WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Radiator Core Support |
| 2 |
Headlamp - High Beam - Right |
| 3 |
Repeater Lamp - RF (Export) |
| 4 |
A/C High Pressure Recirculation Switch |
| 5 |
Ambient Air Temperature Sensor - Mirror |
| 6 |
Headlamp - High Beam - Left |
| 7 |
C125 |
| 8 |
Headlamp - Low Beam - Left |
| 9 |
C104 |
| 10 |
Repeater Lamp - LF (Export) |
| 11 |
Junction Block - Underhood C4 |
| 12 |
C103 |
| 13 |
Park/Turn Signal Lamp - LF |
| 14 |
Marker Lamp - LF |
| 15 |
S100 |
| 16 |
Windshield Washer Fluid Pump |
| 17 |
Washer Fluid Level Sensor |
| 18 |
Fog Lamp - LF |
| 19 |
G100 |
| 20 |
Daytime Running Lamp (DRL) - Left |
| 21 |
Inflatable Restraint Front End Sensor - Left |
| 22 |
Inflatable Restraint Front End Sensor - Right |
| 23 |
Fog Lamp - RF |
| 24 |
Ambient Air Temperature Sensor - HVAC (CJ2) |
| 25 |
Daytime Running Lamp (DRL) - Right |
| 26 |
S101 |
| 27 |
Park/Turn Signal Lamp - RF |
| 28 |
Marker Lamp - RF |
| 29 |
Headlamp - Low Beam - Right |
| 30 |
C127 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Brake/Clutch Harness |
| 2 |
C119 |
| 3 |
I/P Harness |
| 4 |
Engine Harness |
| 5 |
Fuse Block - Underhood |
| 6 |
Negative Battery Cable Harness |
| 7 |
C117 |
| 8 |
Accessory Jumper Harness |
| 9 |
C160 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Brake/Clutch Harness |
| 2 |
Fuse Block - Underhood |
| 3 |
Emergency Vehicle Roof Lamp Relay |
| 4 |
C160 |
| 5 |
C119 |
| 6 |
C161 |
| 7 |
Chassis Harness |
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| Callout |
Component Name |
| 1 |
3-Phase Cable |
| 2 |
Power Steering Pump Harness |
| 3 |
Auxiliary Battery Cable Jumpstart Lead |
| 4 |
Dash Panel |
| 5 |
Auxiliary Battery Cable Terminal to Fuse Block - Underhood |
| 6 |
Battery Cable Terminal to Fuse Block - Underhood |
| 7 |
Positive Battery Cable |
| 8 |
Negative Battery Terminal |
| 9 |
Power Steering Pump Connector C2 |
| 10 |
G100 |
| 11 |
G105 |
| 12 |
Starter/Generator Rotor |
| 13 |
Starter/Generator Stator |
| 14 |
Battery Cable Harness |
| 15 |
C121 |
| 16 |
C122 |
| 17 |
Starter/Generator Control Module |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
C102 |
| 2 |
Fuse Block - Underhood Support Mount |
| 3 |
C152 |
| 4 |
C100 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Fuse Block - Underhood |
| 2 |
C153 - Engine Harness to Transfer Case Harness |
| 3 |
C150 - Transfer Case Harness to Axle Jumper Harness |
| 4 |
Transfer Case Harness |
| 5 |
C151 - I/P Harness to Automatic Transfer Case Harness (w/NP8/NR4) or C104 - I/P Harness to Forward Lamp Harness (w/o NP8/NR4) |
| 6 |
C154 - I/P Harness to Automatic Transfer Case Harness (w/NP8/NR4) or C114 - Chassis Harness to I/P Harness (w/JL4/NYS) |
| 7 |
Power Take-Off (PTO) Relay |
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| Callout |
Component Name |
| 1 |
Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector |
| 2 |
Generator Connector |
| 3 |
Coolant Level Switch Connector |
| 4 |
Manifold Absolute Pressure (MAP) Sensor Connector |
| 5 |
A/C Low Pressure Switch Connector |
| 6 |
Auxiliary Battery Relay Connector (TP2) |
| 7 |
S102 |
| 8 |
S103 |
| 9 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector |
| 10 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector |
| 11 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector |
| 12 |
Vehicle Speed Sensor (VSS) |
| 13 |
Backup Lamp Switch (Manual Trans) |
| 14 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector |
| 15 |
Camshaft Position (CMP) Sensor Connector |
| 16 |
Engine Oil Pressure (EOP) Sensor Connector |
| 17 |
Engine Coolant Temperature (ECT) Sensor Connector |
