GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Front of Vehicle


Object Number: 305300  Size: LF
(1)C120
(2)Windshield Washer Solvent Level Switch Connector
(3)Windshield Washer Pump Motor Connector
(4)Underhood Accessory Wiring Junction Block C3
(5)RH Fog Lamp Connector
(6)G102 RH Forward amp Ground
(7)G101 LH Forward Lamp Ground
(8)LH Fog Lamp Connector
(9)C141
(10)Ambient Air Outside Temperature Sensor Connector
(11)C142
(12)Horn Connector
Figure 2:

Cooling Fans -- Front of Engine Compartment


Object Number: 305302  Size: LF
(1)C105
(2)RH Engine Coolant Fan Motor
(3)LH Engine Coolant Fan Motor
Figure 3:

Left Front of Vehicle


Object Number: 305303  Size: LF
(1)Headlamp-Left Connector
(2)Headlamp-Left Assembly
Figure 4:

RH Side of Engine Compartment


Object Number: 305304  Size: LF
(1)Battery
(2)Underhood Accessory Wiring Junction Block
(3)G100 Battery Ground
(4)Positive Battery Terminal
Figure 5:

Powertrain Control Module (PCM)-- LH Side of Engine Compartment


Object Number: 305307  Size: LF
(1)Powertrain Control Module (PCM) Connector,C2 (Blue)
(2)Powertrain Control Module (PCM) Connector, C1 (Clear)
(3)Powertrain Control Module (PCM)
(4)Air Cleaner/PCM Housing
(5)Engine Wiring Harness
(6)G101 LH Forward Lamp Ground
Figure 6:

Starter -- Lower Front of Engine Compartment


Object Number: 305308  Size: LF
(1)Positive Battery Cable
(2)G113/G117 Engine Grounds
(3)Starter Assembly
(4)Engine Oil Level Indicator Switch
(5)Knock Sensor (Bank 1)
Figure 7:

Top Right of Engine -- RPO L36,L67


Object Number: 305310  Size: LF
(1)Ignition Coils
(2)Ignition Control Module (ICM)
(3)G111
(4)Ignition Control Module (ICM) Wiring Harness
Figure 8:

Top Front of Engine


Object Number: 305311  Size: LF
(1)Manifold Absolute Pressure (MAP) Sensor
(2)C110
(3)C126
(4)Fuel Injector 5 Connector
(5)Engine Wiring Harness
(6)Evaporative Emissions (EVAP) Canister Purge Solenoid Valve
(7)Fuel Injector 3
(8)Fuel Injector 1
(9)Ignition Control Module (ICM) Wiring Harness
Figure 9:

Right Front Side of Engine (w/RPO L36,L67)


Object Number: 305312  Size: LF
(1)C110
(2)Ignition Control Module (ICM) Wiring Harness
(3)Ignition Control Module (ICM)
(4)Crankshaft Position (CKP) Sensor
Figure 10:

Lower Rear Side of Engine (w/RPO L36,L67)


Object Number: 305317  Size: LF
(1)Knock Sensor (KS) Bank 2
(2)Knock Sensor (KS) Bank 2 -- Wiring Harness
(3)C125
Figure 11:

Front Wheel Speed Sensor


Object Number: 305323  Size: LF
(1)C172 (RH Shown) or C171 (LF Similar)
(2)Front Wheel Speed Sensor
Figure 12:

Brake Modulator, Brake Motor, Brake Solenoid Valves, Cruise Control Module (L36)


Object Number: 305324  Size: LF
(1)Cruise Control Module
(2)Electronic Brake Traction Control Module (Brake Motor Connection)
(3)Brake Modulator
(4)LF Brake Solenoid Valve
(5)RF Brake Solenoid Valve
(6)Brake Fluid Level Indicator Sensor
Figure 13:

Windshield Wiper Motor -- Base of Windshield


Object Number: 305325  Size: LF
(1)Windshield Wiper Motor
(2)P103
(3)P101
Figure 14:

Radio -- Center of Instrument Panel


Object Number: 305327  Size: SH
(1)Radio
(2)Antenna Lead
(3)C290
Figure 15:

C201, C203, C205, and C215 -- Below Steering Column


Object Number: 305331  Size: LF
(1)C201
(2)Instrument Panel Wiring Harness
(3)C215
(4)C205
(5)C203
Figure 16:

Electronic Brake Control Relay, C201, G201, BCM, DRL Module, and EBTCM


Object Number: 305332  Size: LF
(1)Electronic Brake Control Relay
(2)C201
(3)G201
(4)G201
(5)Body Control Module (BCM)
(6)Daytime Running Lamps (DRL) Control Module
(7)Electronic Brake Traction Control Module (EBTCM) (RPO L36)
Figure 17:

G203 -- Behind LH Side of Instrument Panel


Object Number: 305333  Size: LF
(1)Instrument Panel Wiring Harness
(2)Brake Pedal Bracket
(3)G203 (Radio and Instrument Panel Electronic Grounds)
Figure 18:

HVAC -- Behind Center of Instrument Panel (CJ2 Shown, C67 Similar)


Object Number: 305344  Size: LF
(1)Right Electric Actuator (w/ RPO CJ2 Only)
(2)Vacuum/Electric Solenoid
(3)Engine Vacuum Hose
(4)Blower Motor
(5)Blower Motor Control Module (w/ RPO CJ2) or Blower Resistors (w/ RPO C67)
(6)P100
(7)Heater-A/C Module
(8)Left Electric Actuator
Figure 19:

