 Control
45 GRY 2700 5 Volt Reference (A/C)
46 GRY 474 5 Volt Reference (EVA)
47 -- -- Not Used
48 GRY 597 5 Volt Reference (MAP)
49-50 -- -- Not Used
51 DK BLU 496 Knock Sensor 1 Signal
52 -- -- Not Used
53 GRY 720 Low Reference (TRANS)
54 ORN/BLK 469 Low Reference (MAP)
55 -- -- Not Used
56 WHT 1579 Fuel Temperature/Composition Signal (L59)
57 ORN 440 Battery Positive Voltage
58 DK GRN 1049 Class 2 Serial Data
59 YEL 710 Class 2 Serial Data
60 --BLK --452 Not Used- Low Ref TPS  PIN "B"
61 PNK/BLK 632 Low Reference (CMP)
62 -- -- Not Used
63 BLK 2755 Low Reference (OIL PRESSURE SENSOR)
64 BLK/WHT 451 PCM Ground
65 PPL 1670 HO2S High Signal - Bank 2 Sensor 2
66 PPL 1666 HO2S High Signal - Bank 2 Sensor 1
67 BLK/WHT 451 PCM Ground
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 (A/T)
73 BRN/WHT 633 CMP Sensor Signal
74 YEL 410 ECT Sensor Signal
75 PNK 1020 Off/Run/Crank Voltage
76 BLK/WHT 845 Fuel Injector 5 Control
77 DK BLU/WHT 878 Fuel Injector 8 Control
78 -- -- Not Used
79 WHT 687 3-2 Shift Solenoid Valve Control (M30/M32)
80 BLK 407 Low Reference (ECT)

 

Truck 2004 4.8/5.3/6.0 Connector C2 GREEN

Pin Wire Color Circuit No. Function
1 BLK/WHT 451 PCM Ground
2 BRN 418 TCC PWM Solenoid Valve Control (A/T)
3 TAN 1465 Fuel Pump Relay Control - Secondary (Dual Tanks)
4 -- -- Not Used
5 TAN/BLK 464 Delivered Torque Signal (NW7)
6 RED/BLK 1228 PC Solenoid Valve High Control (A/T)
7 -- -- Not Used
8 LT BLU/WHT 1229 PC Solenoid Valve Low Control (A/T)
9 DK GRN/WHT 465 Fuel Pump Relay Control - Primary
10 WHT 121 Engine Speed Signal
11 -- -- Not Used
12 -- -- Not Used
13 -- -- Not Used
14 RED/BLK 380 A/C Refrigerant Pressure Sensor Signal (A/C)
15 BRN 25 Charge Indicator Control
16 GRY/BLK 1694 4WD Low Signal
17 -- -- Not Used
18 DK GRN 1433 Clutch Start Switch Signal (M/T)
19 BLK/WHT 1695 Axle Switch Signal (NP2)
20 LT GRN/BLK 822 VSS Low Signal
21 PPL/WHT 821 VSS High Signal
22 RED/BLK 1230 AT ISS High Signal (4WD w/MT1)
23 DK BLU/WHT 1231 AT ISS Low Signal (4WD w/MT1)
24

--(red connector

DK BLU)

