GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Engine Controls Connector End Views
Table 1: Accelerator Pedal Position (APP) Sensor
Table 2: Automatic Transmission Input Shaft Speed (ISS) Sensor
Table 3: Crankshaft Position (CKP) Sensor
Table 4: Engine Coolant Temperature (ECT) Sensor
Table 5: Engine Oil Pressure (EOP) Sensor and Fuel Pump Switch
Table 6: Fuel Level Sensor (Single Tank)
Table 7: Fuel Pump
Table 8: Fuel Level Sensor - Primary (Dual Tanks)
Table 9: Fuel Level Sensor - Secondary (Dual Tanks)
Table 10: Fuel Pump - Secondary
Table 11: Fuel Balance Module (Dual Tanks)
Table 12: Fuel Balance Pump Relay (Dual Tanks)
Table 13: Fuel Heater
Table 14: Fuel Solenoid Driver
Table 15: Fuel Temperature Sensor
Table 16: Glow Plug Relay
Table 17: Injection Timing Stepper Motor
Table 18: Intake Air Temperature (IAT) Sensor
Table 19: Turbocharger Boost Sensor
Table 20: Turbocharger Wastegate Solenoid
Table 21: Vehicle Speed Sensor (VSS) - M/T
Table 22: Vehicle Speed Sensor (VSS) - A/T
Table 23: Vehicle Speed Sensor (VSS) Buffer
Table 24: Water In Fuel Sensor

Accelerator Pedal Position (APP) Sensor


Object Number: 570216 Size: CH

Connector Part Information
    • 12065425
    • 10 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BRN

1271

Low Reference

B

PPL

1272

Low Reference

C

LT BLU

1162

APP Sensor 2 Signal

D

TAN

1274

5 Volt Reference

E

YEL/BLK

1275

5 Volt Reference

F

DK BLU

1161

APP Sensor 1 Signal

G

WHT/BLK

1164

5 Volt Reference

H

--

--

Not Used

J

GRY

1273

Low Reference

K

DK GRN

1163

APP Sensor 3 Signal

Automatic Transmission Input Shaft Speed (ISS) Sensor


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

RED/BLK

1230

AT ISS High Signal

B

DK BLU/WHT

1231

AT ISS Low Signal

Crankshaft Position (CKP) Sensor


Object Number: 684807 Size: CH

Connector Part Information
    • 12110293
    • 3 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

573

CKP Sensor Signal

B

PPL

452

Low Reference

C

GRY

416

5 Volt Reference

Engine Coolant Temperature (ECT) Sensor


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

YEL

410

ECT Sensor Signal

B

BLK

452

Low Reference

Engine Oil Pressure (EOP) Sensor and Fuel Pump Switch


Object Number: 39663 Size: CH

Connector Part Information
    • 12065401
    • 4 Way F Metri-pack 150 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

31

Oil Pressure Indicator Control

B

--

--

Not Used

C

GRY

120

Fuel Pump Supply Voltage

D

ORN

440

Battery Positive Voltage

Fuel Level Sensor (Single Tank)


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2 Way M Weather-pack SHD Type (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B

PPL

30

Fuel Level Sensor Signal

Fuel Pump


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2 Way M Weather-pack SHD Type (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

GRY

120

Fuel Pump Supply Voltage

Fuel Level Sensor - Primary (Dual Tanks)


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2 Way M Weather-pack SHD Type (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B

DK BLU/WHT

970

Fuel Level Signal - Primary

Fuel Level Sensor - Secondary (Dual Tanks)


Object Number: 38608 Size: CH

Connector Part Information
    • 12162188
    • 4 Way F Metri-pack 150.2 Series P2S

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

451

Ground

B-C

--

--

Nor Used

D

LT BLU

975

Fuel Level Signal - Secondary

Fuel Pump - Secondary


Object Number: 258174 Size: CH

Connector Part Information
    • 12010973
    • 2 Way M Weather-pack SHD Type (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

150

Ground

B

LT GRN

1058

Fuel Balance Pump Supply Voltage

Fuel Balance Module (Dual Tanks)


Object Number: 535933 Size: CH

Connector Part Information
    • 12059573
    •  6 Way F Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

639

Ignition 1 Voltage

B

LT BLU

975

Fuel Level Signal - Secondary

C

DK BLU/WHT

970

Fuel Level Signal - Primary

D

LT GRN

497

Fuel Pump Relay Control - Secondary

E

BLK/WHT

451

Ground

F

PPL

30

Fuel Level Signal

Fuel Balance Pump Relay (Dual Tanks)