| 18 |
Idle Air Control (IAC) Motor Connector |
| 19 |
S110 |
| 20 |
Throttle Position (TP) Sensor Connector |
| 21 |
C153 |
| 22 |
C100 |
| 23 |
Fuse Block - Underhood C2 |
| 24 |
C152 |
| 25 |
Powertrain Control Module (PCM) C2 |
| 26 |
Powertrain Control Module (PCM) C1 |
| 27 |
A/C Compressor Clutch Connector |
| 28 |
A/C Refrigerant Pressure Sensor Connector |
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| Callout |
Component Name |
| 1 |
Engine - 6.6L Diesel |
| 2 |
Engine Harness |
| 3 |
G102 |
| 4 |
Auxiliary Negative Battery Ground |
| 5 |
Starter Relay Terminal |
| 6 |
Starter Solenoid |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Generator Connector |
| 2 |
Evaporative Emission (EVAP) Canister Purge Solenoid |
| 3 |
S104 |
| 4 |
C148 |
| 5 |
Manifold Absolute Pressure (MAP) Sensor Connector |
| 6 |
Knock Sensor (KS) Connector |
| 7 |
Knock Sensor (KS) Connector |
| 8 |
G104 |
| 9 |
Camshaft Position (CMP) Sensor Connector |
| 10 |
Throttle Actuator Control (TAC) Connector |
| 11 |
C153 |
| 12 |
G102 |
| 13 |
C100 |
| 14 |
Fuse Block - Underhood C2 |
| 15 |
C152 |
| 16 |
Powertrain Control Module (PCM) C2 |
| 17 |
Powertrain Control Module (PCM) C1 |
| 18 |
S110 |
| 19 |
S103 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Manifold Absolute Pressure (MAP) Sensor Connector |
| 2 |
S102 |
| 3 |
Auxiliary Battery Relay Connector (TP2) |
| 4 |
Evaporative Emission (EVAP) Canister Purge Soleniod |
| 5 |
Throttle Actuator Control (TAC) Connector |
| 6 |
Coolant Level Switch Connector |
| 7 |
Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector |
| 8 |
A/C Refrigerant Pressure Sensor Connector |
| 9 |
A/C Compressor Clutch Connector |
| 10 |
A/C Low Pressure Switch Connector |
| 11 |
Engine Oil Level Switch Connector |
| 12 |
Camshaft Position (CMP) Sensor Connector |
| 13 |
Engine Oil Pressure (EOP) Sensor Connector |
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| Callout |
Component Name |
| 1 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector (Automatic) |
| 2 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector (Automatic) |
| 3 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Connector (Manual) |
| 4 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Connector (Manual) |
| 5 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector (Manual) |
| 6 |
Vehicle Speed Sensor (VSS) Connector |
| 7 |
Backup Lamp Switch Connector |
| 8 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector (Manual) |
| 9 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 Connector (Automatic) |
| 10 |
Park/Neutral Position Switch Connector |
| 11 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 Connector (Automatic) |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
A/C Compressor Clutch Connector |
| 2 |
A/C Refrigerant Pressure Sensor Connector |
| 3 |
Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector |
| 4 |
Generator - Left Connector |
| 5 |
Coolant Level Switch |
| 6 |
C108 |
| 7 |
A/C Low Pressure Switch Connector |
| 8 |
S118 |
| 9 |
C107 |
| 10 |
Throttle Actuator Control (TAC) Module Connector |
| 11 |
Backup Lamp Switch Connector |
| 12 |
Vehicle Speed Sensor (VSS) Connector |
| 13 |
S127 |
| 14 |
C100 |
| 15 |
Fuse Block - Underhood C2 |
| 16 |
G104 |
| 17 |
C152 |
| 18 |
Engine Control Module (ECM) C1 Connector |
| 19 |
Engine Control Module (ECM) C2 Connector |
| 20 |
Engine Control Module (ECM) C3 Connector |
| 21 |
S164 |
| 22 |
S102 |
| 23 |
S148 |
| 24 |
S147 |
| 25 |
S119 |
| 26 |
Generator - Right Connector |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
S127 |
| 2 |
Throttle Actuator Control (TAC) Module Connector |