 --417 Not Used-(RED connector-TPS Sensor Signal Pin "C"
25 TAN 472 IAT Sensor Signal
26 PPL 2121 IC 1 Control
27 RED 2127 IC 7 Control
28 LT BLU/WHT 2126 IC 6 Control
29 DK GRN/WHT 2124 IC 4 Control
30 -- -- Not Used
31 YEL 492 MAF Sensor Signal
32 LT GRN 432 MAP Sensor Signal
33 -- -- Not Used - CAN BE USED FOR FAN 2
34 DK GRN/WHT 428 EVAP Canister Purge Solenoid Control
35 -- -- Not Used
36 -- -- Not Used
37 -- -- Not Used
38 -- -- Not Used
39 RED 631 12 Volt Reference (CMP)
40 BLK/WHT 451 PCM Ground
41 -- -- Not Used
42 TAN/BLK 422 TCC Solenoid Valve Control (M30/M32)
43 DK GRN/WHT 459 A/C Compressor Clutch Relay Control (A/C)
44 -- -- Not Used
45 WHT 1310 EVAP Canister Vent Solenoid Control (EVA)
46 BRN/WHT 419 MIL Control
47 YEL/BLK 1223 2-3 Shift Solenoid Valve Control (A/T)
48 LT GRN 1222 1-2 Shift Solenoid Valve Control (A/T)
49 YEL/BLK 1827 Vehicle Speed Signal
50 DK GRN/WHT 817 Vehicle Speed Signal
51 YEL/BLK 1227 TFT Sensor Signal (A/T)
52 BRN 2391 HO2S Heater Low Control Bank 1 Sensor 2
53 RED/WHT 3223 HO2S Heater Low Control Bank 2 Sensor 2
54 PPL 1589 Fuel Level Sensor Signal - Primary
55 -- -- Not Used
56   -- Not Used
57 BLK 552 Low Reference (IAT)
58 TAN/WHT 332 Oil Pressure Sensor Signal
59 PPL 806 Crank Voltage
60 BRN 2129 Ignition Control Reference Low Bank 1
61 BRN/WHT 2130 Ignition Control Reference Low Bank 2
62 GRY 773 Transmission Range Switch Signal C (A/T)
63 PNK 1224 Transmission Fluid Pressure Switch Signal A (A/T)
64 DK GRN 890 Fuel Tank Pressure Sensor Signal (EVA)
65 -- -- Not Used
66 PPL/WHT 2128 IC 8 Control
67 RED/WHT 2122 IC 2 Control
68 DK GRN 2125 IC 5 Control
69 LT BLU 2123 IC 3 Control
70 -- -- Not Used
71 -- -- Not Used
72 BLK/WHT 3113 HO2S Heater Low Control Bank 1 Sensor 1
73 DK BLU 1936 Fuel Level Sensor Signal - Secondary
74 LT GRN 3212 HO2S Heater Low Control Bank 2 Sensor 1
75 GRY 23 Generator Field Duty Cycle Signal
76 -- -- Not Used
77 -- -- Not Used
78 -- -- Not Used
79 -- -- Not Used
80 BLK 2751 Low Reference (A/C)

