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These are the RED & BLUE PCM connector pinouts that will cover 1997-98 Corvette, and 1998 F-Body ONLY . Your harness MAY NOT have a pin in a location I have listed having a wire.  I have tried to list all possible wires that will show up 97-98.  If I show a wire, and your harness does not have it, you probably don't need it anyway. This INFO is 1998 F-Bdoy SPECIFIC, 97,98 Corvette should be very close, pay attention to location of 5v references and ground references.

BLOCKS HIGHLIGHTED LIKE THIS, ARE WIRES THAT ARE NEEDED, AND GO TO EXTERNAL CONNECTION FOR STAND ALONE

BLOCKS HIGHLIGHTED LIKE THIS, ARE WIRES THAT CAN BE REMOVED FROM PCM CONNECTORS, NOT NEEDED.

Note: Removing all of these will result in a non-emissions friendly harness.  If requirements are for 4 oxygen sensors, EVAP system, and EGR, then you will not want to remove those components.  Any wire NOT highlighted does not get touched, its required for proper engine/transmission control.

1997-98 Y,F-Body LS1 PCM Connector C1 - RED

Pin Wire Color Circuit No. Function
1 -- -- Not Used
2 -- -- Not Used
3 WHT 1310 EVAP Canister Vent Sol Valve
4 BRN/WHT 633 Camshaft Position Sensor Signal
5 -- -- Not Used
6 -- -- Not Used
7 YEL 400 VSS High Signal
8 -- -- Not Used
9 PNK/BLK 1746 Inj #3 Control
10 -- -- Not Used
11 DK BLU 229 VTD Fuel Enable
12 LT BLU/BLK 844 Inj #4 Control
13 RED/WHT 2122 Coil #2 Control 
14 DK GRN 59 A/C Status
15 BLK/WHT 845 Inj #5 Control
16 --    
17 --    
18 YEL/BLK 846 Inj #6 Control
19 --    
20 --    
21 PPL 719 IAT Sensor Ground
22 DK BLU 1225 Trans Range Signal B
23 LT GRN/BLK 1745 Inj #2 Control
24 BLK/WHT 1704 Sensor Ground Jumper
25 PNK 1224 Trans Range Signal A
26 --    
27 RED/BLK 877 Inj #7 Control
28 --    
29 --    
30 GRY/BLK 1687 Spark Retard Signal
31 DK BLU/WHT 878 Inj #8 Control
32 ORN/BLK 434 PNP Switch Signal
33 BLK 1744 Inj #1 Control
34 GRY or WHT 587 or 687 Skip Shift Sol (M/T) or 3-2 Shift Sol (AT)
35 LT GRN 1222 1-2 Shift Sol 
36 DK/BLU 1936 Fuel Gauge Output Control
37 BRN/WHT 419 MIL Control
38 -- -- Not Used
39 DK GRN/WHT 459 A/C Clutch Relay Control
40 WHT or YEL/BLK 375 or 1223 Skip Shift Lamp Control (M/T) or 2-3 Shift Sol
41 BRN/WHT 1173 Low Oil Lamp Control
42 LT GRN 1652 Reverse Inhibit Sol Control
43 DK/GRN 335 Cooling Fan 1 Relay
44 YEL 573 Crank Position Sensor Signal
45 DK GRN/WHT 428 EVAP Canister Purge Valve Control
46 -- -- Not Used
47 DK GRN/WHT 762 A/C Request Signal
48 YEL 492 MAF Signal
49 PPL 2121 Coil #1 Control
50 -- -- Not Used
51 -- -- Not Used
52 PPL/WHT 2128 Coil #8 Control
53 RED 2127 Coil #7 Control
54 LT BLU/WHT 2126 Coil #6 Control
55 DK GRN/WHT 817 VSS Output Signal
56 DK GRN 2125 Coil #5 Control
57 DK GRN/WHT 2124 Coil #4 Control
58 LT BLU 2123 Coil #3 Control
59 BRN/WHT 2130 Coil Control Low Ref Bank 2
60 BRN 2129 Coil Control Low Ref Bank 1
61 RED 1226 Trans Range Signal C
62 BLK 552 Ground Ref (EGR Pintle Position)
63 BLK 407 Ground Ref (A/C Refrigerant Pressure Sensor)
64 -- -- Not Used
65 -- -- Not Used
66 -- -- Not Used
67 -- -- Not Used
68 -- -- Not Used
69 -- -- Not Used
70 -- -- Not Used
71 PPL 401 VSS Signal Low
72 BLK 451 PCM Ground
73 -- -- Not Used
74 -- -- Not Used
75 GRY 720 Left & Right Fuel Level Sensor Ground
76 BLK 451 PCM Ground
77 PPL 420 TCC/Brake Switch Signal
78 -- -- Not Used
79 -- -- Not Used
80 -- -- Not Used

