rharris19

Here are some engine harness diagrams for the 99-02 LS1 harness. I am going to be using it to make my stand alone harness and thought some others may find use of it.









































How to Read them:


These are all from LS1tech which seems to be a great resource for us as well. There are some knowledgeable people over there.

Original Thread

chpmnsws6

http://www.ls2.com/boggs/torques/99pinpcm.htm

PCM pinout in case anyone is picking their harness clean.

chpmnsws6

More pinouts at this site-
http://chevythunder.com/

rharris19

Thanks for the additions

fmowry

'04 GTO pinouts. Had these in doc files but can't upload so it's cut and paste. sorry for the poor formatting. if you want the doc files, PM me:

Connector Part InformationPCM Connector C1 92231110
80-Way Micro-Pack 100W Series Sealed (BU)

PinWire ColorCircuit No.Function
1 BK/RD450Ground
2 L-BU/WH286712-Volt Reference - CKP Sensor
3 PU1746Fuel Injector 3 Control
4 GN1745Fuel Injector 2 Control
5-6----Not Used
7 BU/YE5965-Volt Reference - EOP Sensor
8 GY27015-Volt Reference - TP Sensor
9-10----Not Used
11 L-BU1876KS 2 Signal
12 L-BU573CKP Sensor Signal
13-16----Not Used
17 YE1225Transmission Fluid Pressure Switch Signal B
18 GY1226Transmission Fluid Pressure Switch Signal C
19 OG300Ignition 3 Voltage
20 OG740Battery Positive Voltage
21 L-BU/BK574Low Reference - CKP Sensor
22----Not Used
23 BK2759Low Reference - FTP Sensor and Fuel Level Sensor
24 BK/RD450Ground
25 TN1671HO2S Low Signal Bank 2 Sensor 2
26 GY/BK1667HO2S Low Signal Bank 2 Sensor 1
27 BK/RD450Ground
28 TN/WH1669HO2S Low Signal Bank 1 Sensor 2
29 BU/BK1664HO2S Low Signal Bank 1 Sensor 1
30 GN68Engine Coolant Level Signal
31----Not Used
32 BU/WH771Transmission Range Switch Signal A
33 BN86Cruise Control Release Signal
34 WH776Transmission Range Switch Signal P
35----Not Used
36 BU1744Fuel Injector 1 Control
37 YE846Fuel Injector 6 Control
38-39----Not Used
40 BK/RD450Ground
41-42----Not Used
43 PK/BK877Fuel Injector 7 Control
44 BN/YE844Fuel Injector 4 Control
45 PU/WH27005-Volt Reference - A/C Refrigerant Pressure Sensor
46 GY27095-Volt Reference - FTP Sensor
47----Not Used
48 PU/WH27045-Volt Reference - MAP Sensor
49-50----Not Used
51 BU496KS 1 Signal
52----Not Used
53 BK/WH2762Low Reference - TFT Sensor
54 BK469Low Reference - MAP Sensor
55-56----Not Used
57 OG740Battery Positive Voltage
58 YE1045RFA Class 2 Serial Data
59----Not Used
60 BK/YE2752Low Reference - TP Sensor
61 RD/WH632Low Reference - CMP Sensor
62----Not Used
63 GN470Low Reference - EOP Sensor
64 BK/RD450Ground
65 PU/BK1670HO2S High Signal Bank 2 Sensor 2
66 GY1666HO2S High Signal Bank 2 Sensor 1
67 BK/RD450Ground
68 PU/WH1668HO2S High Signal Bank 1 Sensor 2
69 PU1665HO2S High Signal Bank 1 Sensor 1
70-71----Not Used
72 YE/RD772Transmission Range Switch Signal B
73 BN633Camshaft Position Signal
74 YE410ECT Sensor Signal
75----Not Used
76 GY845Fuel Injector 5 Control
77 L-GN878Fuel Injector 8 Control
78----Not Used
79 GN/WH or GY898 or 587Shift Solenoid Valve 3 High Control - Skip/Shift Solenoid Control
80 GY/BK2761Low Reference - ECT Sensor
PCM Connector C2



Connector Part InformationPCM Connector C2 92231110
80-Way Micro-Pack 100W Series Sealed (GN)

PinWire ColorCircuit No.Function
1 BK/RD450Ground
2 BN418TCC PWM Solenoid Valve Control
3-5----Not Used
6 RD1228PC Solenoid Valve High Control Sol.A
7----Not Used
8 GY/BU1229PC Solenoid Valve Low Control Sol.A
9 GN/WH465Fuel Pump Relay Control Primary
10 BN121Engine Speed Signal - Tachometer
11----Not Used
12 GY/BK1687Ignition Retard Signal, from EBCM
13----Not Used
14 GN/BK380A/C Refrigerant Pressure Sensor Signal
15-17----Not Used
18 GN59A/C Compressor Clutch Supply Voltage
19----Not Used
20 TN1231AT ISS Low Signal
21 BU/WH1230AT ISS High Signal
22-23----Not Used
24 BU411TP Sensor Signal
25 BN472IAT Sensor Signal
26 WH2121IC 1 Control
27 YE2127IC 7 Control
28 L-GN2126IC 6 Control
29 WH2124IC 4 Control
30----Not Used
31 BN/WH492MAF Sensor Signal
32 L-GN432MAP Sensor Signal
33 BU/WH473High Speed Cooling Fan Relay Control
34 GN/YE428EVAP Canister Purge Solenoid Control
35-38----Not Used
39 WH/BK63112-Volt Reference - CMP Sensor
40 BK/RD450Ground
41----Not Used
42 GY/RD422TCC Solenoid Valve Control
43 L-GN/BK459A/C Clutch Relay Control
44 YE1652Reverse Lock Out Solenoid Control
45 WH1310EVAP Canister Vent Solenoid Control
46 BN/WH419MIL Control
47 YE/BK12232-3 Shift Solenoid Valve Control
48 L-GN12221-2 Shift Solenoid Valve Control
49----Not Used
50 PU/WH5197VSS Signal
51 YE/BK1227TFT Sensor Signal
52 L-BU1150HO2S Bank 1 Sensor 2 Heater Control
53 RD/WH1350HO2S Bank 2 Sensor 2 Heater Control
54 PU30Fuel Level Sensor Signal
55-56----Not Used
57 GN/OG5514Low Reference - IAT Sensor and A/C Refrigerant Pressure Sensor
58 BN/WH331Engine Oil Pressure (EOP) Sensor Signal
59----Not Used
60 BN2129Low Reference - Ignition Coils Bank 1
61 PU2130Low Reference - Ignition Coils Bank 2
62 GY773Transmission Range Switch Signal C
63 BN/YE1224Transmission Fluid Pressure Switch Signal A
64 D-GN890Fuel Tank Pressure (FTP) Sensor Signal
65----Not Used
66 L-BU2128IC 8 Control
67 YE/BK2122IC 2 Control
68 GN2125IC 5 Control
69 BU2123IC 3 Control
70-71----Not Used
72 BK/WH1050HO2S Bank 1 Sensor 1 Heater Control
73----Not Used
74 L-GN/RD1250HO2S Bank 2 Sensor 1 Heater Control
75----Not Used
76 L-GN/WH1749IAC Coil B High Control
77 L-GN/BK444IAC Coil B Low Control
78 L-BU/BK1748IAC Coil A Low Control
79 L-BU1747IAC Coil A High Control
80----Not Used