1999 PCM Connector C1 (BLU) Connector Part Information Pin Wire Color Circuit No. PCM Connector C1 Assembly 12191489 TPA (BLU) 12176408 Connector Cover 12191108 1 BLK/ 451 PCM Ground Function 2 LT GRN 1867 Crankshaft Position Sensor B+ Supply 3 PNK/BLK 1746 Injector 3 Control 4 LT GRN/BLK 1745 Injector 2 Control 5-10 -- -- Not Used 11 LT BLU 1876 Knock Sensor Signal Rear 12 DK BLU/ 1869 Crankshaft Position Sensor Signal 13-16 -- -- Not Used 17 DK BLU 1225 Transmission Range Signal B 18 RED 1226 Transmission Range Signal 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 24 -- -- Not Used 25 TAN 1671 HO2S Signal Low Bank 2 Sensor 2
26 TAN 1667 HO2S Signal Low Bank 2 Sensor 1 27 -- -- Not Used 28 TAN/ 1669 HO2S Signal Low Bank 1 Sensor 2 29 TAN/ 1653 HO2S Signal Low Bank 1 Sensor 1 30 LT GRN 1478 Engine Coolant Level Switch 31 -- -- Not Used 32 BLK/ 771 PRND A Input 33 PPL 420 TCC Brake Switch 34 776 PRND P Input 35 GRA 48 Clutch Switch Signal 36 BLK 1744 Injector 1 Control 37 YEL/BLK 846 Injector 6 Control 38-39 -- -- Not Used 40 BLK/ 451 PCM Ground 41 BLK 407 Sensor Ground 42 -- -- Not Used 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 -- -- Not Used 57 ORN 440 PCM Battery Supply 58 DK GRN 1049 Serial Data 59 YEL 710 Serial Data 60 ORN/BLK 469 MAP Sensor Ground 61 PNK/BLK 632 CMP Sensor Ground 62 -- -- Not Used 63 GRA 720 64 -- -- Not Used Engine Coolant Temperature (ECT) Sensor Ground 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/ 1668 HO2S Signal High Bank 1 Sensor 2 69 PPL/ 1665 HO2S Signal High Bank 1 Sensor 1 70 BRN 1174 Low Oil Level Switch 71 -- -- Not Used 72 YEL 772 PRND B Input 73 BRN/ 633 Camshaft Position (CMP) Sensor Signal 74 YEL 410 Engine Coolant Temperature (ECT) Sensor Signal 75 PNK 1020 PCM Ignition Supply 76 BLK/ 845 Injector 5 Control 77 DK BLU/ 878 Injector 8 Control 78 -- -- Not Used 79 687 3-2 Shift Solenoid Control 80 ORN/BLK 510 Fuel Level Sensor Ground PCM Connector C2 (RED) Connector Part Information Pin Wire Color Circuit No. PCM Connector C2 Assembly 12191488 TPA (RED) 12176410 Connector Cover 12191108 1 BLK/ 451 PCM Ground 2 BRN 418 TCC Control Solenoid 3-5 -- -- Not Used Function 6 RED/BLK 1228 Transmission Fluid Pressure Control Solenoid High 7 RED 1676 EGR Solenoid Supply
8 LT BLU/ 1229 Transmission Fluid Pressure Control Solenoid Low 9 DK GRN/ 465 Fuel Pump Relay Control 10 121 Engine Speed (Tach) Output Signal 11 DK BLU 604 Secondary A/C High Pressure Switch 12 -- -- Not Used 13 LT BLU/BLK 396 Cruise Control Engage Signal 14 -- -- Not Used 15 BRN 25 Generator L Terminal 16 GRA/BLK 1694 4 Wheel Drive Switch Signal Low 17 DK GRN/ 762 A/C Request Signal 18 -- -- Not Used 19 BLK/ 1695 4 Wheel Drive Front Axle Switch 20 LT GRN/BLK 822 Vehicle Speed Sensor (VSS) Reference Low 21 PPL/ 821 Vehicle Speed Sensor (VSS) Signal 22 RED/BLK 1230 Vehicle Speed Sensor (VSS) Signal (6.0L Only) 23 DK BLU/ 1231 Vehicle Speed Sensor (VSS) Reference Low (6.0L 