 

1997-98 Y,F-Body LS1 PCM Connector C2 - BLUE

Pin Wire Color Circuit No. Function
1 TAN 1671 HO2S Signal Low B2S2
2 TAN/WHT 1669 HO2S Signal Low B1S2
3 TAN 800 Serial Data (Uart) (not f-body???)
4 RED 631 Camshaft Position Sensor B+ Supply
5 TAN 1667 HO2S Signal Low B2S1
6 TAN/WHT 1653 HO2S Signal Low B1S1
7 RED/BLK 380 A/C Refrigerant Pressure Sensor Signal
8 TAN 472 IAT Sensor Signal
9 BRN 1456 EGR Pintle Position Sensor Signal
10 PPL 30 Fuel Level Sensor Signal
11 -- -- Not Used
12 DK BLU 417 TP Sensor Signal
13 YEL/BLK 1227 Trans Fluid Temp Sensor Signal
14 ORN/BLK 1057 Trans Fluid Temp Sensor Ground
15 -- -- Not Used
16 -- -- Not Used
17 -- -- Not Used
18 -- -- Not Used
19 PNK 439 PCM Ignition 1 Feed
20 ORN 340 PCM Battery Feed
21 BLK 451 PCM Ground
22 YEL/BLK 1868 Crank Position Sensor Ground
23 BLK 452 TP Sensor Ground
24 BLK/WHT 1704 Sensor Ground Jumper
25 BRN 718 ECT Sensor Ground
26 ORN/BLK 469 MAP Sensor Ground
27 -- -- Not Used
28 DK BLU 473 Cooling Fan 2 Relay Control
29 -- -- Not Used
30 BRN 436 AIR Pump Relay Control
31 PPL 421 AIR Solenoid Relay Control
32 TAN/BLK 422 TCC Enable Solenoid
33 BRN 418 TCC (PWM) Solenoid
34 GRY 435 EGR Valve Ground
35 WHT 121 Engine Speed Signal (TACH)
36 LT BLU/WHT 1229 Trans Fluid Pressure Control Sol Low
37 DK GRN/WHT 465 Fuel Pump Relay Control
38 LT BLU 697 EGR Valve Control Circuit
39 RED/BLK 1228 Trans Fluid Pressure Control Sol High
40 -- -- Not Used
41 PPL 1670 HO2S Signal High B2S2
42 PPL/WHT 1668 HO2S Signal High B1S2
43 GRY 596 TP Sensor 5V Reference
44 -- -- Not Used
45 -- -- Not Used
46 PPL 1666 HO2S Signal High B2S1
47 PPL/WHT 1665 HO2S Signal High B1S1
48 LT GRN 432 MAP Sensor Signal
49 YEL 410 ECT Sensor Signal
50 -- -- Not Used
51 -- -- Not Used
52 DK GRN 890 Fuel Tank Pressure Sensor Signal
53 -- -- Not Used
54 LT GRN/BLK 444 IAC Coil B Low
55 LT BLU/BLK 1748 IAC Coil A Low
56 LT BLU/WHT 1747 IAC Coil A High
57 LT GRN/WHT 1749 IAC Coil B High
58 PPL 1807 Serial Data (Class 2)
59 -- -- Not Used
60 BLK 451 PCM Ground
61 ORN 340 PCM Battery Feed
62 LT GRN 1867 Crank Position Sensor B+ Supply
63 -- -- Not Used
64 GRY 416 MAP Sensor 5V Reference
65 GRY 705 5V Reference (EGR Valve)
66 GRY 474 5V Reference (A/C Refrigerant Pressure Sensor )
67 GRY 598 5V Reference (Fuel Tank Pressure)
68 LT BLU 1876 Knock Sensor Rear
69 DK BLU 496 Knock Sensor Front
70 PNK/BLK 632 Camshaft Position Sensor Ground
71 -- -- Not Used
72 -- -- Not Used
73 -- -- Not Used
74 -- -- Not Used
75 -- -- Not Used
76 BRN 1174 Oil Level Sensor Signal
77 -- -- Not Used
78 -- -- Not Used
79 -- -- Not Used
80 -- -- Not Used