Info: 2001 GMC Wiring Diagram Needed

[WisconsinHick1]

I am in need of a wiring diagram for the center section of the fuse box under the hood.

 

[ryan415]

Junction Block - Underhood C2

Connector Part Information

• 12193906
• 68-Way F Metri-Pack 280 Series (BLK)

Pin
Wire Color
Circuit No.
Function
A1–A2
—
—
Not Used
A3
DK BLU
604
A/C High Pressure Recirculation Switch Signal
A4–A7
—
—
Not Used
A8
ORN
440
Battery Positive Voltage
A9
LT GRN
24
Backup Lamp Supply Voltage
A10
LT BLU
1320
CHMSL Supply Voltage
A11
GRY/BLK
2219
FICM Relay Control
A12
—
—
Not Used
B1–B2
—
—
Not Used
B3
DK GRN
59
A/C Compressor Clutch Supply Voltage
B4
—
—
Not Used
B5
LT BLU
203
A/C Request Signal
B6
PNK
239
Ignition 1 Voltage
B7
DK GRN/WHT
465
Fuel Pump Relay Control [- Primary]
B8
ORN
440
Battery Positive Voltage
ORN
440
Battery Positive Voltage
B9
PNK
1339
Ignition 1 Voltage
B10–B12
—
—
Not Used
C1–C3
—
—
Not Used
C4
PNK
239
Ignition 1 Voltage
C5–C9
—
—
Not Used
C10
PNK
1039
Ignition 1 Voltage
PNK
1039
Ignition 1 Voltage
C11
PNK
439
Ignition 1 Voltage
PNK
1039
Ignition 1 Voltage (Diesel)
C12
PNK
1239
Ignition 1 Voltage
PNK
1239
Ignition 1 Voltage
D1
BLK/WHT
1695
Axle Switch Signal
D2
—
—
Not Used
D3
DK GRN/WHT
459
A/C Clutch Relay Control
D4–D7
—
—
Not Used
D8
PNK
539
Ignition 1 Voltage
PNK
539
Ignition 1 Voltage
D9
PNK
639
Ignition 1 Voltage
D10
PNK
1039
Ignition 1 Voltage
PNK
1039
Ignition 1 Voltage
D11
PPL
6
Starter Solenoid Crank Voltage
D12
BLK
550
Ground
E1
BLK/WHT
1695
Axle Switch Signal
BLK/WHT
1695
Axle Switch Signal
E2
PNK
1020
Off/Run/Crank Voltage
PNK
1020
Off/Run/Crank Voltage
E3
LT GRN
275
Park Neutral Position Switch Park Signal
E4–E5
—
—
Not Used
E6
PNK
1239
Ignition 1 Voltage
E7
PNK
1239
Ignition 1 Voltage
PNK
1239
Ignition 1 Voltage
E8
PNK
1539
Ignition 1 Voltage
PNK
1539
Ignition 1 Voltage
PNK
439
Ignition 1 Voltage (Diesel)
E9–E11
—
—
Not Used
E12
PNK
1039
Ignition 1 Voltage
F1
—
—
Not Used
F2
PNK
1020
Off/Run/Crank Voltage
PNK
1020
Off/Run/Crank Voltage
F3
LT GRN/BLK
584
A/T Shift Lock Control Switch Supply Voltage
F4
ORN
3440
Battery Positive Voltage
F5
—
—
Not Used
F6
BLK/WHT
451
Ground
F7
BLK
550
Ground
F8
—
—
Not Used
F9
PNK
839
Ignition 1 Voltage
F10
PPL/WHT
1035
Starter Relay Coil Supply Voltage
F11
PPL/WHT
1035
Starter Relay Coil Supply Voltage (M/T)
YEL
1737
Starter Relay Coil Supply Voltage (A/T)
F12
—
—
Not Used


I believe that is connector C2 (black). Hope this helps, I know it's kind of hard to read.