Instrument Panel


Object Number: 305347  Size: LF
(1)C216 (Instrument Panel In-Line to Inflatable Restraint Instrument Panel Module)
(2)Inflatable Restraint Instrument Panel Module
(3)Instrument Panel Wiring Harness
Figure 20:

C200, C204, and Relays -- Behind RH Side of I/P


Object Number: 305348  Size: LF
(1)Instrument Panel Wiring Harness
(2)Cross Car Beam Underside
(3)G200 (SIR and Instrument Panel Grounds)
(4)C200
(5)C204
(6)Relays (Rear Window Defogger, Rear Compartment Lid Release, Fuel Filler Door Lock, and Door Lock Relay)
Figure 21:

Roof


Object Number: 305352  Size: LF
(1)C398 (Sun Roof In-Line to Body Wiring Harness)
(2)Body Wiring Harness
(3)Sun Roof Actuator and Sun Roof (Express Open) Module
(4)Sun Roof Module
(5)Sun Roof Switch Connector
Figure 22:

G301, C301, C303, C311, and C351 -- LH Side of Passenger Compartment


Object Number: 305354  Size: SF
(1)P371
(2)C351
(3)Park Brake Cable
(4)G301 (Body Ground)
(5)C301
(6)C303
(7)C311
(8)Body Wiring Harness
Figure 23:

C311 and C312 -- Floor Pan Under LF and RF Seats


Object Number: 332523  Size: LF
(1)C312 (w/ RPO AG2)
(2)C311
(3)Main Body Harness
Figure 24:

G302, C302, C304, and C352 RH Side of Passenger Compartment


Object Number: 305355  Size: SF
(1)C302
(2)C304
(3)C352
(4)P372
(5)G302 (Body Ground)
(6)Body Wiring Harness
Figure 25:

C405 -- RH Side of Passenger Compartment


Object Number: 305356  Size: SF
(1)C405
(2)P372
Figure 26:

Radio Antenna Module, C390, C395, and C399 -- RH C-Pillar


Object Number: 305357  Size: SF
(1)Radio Antenna Module
(2)Rear Defogger Grid Connection
(3)C390
(4)C399
(5)C395
Figure 27:

Left Side of Package Shelf


Object Number: 305358  Size: LF
(1)Body Wiring Harness
(2)Defogger Grid-Rear Window Ground Wire
(3)Package Shelf
(4)G401
Figure 28:

Below Rear of Vehicle


Object Number: 305365  Size: LF
(1)C405
(2)Fuel Tank Connectors C1 and C2
(3)Fuel Pump
(4)Fuel Level Sender
(5)Fuel Tank
Figure 29:

C402, C410 -- RH Side of Rear Compartment


Object Number: 305368  Size: LF
(1)Rear Compartment Courtesy Lamp Connector
(2)RH Radio Rear Speaker Connector
(3)CD Player Connector
(4)C402 (In-Line to RH Tail Lamp)
(5)Body Wiring Harness
(6)C410 (In-Line to Rear Compartment Lid Wiring Harness)
Figure 30:

C401, G401 -- LH Side of Rear Compartment


Object Number: 305369  Size: LF
(1)LH Radio Rear Speaker Connector
(2)G401 (Rear Body Ground)
(3)Low Frequency Audio Amplifier Connectors (w/ Bose® RPO U85)
(4)Body Wiring Harness
(5)Evaporative Emissions (EVAP) Canister Vent Solenoid Valve Connector
(6)P425
(7)Fuel Tank Filler Door Lock Actuator Connector
(8)C401(In-Line to LH Tail Lamp)
Figure 31:

EVAP Canister -- LR Wheel Opening


Object Number: 305367  Size: LF
(1)Evaporative Emissions (EVAP) Canister
(2)Evaporative Emissions (EVAP) Canister Vent Solenoid Valve
(3)P425
(4)Body Wiring Harness
Figure 32:

Rear Compartment Lid


Object Number: 305370  Size: LF
(1)C450 to Rear End Spoiler High Mount Stop Lamp, If Equipped
(2)Rear Compartment Lid Lock Actuator Connector
(3)License Plate Lamp Connectors
(4)Rear Compartment Lid Wiring Harness
(5)Rear Compartment Lid
(6)Rear Compartment Lid Ajar Switch
(7)C415
(8)Rear Body Wiring Harness
Figure 33:

C401, C402 LH Rear of Vehicle (RH Similar)


Object Number: 305372  Size: LF
(1)C401 LH/C402 RH
(2)Taillamp Assembly
(3)P401 LH/P402 RH
Figure 34:

C450 -- Rear of Vehicle


Object Number: 305373  Size: LF
(1)Rear End Spoiler With High-Mounted Stop Lamp (w/ RPO DD8 Only)
(2)P415
(3)C450
Figure 35:

C371, C372 -- Below Rear of Vehicle (RH Similar)


Object Number: 305374  Size: SF
(1)C371 LH/C372 RH
(2)P371 LH/P372 RH
Figure 36:

Right Rear Door


Object Number: 332521  Size: LF
(1)Window Switch-RR Connector
(2)Door Lock C1
(3)Door Lock C2
(4)Door Harness
(5)Window Motor-RR Connector
(6)C352
(7)P800