Object Number: 535912 Size: CH

Connector Part Information
    • 12129716
    • 4 Way F Metri-pack 280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

30

PNK

639

Ignition 1 Voltage

85

GRY

120

Fuel Pump Supply Voltage

86

LT GRN

497

Fuel Pump Relay Control - Secondary

87

LT GRN

1058

Fuel Balance Pump Supply Voltage

Fuel Heater


Object Number: 524568 Size: CH

Connector Part Information
    • 12020397
    • 3 Way F Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

BLK

550

Ground

B

--

--

Not Used

C

PNK

539

Ignition 1 Voltage

Fuel Solenoid Driver


Object Number: 697046 Size: CH

Connector Part Information
    • 12186568
    • 4 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

LT GRN

260

Fuel Injection Control

B

BLK

491

Low Reference

C

PNK

439

Ignition 1 Voltage

D

RED

313

Injection Pump Timing Signal

Fuel Temperature Sensor


Object Number: 697039 Size: CH

Connector Part Information
    • 12052848
    • 6 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

474

5 Volt Reference

B

BRN/WHT

633

CMP Sensor Signal

C

ORN

1799

High Resolution Signal

D

PNK/BLK

632

Low Reference

E

YEL

1578

Fuel Temperature Signal

F

PNK/BLK

632

Low Reference

Glow Plug Relay


Object Number: 62433 Size: CH

Connector Part Information
    • 12045636
    • 4 Way F Metri-pack 280 Series (MD GRY)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Ignition 1 Voltage

B

YEL

505

Glow Plug Relay Control

C

BLK

150

Ground

D

--

--

Not Used

Injection Timing Stepper Motor


Object Number: 38608 Size: CH

Connector Part Information
    • 12162189
    • 4 Way F Metri-pack 150.2 Series P2S (BLK)

Pin

Wire Color

Circuit No.

Function

A

TAN/BLK

1030

ITS Coil 1 Low

B

ORN/BLK

1032

ITS Coil 2 Low

C

YEL/BLK

1033

ITS Coil 2 High

D

RED/BLK

1031

ITS Coil 1 High

Intake Air Temperature (IAT) Sensor


Object Number: 646180 Size: CH

Connector Part Information
    • 12162198
    • 2 Way F Metri-pack 150.2 Series P2S (GRY)

Pin

Wire Color

Circuit No.

Function

A

TAN

472

IAT Sensor Signal

B

BLK

452

Low Reference

Turbocharger Boost Sensor


Object Number: 280779 Size: CH

Connector Part Information
    • 12103771
    • 3 Way M Weather-pack TWR Type (WHT)

Pin

Wire Color

Circuit No.

Function

A

BLK

452

Low Reference

B

LT GRN

432

MAP Sensor Signal

C

GRY

416

5 Volt Reference

Turbocharger Wastegate Solenoid


Object Number: 635009 Size: CH

Connector Part Information
    • 12052641
    • 2 Way F Metri-pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Ignition 1 Voltage

B

YEL

258

Wastegate Solenoid Control

Vehicle Speed Sensor (VSS) - M/T


Object Number: 38554 Size: CH

Connector Part Information
    • 12124819
    • 2 Way F Metri-pack 280 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS High Signal

B

LT GRN/BLK

822

VSS Low Signal

Vehicle Speed Sensor (VSS) - A/T


Object Number: 237066 Size: CH

Connector Part Information
    • 12162194
    • 2 Way F Metri-pack 150.2 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

PPL/WHT

821

VSS High Signal

B

LT GRN/BLK

822

VSS Low Signal

Vehicle Speed Sensor (VSS) Buffer


Object Number: 62467 Size: CH

Connector Part Information
    • 12066130
    • 9 Way F Micro-pack 100 Series (NAT)

Pin

Wire Color

Circuit No.

Function

7

LT GRN/BLK

822

VSS Low Signal

8

BLK/WHT

451

Ground

9

PNK

39

Ignition 1 Voltage

10

YEL/BLK

1827

Vehicle Speed Signal

11

--

--

Not Used

12

PPL/WHT

821

VSS High Signal

13

BRN

437

Vehicle Speed Signal

14

DK GRN/WHT

817

Vehicle Speed Signal

15

DK GRN

389

Vehicle Speed Signal

Water In Fuel Sensor


Object Number: 309547 Size: CH

Connector Part Information
    • 12015793
    • 3 Way F Weather-pack TWR Type (BLK)

Pin

Wire Color

Circuit No.

Function

A

PNK

539

Ignition 1 Voltage

B

YEL/BLK

508

Water In Fuel Indicator Control

C

BLK

150

Ground