 

[WisconsinHick1]

That should work thank you! :thumb:

 

[ryan415]

No problem, glad it helped.

 

[WisconsinHick1]

Would anyone happen to have the pinouts for the TCM?

 

[ryan415]

Transmission Control Module (TCM) C1

Connector Part Information

• 15305371
• 32-Way F Micro-Pack 100W Series (GRY)

Pin
Wire Color
Circuit No.
Function
1
BLK/WHT
451
Ground
2
PNK
1020
Off/Run/Crank Voltage
3
ORN
440
Battery Positive Voltage
4
PNK
1020
Off/Run/Crank Voltage
5
BLK/WHT
451
Ground
6
YEL
2522
Power Take Off (PTO) Reference Voltage
7
PPL
420
TCC Brake Switch/ Cruise Control Release Signal
8
—
—
Not Used
9
WHT
2467
Unmanaged Torque Signal
10
GRY/BLK
1694
4WD Low Signal
11–15
—
—
Not Used
16
TAN/BLK
464
Delivered Torque Signal (Gas Only)
17–21
—
—
Not Used
22
ORN/BLK
463
Requested Torque Signal
23–24
—
—
Not Used
25
DK BLU
2687
Transmission MIL Request Signal
26
—
—
Not Used
27
YEL
400
Signal High - Front
28
—
—
Not Used
29
YEL
2361
CAN Data Link Signal HI
30
YEL
2470
Class 2 Serial Data
31
—
—
Not Used
32
DK GRN
2362
CAN Data Link Signal LO
Transmission Control Module C2

Connector Part Information

• 15305371
• 32-Way F Micro-Pack 100W Series (RED)

Pin
Wire Color
Circuit No.
Function
1
PNK
1224
Fluid Pressure Switch Signal C
2
DK BLU
1225
Fluid Pressure Switch Signal D
3
RED
1226
Fluid Pressure Switch Signal E
4
LT GRN/BLK
2529
Fluid Pressure Switch Reverse Signal
5
BLK/WHT
771
Transmission Range Switch Signal A
6
YEL
772
Transmission Range Switch Signal B
7
GRY
773
Transmission Range Switch Signal C
8
WHT
776
Transmission Range Switch Signal P
9
—
—
Not Used
10
YEL/BLK
1227
TFT Sensor Signal
11–12
—
—
Not Used
13
ORN
1983
Transmission Turbine Speed Switch Signal
14
LT BLU
1984
Transmission Turbine Speed Switch Low Reference
15
PPL/WHT
821
Vehicle Speed Signal HI
16
LT GRN/BLK
822
Vehicle Speed Signal LO
17
RED/BLK
1230
AT ISS Signal High
18
DK
BLU/WHT
1231
AT ISS Signal Low
19
—
—
Not Used
20
BLK
2762
Low Reference
21
PPL
2471
Trans ID
22
LT BLU/WHT
1229
PPC Solenoid A Valve High Control
23
RED/BLK
1228
PPC Solenoid A Valve Low Control
24
PNK/BLK
2468
PPC Solenoid B Valve High Control
25
BRN/WHT
2469
PPC Solenoid B Valve Low Control
26
LT GRN
1222
Shift Solenoid C Valve Control
27
YEL/BLK
1223
Shift Solenoid D Valve Control
28
ORN/WHT
2527
Shift Solenoid E Valve Control
29
BRN
418
TCC PWM Solenoid Valve Control
30
—
—
Not Used
31
BRN
323
12 Volt Reference
32
DK
GRN/WHT
2528
TCC PWM Solenoid Supply Voltage

 

[ryan415]

Sorry, I know it's hard to read but I had to copy and paste it as it won't let me make a link. Hope it helps.

 

[WisconsinHick1]

This works just fine Ryan I am just putting it into a word document and printing it out thank you again!

 

[ryan415]

No problem. Glad I could help!

 

[WisconsinHick1]

It worked thank you again Ryan!

 

[mgramke1]

subd as i may need this today