Dan_W

Just as the title says... looking for the diagram and pinout. Can anyone help with this?

alocker

iTrader: (10)

The only free E38 info that I know of is here. Its for the vette but it might get you started.

http://www.ls2.com/forums/showthread...hreadid=405808

V8Rumble

iTrader: (9)

I've got some printouts from a local dealership (for the '08 Yukon/Tahoe series of trucks), but they printed out so small that I'd have to use a flatbed scanner to digitize them, & then see if I could resize them to at least 150% of what they are now...

1939 Ford

I have been down that road. You will figure out some things but a lot of things don't match up. I went to alldatadiy.com. twenty some odd dollars for a year subscription. you can print all you want. Or you can go to repairprocedures.com and get one day for free.

V8Rumble

iTrader: (9)

NICE tip!! (I think I'll spend the $5.00 & get the '7 Day Subscription to a Single Vehicle'.)

Dan_W

I checked the parts cross reference and the computer for the Hummer was the same as 08 impala, G6, and 1500/2500 GM trucks. Since the computer is the same, wouldn't the pinouts be the same?

I found an 08 silverado diagram here in the link below. Thoughts?

https://ls1tech.com/forums/pcm-diagn...silverado.html

jfg455

iTrader: (5)

here is the ECU pin out first connector......................................... ............

Service: 88988931
Description: 73-Way F MX123 34566 Series, Sealed (BK)



Engine Control Module (ECM) X1 Pin
Wire
Circuit
Function

1
0.5 OG/BK
1786
Park/Neutral Signal

2-8
--
--
Not Used

9
0.5 L-BU/WH
6311
TCC Brake Signal

10
0.5 PU/WH
1668
HO2S High Signal - Bank 1 Sensor 2

11
0.5 TN/WH
1669
HO2S Low Signal - Bank 1 Sensor 2

12
0.5 OG/BK
380
A/C Refrigerant Pressure Sensor Signal

13
0.5 TN
5514
Low Reference

14-15
--
--
Not Used

16
0.5 PU
1589
Fuel Level Sensor Signal - Primary

17
0.5 D-BU
473
High Speed Cooling Fan Relay Control

18
0.5 D-BU
5985
Accessory Wakeup Serial Data

19
0.5 PK
439
Ignition Voltage

20
0.5 RD/WH
440
Battery Positive Voltage

21-22
--
--
Not Used

23
0.5 PU
1272
Low Reference

24
0.5 D-GN
890
Fuel Tank Pressure Sensor Signal

25- 26
--
--
Not Used

27
0.5 TN
2501
High Speed GMLAN Serial Data Bus -

28
0.5 TN/BK
2500
High Speed GMLAN Serial Data Bus+

29
0.5 D-BU
1161
APP Sensor 1 Signal

30
0.5 BN
1271
Low Reference

31
0.5 TN/BK
6049
Low Reference

32
0.5 L-BU
1162
APP Sensor 2 Signal

33
0.5 GY
2709
5-Volt Reference 1

34
0.5 GY
2700
5-Volt Reference 1

35
--
--
Not Used

36
0.5 TN
1274
5-Volt Reference 1

37
0.5 TN
472
IAT Sensor Signal

38
0.5 TN
2760
Low Reference

39-40
--
--
Not Used

41
0.5 YE
492
MAF Sensor Signal

42-46
--
--
Not Used

47
0.5 PK
1339
Ignition Voltage

48
--
--
Not Used

49
0.5 TN
1671
HO2S Low Signal - Bank 2 Sensor 2

50
0.5 D-GN/WH
465
Fuel Pump Relay Control - Primary

51
--
--
Not Used

52
0.5 YE/BK
625
Starter Enable Relay Control

53-55
--
--
Not Used

56
0.5 WH/BK
1164
5-Volt Reference 2

57
--
--
Not Used

58
0.5 D-GN
335
Low Speed Cooling Fan Relay Control

59
0.5 YE
5991
Powertrain Relay Coil Control

60
--
--
Not Used

61
0.5 WH
1310
EVAP Canister Vent Solenoid Control

62
--
--
Not Used

63
0.5 D-GN/WH
459
A/C Compressor Clutch Relay Control

64
0.5 OG/WH
3223
HO2S Heater Low Control - Bank 2 Sensor 2

65
0.5 GY/WH
3122
HO2S Heater Low Control - Bank 2 Sensor 1

66-67
--
--
Not Used

68
0.5 BN/WH
419
MIL Control

69
0.5 PU
1670
HO2S High Signal - Bank 2 Sensor 2

70
--
--
Not Used

71
0.5 PU/WH
821
VSS High Signal

72
0.5 L-GN/BK
822
VSS Low Signal

73
3 BK/WH
451
Ground

second connector......................................... .................................................