Truck 1999 5.3L Connector C1 BLUE
Pin Wire Color Circuit No. Function
1 BLK/WHT 451 PCM Ground
2 LT GRN 1867 Crankshaft Position Sensor B+ Supply
3 PNK/BLK 1746 Injector 3 Control
4 LT GRN/BLK 1745 Injector 2 Control
5 -- -- Not Used
6 -- -- Not Used
7 -- -- Not Used
8 -- -- Not Used
9 -- -- Not Used
10 -- -- Not Used
11 LT BLU 1876 Knock Sensor Signal Rear
12 DK BLU/WHT 1869 Crankshaft Position Sensor Signal
13 ORN/BLK 463 Requested Torque Signal (NW7)
14 ORN/BLK 1061 UART Serial Data (drive by wire only)
15 DK BLU/WHT 774 UART Serial Data (drive by wire only)
16 -- -- Not Used
17 DK BLU 1225 Transmission Fluid Pressure Switch B
18 RED 1226 Transmission Fluid Pressure Switch C
19 PNK 439 PCM Ignition Supply
20 ORN 440 PCM Battery Supply
21 YEL/BLK 1868 Crankshaft Position Sensor Ground
22 -- -- Not Used
23 PPL 719 Sensor Ground EGR
24 -- -- Not Used
25 TAN 1671 HO2S Signal Low B2S2 (w/Case Ground O2 Sensors)
25 TAN 413 HO2S Signal Low B2S2 (w/Isolated Ground O2 Sensors)
26 TAN 1667 HO2S Signal Low B2S1 (w/Case Ground O2 Sensors)
26 TAN 413 HO2S Signal Low B2S1 (w/Isolated Ground O2 Sensors)
27 -- -- Not Used
28 TAN/WHT 1669 HO2S Signal Low B1S2 (w/Case Ground O2 Sensors)
28 TAN 413 HO2S Signal Low B1S2 (w/Isolated Ground O2 Sensors)
29 TAN/WHT 1653 HO2S Signal Low B1S1 (w/Case Ground O2 Sensors)
29 TAN 413 HO2S Signal Low B1S1 (w/Isolated Ground O2 Sensors)
30 LT GRN 1478 Engine Coolant Level Switch
31 -- -- Not Used
32 BLK/WHT 771 PRND A Input
33 PPL 420 TCC Brake Switch
34 WHT 776 PRND P Input - PCM can be programmed to accept a SINGLE WIRE park/neutral signal on this PIN, if no trans mounted range sensor is present
35 GRA 48 Clutch Switch Signal (manual trans)
36 BLK 1744 Injector 1 Control
37 YEL/BLK 846 Injector 6 Control
38 PNK/WHT 1101 Damping Lift/Drive Signal
39 -- -- Not Used
40 BLK/WHT 451 PCM Ground
41 BLK 407 Sensor Ground (Trans) w/Case grounded o2 Sensors
41 GRY 720 Sensor Ground (Trans, ETC) w/Isolated Ground O2 Sensors
42 -- -- Not Used - ADD PIN HERE FOR FAN 1 RELAY CONTROL
43 RED/BLK 877 Injector 7 Control
44 LT BLU/BLK 844 Injector 4 Control
45 GRA 474 Fuel Tank Pressure Sensor 5V Reference
46 GRA 416 TP Sensor 5V Reference
47 GRA 597 MAP Sensor 5V Reference
48 GRA 596 EGR Pintle Position Sensor 5V Reference
49-50 -- -- Not Used
51 DK BLU 496 Knock Sensor Signal Front
52 -- -- Not Used
53 BLK 470 Fuel Tank Pressure Sensor Ground
54 BLK 452 TP Sensor Ground
55 BRN 1456 EGR Pintle Position Sensor Signal
56 WHT -- Fuel Temp/Composition Signal (L59 Flex Fuel)
57 ORN 440 PCM Battery Supply
58 DK GRN 1049 Serial Data to OBD2 Port
59 YEL 710 Serial Data to BCM
60 ORN/BLK 469 MAP Sensor Ground
61 PNK/BLK 632 CMP Sensor Ground
62 -- -- Not Used
63 GRY 720 Sensor Ground (ETC) w/case grounded o2 sensors
63 TAN 413 Sensor Ground (HO2S Low Signal) w/isolated grounded o2 sensors
64 -- -- Not Used
65 PPL 1670 HO2S Signal High Bank 2 Sensor 2
66 PPL 1666 HO2S Signal High Bank 2 Sensor 1
67 -- -- Not Used
68 PPL/WHT 1668 HO2S Signal High Bank 1 Sensor 2
69 PPL/WHT 1665 HO2S Signal High Bank 1 Sensor 1
70 BRN 1174 Low Oil Level Switch
71 -- -- Not Used - ADD PIN HERE FOR TOW/HAUL MODE SWITCH INPUT (programming required to make function)
72 YEL 772 PRND B Input
73 BRN/WHT 633 Camshaft Position (CMP) Sensor Signal
74 YEL 410 Engine Coolant Temperature (ECT) Sensor Signal
75 PNK 1020 PCM Ignition Supply
76 BLK/WHT 845 Injector 5 Control
77 DK BLU/WHT 878 Injector 8 Control
78 -- -- Not Used
79 WHT 687 3-2 Shift Solenoid Control
80 ORN/BLK 510 Fuel Level Sensor Ground
       
