GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2001 🢒 Isuzu T-Series (Truck Line C) 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Harness Routing Views
Figure 1:

Negative Battery Cable
Object Number: 204733 Size: SH
Figure 2:

Positive Battery Cable
Object Number: 215049 Size: SH
Figure 3:

Low Coolant Switch
Object Number: 215024 Size: SH
Figure 4:

Turn Signal Harness, Left Front View
Object Number: 628188 Size: LF
(1)C107 (4 Cavities)
(2)Front Chassis Harness
(3)C105 (5 Cavities)
(4)Turn Signal Harness
(5)High A Note - Horn
(6)Park and Turn Signal Lamp - LF
(7)Park and Turn Signal Lamp Connector
Figure 5:

Turn Signal Harness, Right Side
Object Number: 635532 Size: LF
(1)Right Front Park and Turn Signal Lamp
(2)A/C Pressure Cut Off Switch
(3)A/C Condenser
Figure 6:

Front Chassis Harness (JE3
Object Number: 635543 Size: LF
(1)C105
(2)G105
(3)G105
(4)C107
(5)Condenser Fan Connector
Figure 7:

Front Chassis Harness (JE5
Object Number: 635546 Size: LF
(1)C105
(2)G105
(3)G105
(4)C107
(5)Condenser Fan Connector
Figure 8:

Front Chassis Harness to Brake Components (JE3)
Object Number: 231487 Size: LF
(1)Brake Fluid Flow Switch
(2)Electronic Brake Control Module (EBCM) (JE3) Connecor C2 (2 cavities)
(3)Electronic Brake Control Module (EBCM) (JE3) Connector C1 (24 cavities)
(4)Electronic Brake Control Module (EBCM) (JE3)
Figure 9:

Front Chassis Harness to Brake Components
Object Number: 231480 Size: LF
(1)Power Brake Booster Pump (JE3)
(2)Power Brake Booster Pump Motor (JE3)
(3)Brake Fluid Level Switch (JE3)
Figure 10:

Front Chassis Harness to Brake Components
Object Number: 231739 Size: LF
(1)Brake Pressure Modulator Valve (BPMV), Right Side Front
(2)BPMV, Left Side Front
Figure 11:

Front Chassis Harness, Center (LG4
Object Number: 635548 Size: LF
(1)C116 (8 Cavities)
(2)C118 (2 Cavities)
(3)Left Frame Rail
Figure 12:

Cover to Cab Interface Removal
Object Number: 216373 Size: LF
Figure 13:

Front Chassis Harness to Cab
Object Number: 628181 Size: LF
(1)C204 (3 Cavities)
(2)C206 (2 Cavities)
(3)C202 (56 Cavities)
(4)Cab Interface Connector Housing
(5)C205 (1 Cavity) (LG4 Only)
(6)C207 (1 Cavity) (LG4 Only)
(7)P100
(8)C200 (56 Cavities)
(9)Front Chassis Harness
(10)P101
Figure 14:

Front Chassis to Harness Rear Support
Object Number: 635553 Size: LF
(1)Fuel Pump
(2)Rear Support
Figure 15:

Front Chassis Harness to Left Rear of Frame (JE3
Object Number: 628256 Size: LF
(1)Front Chassis Harness
(2)C413 (4 Cavities)
(3)Electronic Brake Control Harness (JE3)
Figure 16:

Front Chassis Harness to Electric/Hydraulic Park Brake Components
Object Number: 231707 Size: LF
(1)Park Brake Pump Motor Connector
(2)Park Brake Pressure Solenoid Valve
(3)Park Brake Pressure Sensor
(4)Park Brake Linkage Travel Switch Connector
(5)Electric/Hydraulic Park Brake Actuator
Figure 17:

Front Chassis Harness to Exhaust Brake
Object Number: 635535 Size: LF
(1)Engine Exhaust Brake Solenoid Valve
(2)Front Chassis Harness Connector
(3)Left Frame Rail at #2 Crossmember
Figure 18:

Low Air Pressure Switch
Object Number: 402098 Size: LF
(1)Low Air Pressure Switch (JE4)
Figure 19:

Manual Transmission Harness (5 or 6-Speed), Upper Left Rear View
Object Number: 628296 Size: LF
(1)Front Chassis Harness
(2)Backup Lamps Switch
(3)Vehicle Speed Sensor (VSS) (JE5)
(4)Vehicle Speed Sensor (VSS) (JE3)
(5)Manual Transmission Case
(6)Manual Transmission Harness
(7)C409
Figure 20:

Manual Transmission Harness (5 or 6-Speed), Upper Left Rear View
Object Number: 628296 Size: LF
(1)Front Chassis Harness
(2)Backup Lamps Switch
(3)Vehicle Speed Sensor (VSS) (JE5)
(4)Vehicle Speed Sensor (VSS) (JE3)
(5)Manual Transmission Case
(6)Manual Transmission Harness
(7)C409
Figure 21:

Manual Transmission Harness (9 or 10-Speed) , Upper Left Rear View
Object Number: 231666 Size: LF
(1)Backup Lamps Switch
(2)Vehicle Speed Sensor (VSS)
Figure 22:

Fuel Tank Harness, Left Side
Object Number: 231729 Size: MF
(1)Fuel Sender
(2)Fuel Tank
Figure 23:

Fuel Tank Harness to Fuel Level Controls, Left Side Front View
Object Number: 628251 Size: LF
(1)Fuel Sender and Balance Pump Control Module
(2)Fuel Sender and Balance Pump Control Module Connector
(3)Fuel Transfer Pump Relay
(4)Fuel Tank Harness to Left Side Tank
(5)Back of Cab Crossmember
Figure 24:

Fuel Tank Harness, Right Side
Object Number: 628248 Size: LF
(1)Fuel Sending Unit Connector
(2)Fuel Tank Sender (NL5)
(3)Fuel Transfer Pump Connector
(4)Fuel Transfer Pump
(5)Back of Cab Crossmember
(6)Fuel Tank Harness to Left Side Fuel Tank
(7)C411
(8)Rear Chassis Harness
Figure 25:

Electronic Brake Controls Harness and Components , LH View
Object Number: 231756 Size: LF
(1)RH Rear Wheel Speed Sensor (WSS) (JE4)
(2)RH Rear Gender Adapter Connector (4 male-to-male cavities) (JE4)
(3)RH Rear Brake Pressure Modulator Valve (BPMV) (JE4)
(4)LH Rear BPMV (JE4)
(5)LH Rear WSS (JE4)
(6)LH Rear Gender Adapter Connector (4 male-to-male cavities) (JE4)
Figure 26:

Electric Brake Control Harness, Rear (ABS-Air)
Object Number: 216501 Size: LF
Figure 27:

Trailer Harness, Front
Object Number: 635555 Size: LF
(1)Right Frame Rail
(2)Battery Ground Block
(3)Low Air Pressure Switch (JE4)
(4)C403
(5)C405
Figure 28:

Trailer Front Harness to Cab Bridge, Left Forward View
Object Number: 231704 Size: LF
(1)Trailer Receptacle
Figure 29:

Rear Chassis Harness and Tail Lamps, Upper Left Rear View (Typical)
Object Number: 231737 Size: LF
(1)Right Tail, Stop and Turn Signal Lamp with Backup Lamp
(2)Left Tail, Stop and Turn Signal Lamp with Backup Lamp