Description: 80-Way F MX123 Series, Sealed (GY)


Engine Control Module (ECM) X2 Pin
Wire
Circuit
Function

1
--
--
Not Used

2
0.5 PU/WH
6270
5-Volt Reference 2

3
0.5 GY
2701
5-Volt Reference 2

4
--
--
Not Used

5
0.5 BN
582
TAC Motor Control - 2

6
0.5 YE
581
TAC Motor Control - 1

7
--
--
Not Used

8
0.8 D-GN/WH
428
EVAP Canister Purge Solenoid Control

9-11
--
--
Not Used

12
0.5 GY/WH
3113
HO2S Heater Low Control - Bank 1 Sensor 1

13
0.5 L-GN
3212
HO2S Heater Low Control - Bank 2 Sensor 1

14-15
--
--
Not Used

16
0.5 PU
5284
Camshaft Actuator Solenoid Control

17
0.75 D-BU
878
Fuel Injector 8 Control

18
0.75 WH/BK
845
Fuel Injector 5 Control

19
0.75 YE/BK
846
Fuel Injector 6 Control

20
0.75 TN
1744
Fuel Injector 1 Control

21
0.5 YE
410
ECT Sensor Signal

22
0.5 TN
2761
Low Reference

23-25
--
--
Not Used

26
0.8 D-BU
496
Knock Sensor 1 Signal

27
0.8 GY
1716
Knock Sensor 1 Signal

28
--
--
Not Used

29
0.8 L-BU
1876
Knock Sensor 2 Signal

30
0.8 GY
2303
Knock Sensor 2 Signal

31
--
--
Not Used

32
0.5 GY
23
Generator Field Duty Cycle Signal

33
--
--
Not Used

34
0.5 BK
2755
Low Reference

35
0.5 TN
2752
Low Reference

36
--
--
Not Used

37
0.5 L-GN
1745
Fuel Injector 2 Control

38
0.5 RD/BK
1746
Fuel Injector 3 Control

39
0.75 D-BU/RD
844
Fuel Injector 4 Control

40
0.75 BK/OG
877
Fuel Injector 7 Control

41
0.5 GY
2705
5-Volt Reference 1

42
--
--
Not Used

43
0.5 GY
2704
5-Volt Reference 1

44
0.5 D-BU
6259
5-Volt Reference 1

45-49
--
--
Not Used

50
0.5 TN/WH
331
Oil Pressure Sensor Signal

51
--
--
Not Used

52
0.5 TN
2199
Low Reference

53
0.5 OG/BK
469
Low Reference

54-55
--
--
Not Used

56
0.5 TN
1664
HO2S Low Signal - Bank 1 Sensor 1

57
0.5 PU/WH
1665
HO2S High Signal - Bank 1 Sensor 1

58
0.5 L-GN
432
MAP Sensor Signal

59
0.5 PU
1666
HO2S High Signal - Bank 2 Sensor 1

60
0.5 TN
1667
HO2S Low Signal - Bank 2 Sensor 1

61
0.5 BN
25
Charge Indicator Control/Charge Indicator Signal

62
--
--
Not Used

63
0.5 PU
486
TP Sensor 2 Signal

64
0.5 D-BU/WH
6265
CMP Sensor Signal

65
0.5 D-GN
485
TP Sensor 1 Signal

66
0.5 BN
6266
Low Reference

67
--
--
Not Used

68
0.5 WH/BK
6271
CKP Sensor Signal

69
0.5 GY/BK
6272
Low Reference

70
0.5 PU
2121
IC 1 Control

71
0.5 PU/WH
2128
IC 8 Control

72
0.5 OG
2127
IC 7 Control

73
0.5 OG/WH
2122
IC 2 Control

74
0.5 L-BU/WH
2126
IC 6 Control

75
0.5 D-GN
2125
IC 5 Control

76
0.5 D-GN/WH
2124
IC 4 Control

77
0.5 L-BU
2123
IC 3 Control

78
0.5 BN
2129
Low Reference

79
0.5 BN/WH
2130
Low Reference

80
--
--
Not Used

jfg455

iTrader: (5)

as for the wiring diagrams, there are about 15 just for the motor. You would have to know exactly what system/sensor you needed to get the right schematic. G

V8Rumble

iTrader: (9)

jfg455, you're the man...

Thank you!

jfg455

iTrader: (5)

I wouldn't go that far!! I'm just another gear head workin for the General to get new GM parts at cost!!

Dan_W

Is that info out of the factory service manual?

I checked on the helm website and they are showing the 2008 H2 manual as temporarilly unavailable.

jfg455

iTrader: (5)

that is right from the GM factory website. I am a GM tech so we can look this stuff up.