GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Chevy K Silverado - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Harness Routing Views
Figure 1:

LH Front of Vehicle
Object Number: 310802 Size: MF
(1)Upper Radiator Support (Tie Bar)
(2)LH Headlamp Assembly
(3)LH High Beam Lamp Connector
(4)LH Daytime Running Lamp Bulb
(5)LH Daytime Running Lamp Socket
(6)Windshield Washer Reservoir
(7)LH Front Park/Turn Lamp Socket
(8)LH Front Marker Socket
(9)LH Front Marker Bulb
(10)LH Front Park/Turn Lamp Bulb
(11)Snowplow (Option) Connector C125
(12)LH Low Beam Connector
(13)LH Front Marker Lamp Lens (RH similar)
Figure 2:

Instrument Cluster
Object Number: 310124 Size: MF
(1)Instrument Panel Cluster (IPC)
(2)Inline Connector C202 M
(3)Inline Connector C202 F
(4)Instrument Cluster Electrical Connector
(5)Instrument Panel Carrier
(6)Instrument Panel
Figure 3:

Upper Left of the I/P Components
Object Number: 310066 Size: MF
(1)Splice Pack 203 (SP203)
(2)Ground 203 (G203)
(3)Dash
(4) A-Pillar
Figure 4:

Lower Steering Column Connectors
Object Number: 310109 Size: MF
(1)Inline Connectors (C201A, C201B and C201C)
(2)Inline Connector C201
(3)Inflatable Restraint Harness
(4)Inflatable Restraint Electrical Connector
(5)Body Control Module (BCM) Bracket
(6)Body Control Module (BCM) Harness
(7)A/T Shift Lock Control Solenoid Connector
(8)A/T Shift Lock Control Solenoid Electrical Connector
(9)Lower Steering Column Shaft
(10)Inflatable Restraint Steering Wheel Module Connector with Tether
(11)Instrument Panel Bracket
Figure 5:

HVAC Module Assembly (Connections)
Object Number: 310004 Size: MF
(1)Recirculation Door Motor Electrical Connector
(2)Instrument Panel
(3)Electrical Harness Connector
(4)Ground 200 (G200)
(5)Blower Motor Resistor/Relay Assembly
(6)Blower Motor Resistor/Relay Electrical Connector
(7)Harness Inline Connector (C296)
(8)Temperature Door Motor Electrical Connector
(9)Temperature Door Motor
(10)Mode Door Motor
Figure 6:

Left Side Frame Rail -- Brake Components
Object Number: 309937 Size: MF
(1)Ground 302 (G302)
(2)LH Body Mount
(3)Ground Screw
(4)Electronic Brake Control Module (EBCM)
(5)Fuel Tank
Figure 7:

Left Kick Panel (1 of 2)
Object Number: 310055 Size: MF
(1)C200 (IP Harness Side)
(2)C204
(3)A-Pillar
(4)C200 (Door Harness Side)
Figure 8:

Lower LR of the Engine Components (4.8L/5.3L/6.0L)
Object Number: 310261 Size: LF
(1)Ground 103 (G103)
(1)Ground 103 (G103)
(2)Engine Harness- H02S
(3)HO2 Sensor connector- Bank 1, Sensor 1
(4)Fuel Line Bracket
(5)Ground 104 (G104)
(5)Ground 104 (G104)
(6)Oil Pressure Sensor Connector
(6)Oil Pressure Sensor
(7)Engine Ground Strap (G107)
(8)TP 1 Battery Cable (G106)
Figure 9:

LH Rear View of Engine-4.3L
Object Number: 310499 Size: MF
(1)Oil Pressure Sensor Connector
(2)Oil Pressure Sensor
(3)Ground 104 (G104)
(4)Engine Ground Strap (G107)
(5)Engine 4.3L
(6)Knock Sensor
(7)Knock Sensor Connector
(8)Distributor Connector
(9)Distributor
Figure 10:

Right Side of the Engine Components (4.3L)
Object Number: 310504 Size: LF
(1)Coil - Ignition
(2)Generator
(3)Ignition Coil Driver
(4)Generator Connector
(5)RH Cylinder Head
(6)Ground 103 (G103)
(7)Map Sensor Connector
(8)Map Sensor
Figure 11:

LH Rear of Passenger Compartment
Object Number: 309982 Size: MF
(1)LH Side Inner Body Panel
(2)Panel Access Hole
(3)LH Rear Speaker Connector (Harness Side)
(4)LH Rear Speaker Connector (Speaker Side)
(5)Body Wiring Harness
(6)Body Wiring Harness
(7)Rear Glass (Deffoger Grid Not Shown)
(8)Rear Defogger Connector (Harness Side)
(9)Rear Defogger Connector (Window Side)
Figure 12:

Underhood Bussed Electrical Center (UBEC)
Object Number: 310806 Size: MF
(1)Underhood Bussed Electrical Center Bracket
(2)Inflatable Restraint Harness
(3)Radiator Support
(4)Inflatable Restraint Electrical Connector (IP) (C101)
(5)Inflatable Restraint Electrical Connector (Sensor) (C101)
(6)LH Battery Tray
(7)Underhood Bussed Electrical Center (UBEC) Bracket
(8)Underhood Bussed Electrical Center (UBEC)
Figure 13:

Inline Connectors Under the UBEC
Object Number: 413351 Size: MF
(1)Inline Connector 102 (C102)
(2)Underhood Bussed Electrical Center (UBEC)
(3)Inline Connector 152 (C152)
(4)Inline Connector 100 (C100)