Jake Harsha

Hey all, I'm putting an LQ4 from a 2007 Chevy 2500 HD into my old Jeep. I'm not afraid of doing my own harness, but I don't want to buy $130 worth of field service manuals to do so...

Does anyone know somewhere online where I could get access to the pin-outs and/or wiring diagrams for this year/model of pickup?


Thanks!
Jake

Old Geezer

iTrader: (3)

www.alldatadiy.com... You can buy a 1 yr sub, for about $30.00 LOTS of good info, and it can be printed out.

V8Rumble

iTrader: (9)

This link might help as well, depending on how much is common between the LQ4 & the L92... (I'd think that GM would try to standardize as much as they're able to, but I certainly wouldn't bet everything on it...)

Good luck.

jfg455

iTrader: (5)

here is the first connector at the PCM. Give pin #, then color, then circut, then function...Should tell you where everything goes

Description: 73-Way F Receptacle 0.64 2.8 Sealed (BK)

Engine Control Module X1 Pin
Wire Color
Circuit No.
Function

1
0.35 OG/BK
1786
Park/Neutral Signal

2
0.5 GY/BK
1694
4WD Low Signal (NQG/NP2)

3
0.5 TN/WH
1695
Axle Switch Signal (NQG/NP2)

4-8
--
--
Not Used

9
0.5 L-BU/WH
6311
Brake Switch 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
0.35 OG/BK
380
A/C Refrigerant Pressure Sensor Signal (CJ2/C67)

13
0.35 TN
5514
Low Reference (CJ2/C67)

14-15
--
--
Not Used

16
0.35 PU
1589
Fuel Level Sensor Signal - Primary

17
0.35 D-BU/WH
473
High Speed Cooling Fan Relay Control (-LY6)

18
0.5 D-BU
5985
Accessory Wakeup Serial Data

19
0.5 PK
439
Ignition 1 Voltage

20
0.5 RD/WH
440
Battery Positive Voltage

21-22
--
--
Not Used

23
0.35 PU
1272
Low Reference

24
0.35 D-GN
890
Fuel Tank Pressure Sensor Signal

25-26
--
--
Not Used

27
0.5 TN/BK
2501
High Speed GMLAN Serial Data Bus-

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

29
0.35 D-BU
1161
APP Sensor 1 Signal

30
0.35 BN
1271
Low Reference

31
0.35 TN/BK
6049
Low Reference

32
0.35 L-BU
1162
APP Sensor 2 Signal

33
0.35 GY
2709
5-Volt Reference 1

34
0.35 GY/WH
2700
5-Volt Reference (CJ2/C67)

35
--
--
Not Used

36
0.35 TN
1274
5-Volt Reference 1

37
0.5 TN/BK
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/BK
1339
Ignition 1 Voltage

48
--
--
Not Used

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

50
0.35 D-GN/WH
465
Fuel Pump Relay Control - Primary (LGM/LY6/LC9)

Fuel System Control Module Signal (-LGM/LY6/LC9)

51
0.35 TN
1465
Fuel Pump Relay Control - Secondary (LY6)

52
0.5 YE/BK
625
Starter Enable Relay Control

53-55
--
--
Not Used

56
0.35 WH/BK
1164
5-Volt Reference 2

57
0.35 YE/BK
1827
Vehicle Speed Signal

58
0.35 D-GN
335
Low Speed Cooling Fan Relay Control (-LY6)

59
0.35 YE
5991
Powertrain Relay Coil Control

60
--
--
Not Used

61
0.5 WH
1310
EVAP Canister Vent Solenoid Control

62
--
--
Not Used

63
0.35 D-GN/WH
459
A/C Compressor Clutch Relay Control (CJ2/C67)

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
0.35 BN/WH
419
MIL Control

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

70
0.35 L-BU
1937
Secondary Fuel Level Sensor Signal (LY6)

71
0.5 PU/WH
821
VSS High Signal (20/30 Series +NQF/+NQG/+NP2)

0.35 OG/BK
6399
Replicated TOS Signal (10 Series/20/30 Series -NQF/-NQG/-NP2)

72
0.5 L-GN/BK
822
VSS Low Signal (20/30 Series +NQF/+NQG/+NP2)

73
3.0 BK/WH
451
Ground


Here is the second PCM connector......................................... .......

Description: 80-Way F Receptacle 0.64 2.8 Sealed (GY)

Engine Control Module X2 Pin
Wire Color
Circuit No.
Function

1
--
--
Not Used

2
0.35 PU/WH
6270
5-Volt Reference 2

3
0.35 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
0.5 D-GN/WH
428
EVAP Canister Purge Solenoid Control

9
0.5 GY
5493
Cylinder 6 Shutoff Solenoid Control 3 (-4.8L)

10
0.5 D-BU
5491
Cylinder Shutoff Solenoid Control (1) (-4.8L)

11
0.5 OG
5494
Cylinder 4 Shutoff Solenoid Control 2 (-4.8L)

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
0.5 L-GN/BK
5492
Cylinder 7 Shutoff Solenoid Control 4 (-4.8L)

15
--
--
Not Used

16
0.35 PU
5284
Camshaft Actuator Solenoid Control (6.0L/6.2L)

17
0.5 D-BU/WH
878
Fuel Injector 8 Control

18
0.5 TN/WH
845
Fuel Injector 5 Control

19
0.5 YE/BK
846
Fuel Injector 6 Control

20
0.5 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
KS 1 Signal

27
0.8 GY
1716
KS 1 Signal

28
--
--
Not Used

29
0.8 L-BU
1876
KS 2 Signal

30
0.8 GY
2303
KS 2 Signal

31
--
--
Not Used

32
0.5 GY
23
Generator Field Duty Cycle Signal

33
0.5 BN
1174
Oil Level Switch Signal

34
0.35 BK
2755
Low Reference

35
0.35 TN
2752
Low Reference

36
--
--
Not Used

37
0.5 L-GN/BK
1745
Fuel Injector 2 Control

38
0.5 PK/BK
1746
Fuel Injector 3 Control

39
0.5 L-BU/BK
844
Fuel Injector 4 Control

40
0.5 OG/BK
877
Fuel Injector 7 Control

41
0.35 GY
2705
5-Volt Reference 1

42
--
--
Not Used

43
0.35 GY
2704
5-Volt Reference 1

44
0.35 D-BU
6259
5-Volt Reference 1

45-49
--
--
Not Used

50
0.35 TN/WH
331
Oil Pressure Sensor Signal

51
--
--
Not Used

52
0.35 TN
2199
Low Reference (6.0L/6.2L)

53
0.35 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
0.35 L-GN
432
MAP Sensor Signal

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

60
0.5 TN
1667
H02S Low Signal - Bank 2 Sesnor 1

61
0.5 BN
25
Charge Indicator Signal

62
--
--
Not Used

63
0.35 PU
486
TP Sensor 2 Signal

64
0.35 D-BU/WH
6265
CMP Sensor Signal

65
0.35 D-GN
485
TP Sensor 1 Signal

66
0.35 BN
6266
Low Reference

67
--
--
Not Used

68
0.35 WH/BK
6271
CKP Sensor Signal

69
0.35 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

eagleuh1

Second for AlldataDIY.com. I used them for both donor and reciever car. Just make sure you download everything you can before your year is up. I didn't, hence my post for a connector diagram for 2005 5.3 Suburban. Good luck.

Jake Harsha

THANKS! I'll have to check this alldata thing out...


Jake