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/ 2126 Ignition Control 6 29 DK GRN/ 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 34 DK GRN/ 428 EVAP Canister Purge Solenoid Control 35 -- -- Not Used 36 BRN 436 AIR Pump Relay Control (w/nc1) 37-38 -- -- Not Used 39 RED 631 CMP Sensor B+ Supply 40 BLK/ 451 PCM Ground 41 257 EGR Solenoid Ground 42 TAN/BLK 422 TCC Enable Circuit (4L60-E only) 43 DK GRN/ 459 A/C Clutch Relay Control 44 -- -- Not Used 45 1310 EVAP Canister Vent Valve Control 46 BRN/ 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/ 817 Vehicle Speed Output Circuit 4K 51 YEL/BLK 1227 Transmission Temperature Sensor Signal 52-53 -- -- Not Used 54 PPL 1589 Fuel Level Sensor Signal 55 DK GRN 603 A/C Compressor Cycling Switch Signal 56 -- -- Not Used 57 BLK 552 IAT Sensor Ground 58-59 -- -- Not Used 60 BRN 2129 Ignition Control Reference Low Bank 1 61 BRN/ 2130 Ignition Control Reference Low Bank 2 62 GRA 773 PRND C 63 PNK 1224 Transmission Range Signal A 64 DK GRN 890 Fuel Tank Pressure Sensor Signal 65 -- -- Not Used 66 PPL/ 2128 Ignition Control 8 67 RED/ 2122 Ignition Control 2 68 DK GRN 2125 Ignition Control 5 69 LT BLU 2123 Ignition Control 3 70-75 -- -- Not Used 76 LT GRN/ 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/ 1747 IAC Coil A High 80 -- -- Not Used 2004 Powertrain Control Module (PCM) C1
Connector Part Information Pin Wire Color 12191489 80 way F Micro-Pack 100 Series (BLU) Circuit No. 1 BLK/ 451 Ground 2 LT GRN 1867 12 Volt Reference Function 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 8-10 -- -- Not Used 11 LT BLU 1876 Knock Sensor 2 Signal 12 DK BLU/ 1869 CKP Sensor Signal 13 ORN/BLK 463 Requested Torque Signal (NW7) 14 ORN/BLK 1061 UART Serial Data 15 DK BLU/ 774 UART Serial Data 16 -- -- Not Used 17 DK BLU 1225 18 RED 1226 19 PNK 439 Ignition 1 Voltage Transmission Fluid Pressure Switch Signal B (A/T) Transmission Fluid Pressure Switch Signal C (A/T) 20 ORN 440 Battery Positive Voltage 21 YEL/BLK 1868 Low Reference
22 -- -- Not Used 23 BLK 470 Low Reference 24 BLK/ 451 Ground 25 TAN 1671 HO2S Low Signal - Bank 2 Sensor 2 26 TAN 1667 HO2S Low Signal - Bank 2 Sensor 1 27 BLK/ 451 Ground 28 TAN/ 1669 HO2S Low Signal - Bank 1 Sensor 2 29 TAN 1664 HO2S Low Signal - Bank 1 Sensor 1 30-31 -- -- Not Used 32 BLK/ 771 Transmission Range Switch Signal A (A/T) 33 PPL 420 TCC Brake Switch/Cruise Control Release Switch Signal 34 776 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/ 1101 Damping Lift/Dive Signal (MN8 or MT1) 39 YEL/BLK 625 Starter Enable Relay Control 40 BLK/ 451 Ground 41-42 -- -- Not Used 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 49-50 -- -- Not Used 51 DK BLU 496 Knock Sensor 1 Signal 52 -- -- Not Used 53 GRY 720 Low Reference (A/T) 54 ORN/BLK 469 Low Reference 55 -- -- Not Used 56 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 -- -- Not Used 61 PNK/BLK 632 Low Reference 62 -- -- Not Used
