GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Harness Routing Views
Figure 1:

Engine and Forward Lamps Harness, Left Front View
Object Number: 229995 Size: LF
(1)C102 (7 cavities)
Figure 2:

Engine Harness, Left Forward View (LG5)
Object Number: 229879 Size: LF
(1)C104 (2 cavities)
(2)C401 (2 cavities)
(3)C409 (8 cavities)
Figure 3:

HRV Engine Harness and Battery Cables to Starter Solenoid, Upper Right Front View (LG5/KQR)
Object Number: 767632 Size: LF
(1)Starter
(2)Starter Temperature Switch
(3)KQR Harness
(4)Engine Harness
(5)C106B
(6)C106A
Figure 4:

Engine Harness and Battery Cables to Starter Solenoid, Upper Right Front View (LG5)
Object Number: 231594 Size: MF
(1)Negative Battery Cable
(2)C106B (1 cavity)
(3)C106A (1 cavity)
(4)C406 (2 cavities)
(5)C404 (5 cavities)
(6)G101, Starter GND Terminal
Figure 5:

ABS Harness to Power Brake (P/B) Booster Pump Motor Harness, Left Front View (JE3)
Object Number: 232024 Size: LF
(1)C119 (7 cavities)
Figure 6:

IP, Right Forward View
Object Number: 230750 Size: LF
(1)C200 (56 cavities)
(2)P100
Figure 7:

IP Harness to Dash Panel, Left Front View
Object Number: 233462 Size: LF
(1)C113 (2 cavities)
(2)C107 (7 cavities)
(3)C104 (3 cavities)
(4)C105 (8 cavities)
(5)C123 (3 cavities)
Figure 8:

IP Harness to Dash Panel, Right Forward View
Object Number: 232055 Size: LF
(1)C209 (10 cavities)
(2)P102
(3)C208 (8 cavities)
Figure 9:

Left Side of IP (Wiring), Forward View
Object Number: 231588 Size: MF
(1)C227 (2 cavities)
Figure 10:

Battery Cables, Upper Right Forward View (LP4/L21)
Object Number: 232042 Size: LF
(1)C401 (2 cavities)
Figure 11:

Fuel Tank Harness to Fuel Level Controls, Left Front View
Object Number: 230789 Size: LF
(1)C404 (5 cavities)
Figure 12:

Engine Harness and Battery Cables to Starter, Upper Right Front View (Wiring) (LG5)
Object Number: 231594 Size: MF
(1)G101
(2)C106B (1 cavity)
(3)C106A (1 cavity)
(4)C406 (2 cavities)
(5)C404 (5 cavities)
(6)G101, Starter GND Terminal
Figure 13:

Manual Transmission Harness, Left Forward View
Object Number: 229921 Size: LF
(1)C406 (3 cavities)
Figure 14:

Engine Harness Wiring, Upper Left Rear View (LP4/L21)
Object Number: 231348 Size: LF
(1)C401 (2 cavities)
(2)C401 (2 cavities)
(3)C409 (8 cavities)
(4)G102
(5)G401
Figure 15:

Engine Harness, Left Forward View (LG5)
Object Number: 229879 Size: LF
(1)C104 (2 cavities)
(2)C401 (2 cavities)
(3)C409 (8 cavities)
Figure 16:

Engine Harness to Engine Brake Harness, Left Rear View (LG5/K40)
Object Number: 232048 Size: LF
(1)C422 (2 cavities)
Figure 17:

Starter Motor Ground, Right View (KQR, LG5)
Object Number: 235962 Size: LF
(1)G103, Starter Side GND Terminal
(2)G101, Starter Side End GND Terminal
(3)G100
Figure 18:

Starter Ground, Right View (LG5)
Object Number: 235955 Size: LF
(1)G101
(2)G100
Figure 19:

Body Ground Strap to Frame Rail, Left Front View
Object Number: 230866 Size: LF
(1)G107
(2)G105
Figure 20:

Generator to Engine Ground Strap Wiring, Upper Right Forward View (LG5)
Object Number: 231356 Size: LF
(1)G117
(2)G119
Figure 21:

Generator to Engine Ground Strap Wiring, Upper Right Forward View (LP4/L21)
Object Number: 231357 Size: LF
(1)G119
(2)G117
Figure 22:

Engine Harness to Generator Wiring, Upper Right Forward View (LG5)
Object Number: 231584 Size: MF
(1)G117
(2)G118
Figure 23:

Engine to Frame Ground Cable, Left Front View (LP4/L21)
Object Number: 235952 Size: LF
(1)G121
(2)G120
Figure 24:

Steering Column, Left Forward View
Object Number: 229974 Size: LF
(1)G208
Figure 25:

Battery Cable, Upper Right Forward View
Object Number: 232043 Size: LF
(1)G101
Figure 26:

Negative Battery Cable Extension
Object Number: 235938 Size: LF
(1)G413
(2)G414
Figure 27:

Engine Harness to Dash Panel, Right Forward View
Object Number: 230771 Size: LF
(1)C200 (56 cavities)
(2)C208 (8 cavities)
(3)C209 (10 cavities)
(4)P102
(5)P100