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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1483 (WIRING SYSTEMS - SPECIFICATIONS, COMPONENT VIEWS AND CONNECTOR END VIEWS)COMPONENT LOCATORPOWER AND GROUNDING COMPONENT VIEWS
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Power and Grounding Component Views

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Power and Grounding Component Views
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Engine Compartment Under The Battery Component View
GM531303Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Battery
2 Battery Cables
3 G104
4 Engine Coolant Reservoir
5 Fuse Block-Underhood
Fig 2: View of Vehicle Without Body Panels Component View
GM531308Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G302
2 G402
3 G401
4 G205 and G301
5 G201
6 Grounding Point for Engine Ground Strap
7 G101
8 G102
9 G104 and G108
Fig 3: Behind The Lf Wheel Component View
GM531324Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Grounding Strap
2 Frame Rail-LH
3 Engine Grounding Strap Location
Fig 4: Bottom of the A-Pillar Component View - LF
GM183977Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 SP203
2 SP201
3 G201
4 C203
5 C201
Fig 5: Bottom of the A-Pillar Component View - RF
GM532432Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C202
2 C200
3 G202
4 SP202
Fig 6: Instrument Panel Component View
GM698554Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Sunload Sensor
2 HVAC Module Assembly
3 Air Temperature Actuator (C60)
4 Vacuum Control Assembly (CJ2)
5 Blower Motor
6 Blower Motor Control Processor
7 Fuse Block-IP
8 Body Control Module (BCM)
9 Ignition Switch
10 Air Temperature Sensor - Inside
11 Telescoping Actuator Switch
12 Data Link Connector (DLC)
13 Multifunction Turn Signal Lever
14 Ambient Light Sensor
15 Windshield Wiper/Washer Switch
Fig 7: Cockpit Component View
GM698492Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Outside Rearview Mirror-Driver
2 Fog Lamp/Rear Compartment Lid Release Switch (Domestic), Fog Lamp Switch (Export)
3 Dimmer Switch
4 Dimmer/Head Up Display (HUD) Switch
5 Instrument Panel Cluster (IPC)
6 Vanity Mirror Lamp-Left
7 Driver Information Center (DIC) Switch-Right
8 Hazard Switch
9 Radio
10 HVAC Control Module
11 Vanity Mirror Lamp-Right
12 Door Switch-Passenger
13 Outside Rearview Mirror-Passenger
14 Footwell Courtesy Lamp-Right
15 Fuel Door Lock Release Switch (Domestic), Rear Compartment Lid/Fuel Door Lock Release Switch (Export)
16 Traction/Suspension Control Switch
17 Auxiliary Power Outlet Connector
18 Cigar Lighter
19 Horn Switch
20 Seat Control Module (SCM)-Driver (W/Memory Seats), Seat Relay Center-Driver (W/O Memory Seats)
21 Seat Adjuster Switch-Driver
22 Footwell Courtesy Lamp-Left
23 Door Switch-Driver
Fig 8: Steering Column Component View
GM726262Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Telescoping Sensor
2 Steering Column Lock
3 C219
4 C207
5 C211
6 C217
7 C209
8 Steering Wheel Position Sensor
9 Telescoping Drive Motor
10 C210
Fig 9: Under RH Side Of Dash Component View
GM698593Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Theft Deterrent Relay
2 Fuse Block-IP
3 Blower Motor Relay
4 Star Connector #2
5 Body Control Module (BCM) C3
6 Body Control Module (BCM) C1
7 Star Connector #1
8 Body Control Module (BCM) C2
9 Steering Column Lock Relay
Fig 10: Under Side Of The Dash Component View - Left
GM698493Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Stop Lamp Switch C1
2 Stop Lamp Switch C3
3 C213
4 Bose Signal Processor
5 Accelerator Pedal Position (APP) Sensor
6 Accelerator Pedal
7 Brake Pedal
8 Steering Wheel Position Sensor
9 Clutch Pedal
10 Clutch Pedal Start Switch
11 Clutch Pedal Position Switch
12 Stop Lamp Switch
13 Stop Lamp Switch Connector C2
Fig 11: Speakers And Antennas Component View
GM698571Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Front Window Antenna
2 Speaker-RR
3 Antenna Buffer
4 Rear Window Antenna
5 Speaker-LR
6 G205
7 Radio Antenna Module (Coupe)
8 C301
9 Speaker-LF Door
10 Speaker-RF Door
Fig 12: Body Rear End Harness Routing Component View
GM880389Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C400
2 S420 - Europe
3 S496 - Japan
4 S490 - Japan/Europe
5 S485 - Japan
6 S482
7 S484 - Domestic
8 S480 - Japan/Europe
9 S492 - Domestic
10 S494 - Japan/Europe
11 License Lamp Inline Fuse-RH (Export)
12 S498
13 S483 - Japan/Europe
14 S481 - Japan/Domestic
15 License Lamp Inline Fuse-LH (Export)
16 Sp400, Sp402 - Export
Fig 13: Engine Component View
GM695524Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 6
2 Fuel Injector 8
3 Fuel Injector 3
4 Fuel Injector 5
5 Fuel Injector 7
6 Ignition Coil/Module 7
7 Ignition Coil/Module 5
8 C109
9 Ignition Coil/Module 3
10 Ignition Coil/Module 1
11 Engine Oil Temperature (EOT) Sensor
12 Engine Coolant Temperature (ECT) Sensor
13 Evaporative Emission (EVAP) Canister Purge Solenoid
14 Fuel Injector 1
15 Throttle Actuator Control (TAC) Motor
16 Throttle Position (TP) Sensor
17 Fuel Injector 2
18 Ignition Coil/Module 2
19 Ignition Coil/Module 4
20 Fuel Injector 4
21 C110
22 Ignition Coil/Module 6
23 Ignition Coil/Module 8
Fig 14: Forward Lamp Jumper Harness Component View
GM881480Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 C100
2 Sp102
Fig 15: Lower Side Of Engine Component View - Left
GM697239Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G105
2 Engine Oil Temperature (EOT) Sensor
3 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
Fig 16: Rear Of Engine Component View
GM696026Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Oil Pressure (EOP) Sensor
2 Manifold Absolute Pressure (MAP) Sensor
3 Camshaft Position (CMP) Sensor
4 G107
5 C112
Fig 17: Front Of Engine Compartment Component View
GM698487Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 A/C Refrigerant Pressure Sensor
2 Secondary Air Injection (AIR) Pump
3 SP100
4 G102
5 Headlamp Door Assembly-Right Connector
Fig 18: Left Front Of Engine Compartment Component View
GM698587Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Electronic Brake Control Module (EBCM)
2 Brake Pressure Modulator Valve (BPMV)
3 SP101
4 G101
Fig 19: Front Body Harness Component View
GM723766Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 S304
2 Inline to Defogger Grid (Power)
3 Rear Compartment Courtesy Lamp - Right
4 Rear Compartment Lid Latch - Right C2
5 Remote Playback Device - CD Changer
6 Rear Compartment Courtesy Lamp - Left
7 Rear Compartment Lid Latch-Left C2
8 Rear Compartment Lid Latch-Left C1
9 Fuel Door Lock Actuator
10 Rear Compartment Lid Latch - Right C1
11 Remote Control Door Lock Receiver (RCDLR)
12 Inline to Defogger Grid (Ground)
13 Speaker - LR
14 G301
15 C302
16 Fuse Block - I/P C3
17 C204
18 S314 and S312
19 G302
20 SP302
21 S302
22 S303
23 Speaker - RR
RENDER: 1.0x

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.