63 BLK 2755 Low Reference 64 BLK/ 451 Ground 65 PPL 1670 HO2S High Signal - Bank 2 Sensor 2 66 PPL 1666 HO2S High Signal - Bank 2 Sensor 1 67 BLK/ 451 Ground 68 PPL/ 1668 HO2S High Signal - Bank 1 Sensor 2 69 PPL/ 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/ 633 CMP Sensor Signal 74 YEL 410 ECT Sensor Signal 75 PNK 1020 Off/Run/Crank Voltage 76 BLK/ 845 Fuel Injector 5 Control 77 DK BLU/ 878 Fuel Injector 8 Control 78 -- -- Not Used 79 687 3-2 Shift Solenoid Valve Control (M30/M32) 80 BLK 407 Low Reference Powertrain Control Module (PCM) C2 Connector Part Information 12191488 80 way F Micro-Pack 100 Series (GRN) Pin Wire Color Circuit Function
No. 1 BLK/ 451 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/ 1229 PC Solenoid Valve Low Control (A/T) 9 10 DK GRN/ 465 Fuel Pump Relay Control - Primary 121 Engine Speed Signal (Except HP2) LT BLU/BLK 647 11-13 -- -- Not Used 14 Medium Resolution Engine Speed Signal (HP2) RED/BLK 380 A/C Refrigerant Pressure Sensor Signal (A/C) 15 BRN 25 Charge Indicator Control (Except HP2) 16 GRY/BLK 1694 4WD Low Signal 17 -- -- Not Used 18 DK GRN 1433 Clutch Start Switch Signal (M/T) 19 BLK/ 1695 Axle Switch Signal (NP2) 20 LT GRN/BLK 822 VSS Low Signal 21 PPL/ 821 VSS High Signal 22 RED/BLK 1230 AT ISS High Signal (4WD w/mt1) 23 DK BLU/ 24 -- -- Not Used 1231 AT ISS Low Signal (4WD w/mt1) 25 TAN 472 IAT Sensor Signal 26 PPL 2121 IC 1 Control 27 RED 2127 IC 7 Control 28 LT BLU/ 2126 IC 6 Control 29 DK GRN/ 2124 IC 4 Control 30 -- -- Not Used 31 YEL 492 MAF Sensor Signal
32 LT GRN 432 MAP Sensor Signal 33 -- -- Not Used 34 DK GRN/ 428 EVAP Canister Purge Solenoid Control 35 121 Engine Speed Signal (HP2) 36-38 -- -- Not Used 39 RED 631 12 Volt Reference 40 BLK/ 451 Ground 41 -- -- Not Used 42 TAN/BLK 422 TCC Solenoid Valve Control (M30/M32) 43 DK GRN/ 459 44 -- -- Not Used 45 A/C Compressor Clutch Relay Control (A/C) 1310 EVAP Canister Vent Solenoid Control (EVA) 46 BRN/ 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/ 817 Vehicle Speed Signal 51 YEL/BLK 1227 TFT Sensor Signal (A/T) 52 53 54 BRN 2391 HO2S Heater Low Control Bank 1 Sensor 2 RED/ 3223 HO2S Heater Low Control Bank 2 Sensor 2 PPL/ 1589 Fuel Level Sensor Signal - Primary (Except HP2) PPL 1589 Fuel Level Sensor Signal - Primary (HP2) 55-56 -- -- Not Used 57 BLK 552 Low Reference 58 TAN/ 332 Oil Pressure Sensor Signal 59 PPL 806 Crank Voltage 60 BRN 2129 Low Reference 61 BRN/ 2130 Low Reference 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/ 2128 IC 8 Control 67 RED/ 2122 IC 2 Control 68 DK GRN 2125 IC 5 Control 69 LT BLU 2123 IC 3 Control 70 TAN/ 2500 High Speed GMLAN Serial Data + (HP2) 71 TAN 2501 High Speed GMLAN Serial Data - (HP2) 72 BLK/ 3113 73 HO2S Heater Low Control Bank 1 Sensor 1 DK BLU 1936 Fuel Level Sensor Signal - Secondary (w/dual Tanks) 74 LT GRN 3212 75 HO2S Heater Low Control Bank 2 Sensor 1 GRY 23 Generator Field Duty Cycle Signal (Except HP2) 76-79 -- -- Not Used 80 BLK 2751 Low Reference (A/C)