Truck 1999 5.3L Connector C2 RED
Pin Wire Color Circuit No. Function
1 BLK/WHT 451 PCM Ground
2 BRN 418 TCC Control Solenoid
3 TAN 1465 Fuel Pump Relay Control - Secondary
4 -- -- Not Used
5 TAN/BLK 464 Deliverd Torque Signal
6 RED/BLK 1228 Transmission Fluid Pressure Control Solenoid High
7 RED 1676 EGR Solenoid Supply
8 LT BLU/WHT 1229 Transmission Fluid Pressure Control Solenoid Low
9 DK GRN/WHT 465 Fuel Pump Relay Control
10 WHT 121 Engine Speed (Tach) Output Signal
11 DK BLU 604 A/C High Pressure Recirculation Switch
12 -- -- Not Used
13 LT BLU/BLK 396 Cruise Control Engage Signal
14 -- -- Not Used
15 BRN 25 Generator L Terminal (Alternator turn on signal)
16 GRA/BLK 1694 4 Wheel Drive Switch Signal Low (KEEP IF USING STOCK TRANSFER CASE IN A 4WD APPLACTION, WITH VSS ON OUTPUT OF TRANSFER CASE.
17 DK GRN/WHT 762 A/C Request Signal
18 -- -- Not Used
19 BLK/WHT 1695 4 Wheel Drive Front Axle Switch
20 LT GRN/BLK 822 Vehicle Speed Sensor (VSS) Reference Low
21 PPL/WHT 821 Vehicle Speed Sensor (VSS) Signal
22 RED/BLK 1230 Vehicle Speed Sensor (VSS) Signal (4L80E Only)
23 DK BLU/WHT 1231 Vehicle Speed Sensor (VSS) Reference Low (4L80E Only)
24 DK BLU 417 TP Sensor Signal
25 TAN 472 IAT Sensor Signal
26 PPL 2121 Ignition Control 1
27 RED 2127 Ignition Control 7
28 LT BLU/WHT 2126 Ignition Control 6
29 DK GRN/WHT 2124 Ignition Control 4
30 -- -- Not Used
31 YEL 492 MAF Sensor Signal
32 LT GRN 432 MAP Sensor Signal
33 DK GRN 1614 HVAC Recirculation Door Control (KEEP PIN HERE FOR FAN 2 RELAY CONTROL)
34 DK GRN/WHT 428 EVAP Canister Purge Solenoid Control
35 -- -- Not Used
36 BRN 436 AIR Pump Relay Control (w/NC1)
37 -- -- Not Used
38 -- -- Not Used - ADD PIN FOR PWM FUEL GAUGE SIGNAL OUTPUT (used to run factory fuel level gauge in 96-99 trucks)
39 RED 631 CMP Sensor B+ Supply
40 BLK/WHT 451 PCM Ground
41 WHT 257 EGR Solenoid Ground
42 TAN/BLK 422 TCC Enable Circuit (4L60-E only)
43 DK GRN/WHT 459 A/C Clutch Relay Control
44 -- -- Not Used
45 WHT 1310 EVAP Canister Vent Valve Control
46 BRN/WHT 419 Malfunction Indicator Lamp (MIL) Control
47 YEL/BLK 1223 Transmission Shift Solenoid B
48 LT GRN 1222 Transmission Shift Solenoid A
49 YEL/BLK 1827 Vehicle Speed Output Circuit 128K
50 DK GRN/WHT 817 Vehicle Speed Output Circuit 4K
51 YEL/BLK 1227 Transmission Temperature Sensor Signal
52 GRY 23 Generator Field Duty Cycle Signal
53 -- -- Not Used
54 PPL 1589 Fuel Level Sensor Signal
55 DK GRN 603 A/C Low Pressure  Switch Signal
56 -- -- Not Used
57 BLK 552 IAT Sensor Ground
58 -- -- Not Used
59 -- -- Not Used
60 BRN 2129 Ignition Control Reference Low Bank 1
61 BRN/WHT 2130 Ignition Control Reference Low Bank 2
62 GRA 773 PRND C
63 PNK 1224 Transmission Fluid Pressure Switch A
64 DK GRN 890 Fuel Tank Pressure Sensor Signal
65 -- -- Not Used
66 PPL/WHT 2128 Ignition Control 8
67 RED/WHT 2122 Ignition Control 2
68 DK GRN 2125 Ignition Control 5
69 LT BLU 2123 Ignition Control 3
70 -- -- Not Used
71 -- -- Not Used -
72 -- -- Not Used
73 DK BLU 1936 Fuel Level Sensor Signal - Secondary
74 LT GRN/WHT 3213 HO2S Heater Control (w/isolated grounded sensors) (2001-02 6.0L Only)
75 -- -- Not Used
76 LT GRN/WHT 1749 IAC Coil B High
77 LT GRN/BLK 444 IAC Coil B Low
78 LT BLU/BLK 1748 IAC Coil A Low
79 LT BLU/WHT 1747 IAC Coil A High
80 LT GRN 3212 HO2S Heater Low Reference (w/isolated grounded sensors (2001-02 6.0L Only)

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