anyone know where I can find these?

 

If you get lucky someone here might have them. You could also try talking to a tech at the dealer, if he`s really nice he might print them out for you(don`t hold your breath on this one, its never worked for me). Or you can always get an alldata.com account, they will have all the pinouts/diagrams you will need, but they charge for it .

 

Alldata. Not too expensive and everything is there that I needed. My hometown Chevy service man was extremely helpful, gave me all the printouts for the 2005 5.3 that I have. Maybe rare, but in this case, it happened. Russellville Arkansas. Went to alldata anyways, and got accounts for all my vehicles.

 

the pin out should be the same as an ls1. they use the same computer. it should be easy to find the pinout for that engine.

 

http://www.fbody.com/tech/details.cgi?id=55

these should work. note that these are from a 1998 ls1 so there my be slight diffrences.

 

'03 4.8L

Connector Part Information
• 12191489

• 80 way F Micro-Pack 100 Series (BLU)

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

8-10
--
--
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

15
DK BLU/

WHT
774
UART Serial Data

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
Low Reference

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

41-42
--
--
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
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
--
--
Not Used

61
PNK/BLK
632
Low Reference

62
--
--
Not Used

63
BLK
2755
Low Reference

64
BLK/WHT
451
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
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

__________________________________________________ _______________

Connector Part Information
• 12191488

• 80 way F Micro-Pack 100 Series (GRN)

Pin
Wire Color
Circuit No.
Function

1
BLK/WHT
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/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

11-13
--
--
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
--
--
Not Used

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

34
DK GRN/

WHT
428
EVAP Canister Purge Solenoid Control

35-38
--
--
Not Used

39
RED
631
12 Volt Reference

40
BLK/WHT
451
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

55-56
--
--
Not Used

57
BLK
552
Low Reference

58
TAN/WHT
332
Oil Pressure Sensor Signal

59
PPL
806
Crank Voltage

60
BRN
2129
Low Reference

61
BRN/WHT
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/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

70-71
--
--
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

76-79
--
--
Not Used

80
BLK
2751
Low Reference (A/C)

 

The 97/98 pinouts are very different from the 99+. Out of the ~100+ pins in the two PCM connectors there are probably 6 that are in the same positions between the 98 and 99+ computers. Please don`t try to rewire a 99+ harness with a 98 pinout sheet, it will drive you nuts.