GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Body and Accessories 🢒 Horns 🢒 Power and Grounding Component Views

Power and Grounding Component Views Power Distribution

Figure 1:

IP Harness to Dash Panel, Right Forward
Object Number: 230863 Size: LF
(1)Relay Center
(2)Vehicle Speed Sensor (VSS) Buffer
(3)Fuse Block 2
(4)Fuse Block 1
(5)IP Fuse Block/Mini-Relay Center
(6)Flasher/Relay Center, Position 3
(7)Flasher/Relay Center, Position 2, Exhaust Brake Relay
(8)Flasher/Relay Center
(9)Flasher/Relay Center, Position 1
Figure 2:

Batteries and Battery Cables, Left Front View
Object Number: 235956 Size: LF
(1)Negative Battery Cable to Battery Cable
(2)Negative Battery to Battery Cable
(3)Battery Cable Harness
(4)Left Battery (Triple Batteries)
(5)Center Battery (Triple Batteries)
(6)Right Battery (Triple Batteries)
(7)Positive Battery to Battery Cable
(8)Positive Battery to Battery Cable
Figure 3:

Negative Battery Cable Extension
Object Number: 204742 Size: SH
Figure 4:

Body Ground Strap to Frame Rail, Left Front View
Object Number: 230864 Size: LF
(1)Body Ground Strap
Figure 5:

Engine to Frame Ground Cable, Left Front View (LP4/L21)
Object Number: 235951 Size: LF
(1)Left Engine Ground Cable
Figure 6:

Engine Harness and Battery Cable to Starter (LP4/L21), Upper Right Front
Object Number: 220294 Size: MF
(1)Starter Solenoid
(2)Starter Motor
(3)Starter SW Terminal
(4)Starter BATT Terminal
(5)Starter Solenoid C1 (ring terminal)
(6)Starter Solenoid C4 (ring terminal)
(7)Starter Solenoid C2 (ring terminal)
(8)Fusible Link M
(9)Positive Battery Cable
Figure 7:

Generator to Engine Ground Strap Components, Upper Right Forward View (LG5)
Object Number: 216267 Size: LF
(1)Generator
(2)Generator Ground Strap
Figure 8:

Generator to Engine Ground Strap Wiring, Upper Right Side Forward View (LP4/L21)
Object Number: 216268 Size: LF
(1)Generator
(2)Generator Ground Strap
Figure 9:

Engine Harness to Generator Components, Upper Right Forward View
Object Number: 220302 Size: MF
(1)Generator B+ Terminal
(2)Generator
(3)Generator Connector
(4)Generator Ground Strap
Figure 10:

IP, Right Forward View
Object Number: 230753 Size: LF
(1)IP Fuse Block
Figure 11:

Steering Column, Left Forward View
Object Number: 227483 Size: LF
(1)Ignition Switch
(2)Headlamps Dimmer Switch
Figure 12:

IP Harness to Dash Panel (JE5 Shown, JE3 Similar), Center Front View
Object Number: 216172 Size: LF
(1)Hourmeter
(2)Automatic Transmission (A/T) Selector Connector (I/P Mounted)
(3)Turn Signal Switch
(4)Low Air Pressure Switch
(5)Ignition Switch C1 (5 cavities)
(6)Ignitions Switch C2 (4 cavities)
(7)Stoplamps Switch C1 (4 cavities)
Figure 13:

Engine Harness and Battery Cables to Starter (LG5), Upper Right Front (Components)
Object Number: 220297 Size: MF
(1)Starter Solenoid
(2)Starter BATT Terminal
(3)Starter SW Terminal
(4)Starter Solenoid C4 (ring terminal)
(5)Starter Solenoid C2 (ring terminal)
(6)Starter Motor
(7)Positive Battery Cable
Figure 14:

Left Side of IP (Components), Forward
Object Number: 220291 Size: MF
(1)IP Lamps Dimmer Switch
(2)Instrument Cluster
(3)Exhaust Brake Clutch Switch Jumper Plug
(4)Exhaust Brake Clutch Switch
(5)Upfitter Connector (23 cavities)
(6)Upfitter Connector Jumper (23 cavities)
(7)Upfitter IP (+) Junction Block
(8)Daytime Running Lamp (DRL) Control Module
(9)Driver Information Center
(10)Headlamps Switch
Figure 15:

Starter Motor Ground, Right View (KQR, LG5)
Object Number: 235957 Size: LF
(1)Starter Solenoid
(2)Negative Battery Cable
(3)Engine Harness
(4)Starter Motor
(5)Starter Motor Ground Cable
(6)Starter Motor Ground Cable
Figure 16:

Starter Ground, Right View (LG5)
Object Number: 235953 Size: LF
(1)Starter Solenoid
(2)Starter Motor
(3)Negative Battery Cable
(4)Engine Harness Ground
(5)Starter Motor Ground Cable
Figure 17:

Starter Ground Cable, Right View
Object Number: 206103 Size: SH
Figure 18:

Engine Harness to Dash Panel, Right Forward View (LP4/L21)
Object Number: 230774 Size: LF
(1)Engine Control Module (ECM)
(2)ECM C2 (24 cavities)
(3)ECM C1 (32 cavities)
(4)MaxiFuse® Block Power Feed
Figure 19:

Engine Harness to Dash Panel, Right Forward View
Object Number: 230768 Size: LF
(1)Powertrain Control Module (PCM) C3 (32 cavities)
(2)PCM C2 (24 cavities)
(3)PCM C1 (32 cavities)
(4)PCM
(5)Maxifuse® Block/Mini-Relay Center
(6)Flasher Relay Center
(7)Upfitter Provision for Windshield Washer Motor
Figure 20:

Forward Lamps, Left Front View
Object Number: 229995 Size: LF
(1)C102 (7 cavities)
Figure 21:

Engine Harness, Left Forward View (LG5)
Object Number: 229879 Size: LF
(1)C104 (2 cavities)
(2)C401 (2 cavities)
(3)C409 (8 cavities)
Figure 22:

Starter Harness Wiring, Right Front View (KQR, LG5)
Object Number: 232021 Size: LF
(1)G101, Starter End GND Terminal
(2)C106B (1 cavity)
(3)C106A (1 cavity)
Figure 23:

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 24:

Engine Harness, Upper Left View
Object Number: 232035 Size: LF
(1)C109 (8 cavities)
(2)C110 (10 cavities)
(3)G102
(4)C108 (15 cavities)
Figure 25:

Battery Cable, Lower Right Front View
Object Number: 232033 Size: LF
(1)C109 (8 cavities)
Figure 26:

Engine Harness to Master Cylinder, Left Front View
Object Number: 232024 Size: LF
(1)C119 (7 cavities)
Figure 27:

Diesel Engine Wiring Harness, Right Forward View
Object Number: 232038 Size: LF
(1)C126 (6 cavities)
Figure 28:

IP, Right Forward View
Object Number: 230750 Size: LF
(1)C200 (56 cavities)
(2)P100
Figure 29:

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 30:

IP Harness to Dash Panel, Right Forward View
Object Number: 232055 Size: LF
(1)C209 (10 cavities)
(2)P102
(3)C208 (8 cavities)
Figure 31:

Left Side of IP (Wiring), Forward View
Object Number: 231588 Size: MF
(1)C227 (2 cavities)
Figure 32:

Battery Cables, Upper Right Forward View (LP4/L21)
Object Number: 232042 Size: LF
(1)C401 (2 cavities)
Figure 33:

Engine Harness Upper Right Front View
Object Number: 232030 Size: LF
(1)C404 (5 cavities)
(2)C401 (2 cavities)
Figure 34:

Fuel Tank Harness to Fuel Level Controls, Left Front View
Object Number: 230789 Size: LF
(1)C404 (5 cavities)
Figure 35:

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 36:

Manual Transmission Harness, Left Forward View
Object Number: 229921 Size: LF
(1)C406 (3 cavities)
Figure 37:

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 38:

Engine Harness, Left Forward View (LG5)
Object Number: 229879 Size: LF
(1)C104 (2 cavities)
(2)C401 (2 cavities)
(3)C409 (8 cavities)
Figure 39:

Exhaust Brake Jumper Harness, Left View
Object Number: 232048 Size: LF
(1)C422 (2 cavities)
Figure 40:

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 41:

Starter Ground Cable, Right View
Object Number: 235926 Size: LF
(1)G103
(2)G100
Figure 42:

Starter Ground, Right View (LG5)
Object Number: 235955 Size: LF
(1)G101
(2)G100
Figure 43:

Body Ground Strap to Frame Rail, Left Front View
Object Number: 230866 Size: LF
(1)G107
(2)G105
Figure 44:

Generator to Engine Ground Strap Wiring, Upper Right Forward View (LG5)
Object Number: 231356 Size: LF
(1)G117
(2)G119
Figure 45:

Generator to Engine Ground Strap Wiring, Upper Right Forward View (LP4/L21)
Object Number: 231357 Size: LF
(1)G119
(2)G117
Figure 46:

Engine Harness to Generator Wiring, Upper Right Forward View (LG5)
Object Number: 231584 Size: MF
(1)G117
(2)G118
Figure 47:

Engine to Frame Ground Cable, Left Front View (LP4/L21)
Object Number: 235952 Size: LF
(1)G121
(2)G120
Figure 48:

Steering Column, Left Forward View
Object Number: 229974 Size: LF
(1)G208
Figure 49:

Battery Cable, Upper Right Forward View
Object Number: 232043 Size: LF
(1)G101
Figure 50:

Negative Battery Cable Extension
Object Number: 235938 Size: LF
(1)G413
(2)G414
Figure 51:

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