| 3 |
C108 |
| 4 |
C107 |
| 5 |
C153 |
| 6 |
C100 |
| 7 |
Fuse Block - Underhood C2 |
| 8 |
C152 |
| 9 |
Glow Plug Controller Power |
| 10 |
Generator - Right Connector |
| 11 |
S141 |
| 12 |
A/C Refrigerant Pressure Sensor Connector |
| 13 |
Engine Control Module (ECM) C3 Connector |
| 14 |
Engine Control Module (ECM) C2 Connector |
| 15 |
Engine Control Module (ECM) C1 Connector |
| 16 |
A/C Compressor Clutch Connector |
| 17 |
Generator - Left Connector |
| 18 |
Intake Air Temperature (IAT)/Mass Air Flow (MAF) Sensor Connector |
| 19 |
G102 |
| 20 |
Coolant Level Switch Connector |
| 21 |
A/C Low Pressure Switch Connector |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Intake Air Temperature (IAT)/ Mass Air Flow (MAF) Sensor Connector |
| 2 |
A/C Compressor Clutch Connector |
| 3 |
Coolant Level Switch Connector |
| 4 |
Generator - Left Connector |
| 5 |
A/C Refrigerant Pressure Sensor Connector |
| 6 |
Generator - Right Connector |
| 7 |
C107 |
| 8 |
A/C Low Pressure Switch Connector |
| 9 |
C108 |
| 10 |
S102 |
| 11 |
PTO Relay |
| 12 |
Glow Plug Controller Power |
| 13 |
Throttle Actuator Control (TAC) Module Connector |
| 14 |
Automatic Transmission Input Shaft Speed (AT ISS) Sensor Connector |
| 15 |
Automatic Transmission Turbine Speed Sensor Connector |
| 16 |
C145 |
| 17 |
Automatic Transmission Output Speed Sensor Connector |
| 18 |
Park/Neutral Position (PNP) Switch Connector |
| 19 |
C100 |
| 20 |
Fuse Block - Underhood C2 |
| 21 |
C152 |
| 22 |
C106 |
| 23 |
S103 |
| 24 |
G104 |
| 25 |
Engine Control Module (ECM) C1 |
| 26 |
Engine Control Module (ECM) C2 |
| 27 |
Transmission Control Module (TCM) C1 |
| 28 |
Transmission Control Module (TCM) C2 |
| 29 |
S163 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
S163 (PTO) |
| 2 |
S132 |
| 3 |
S164 (PTO) |
| 4 |
S102 |
| 5 |
S151 |
| 6 |
S103 |
| 7 |
C155 |
| 8 |
Fuse Block - Underhood C2 |
| 9 |
PTO Relay Connector |
| 10 |
S104 |
| 11 |
Throttle Actuator Control (TAC) Module C1 |
| 12 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 |
| 13 |
Knock Sensor (KS) - Bank 1 |
| 14 |
C100 |
| 15 |
C152 |
| 16 |
C106 (PTO) |
| 17 |
S165 (M74) |
| 18 |
S110 |
| 19 |
G102 |
| 20 |
Powertrain Control Module (PCM) C2 |
| 21 |
Powertrain Control Module (PCM) C1 |
| 22 |
Transmission Control Module (TCM) C1 |
| 23 |
Transmission Control Module (TCM) C2 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Auxiliary Battery Relay Connector (TP2) |
| 2 |
A/C Low Pressure Switch Connector |
| 3 |
Manifold Absolute Pressure (MAP) Sensor |
| 4 |
Engine Coolant Temperature (ECT) Sensor |
| 5 |
C149 |
| 6 |
S157 |
| 7 |
Coolant Level Switch Connector |
| 8 |
S160 |
| 9 |
Throttle Actuator Control (TAC) Motor Connector C1 |
| 10 |
C153 |
| 11 |
A/C Compressor Clutch Connector |
| 12 |
A/C Refrigerant Pressure Sensor Connector |
| 13 |
Knock Sensor (KS) - Bank 2 |
| 14 |
Engine Oil Level Switch Connector |
| 15 |
Starter Solenoid Power |
| 16 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 |
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| Callout |
Component Name |
| 1 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 |
| 2 |
Automatic Transmission Input Shaft Speed (At ISS) Sensor |
| 3 |
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 |
| 4 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 |
| 5 |
Vehicle Speed Sensor (VSS) |
| 6 |
Park Neutral Position (PNP) Switch Connector |
| 7 |
C145 |
| 8 |
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 |
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| Callout |
Component Name |
| 1 |
C202 |
| 2 |
Stop Lamp Switch Connector |
| 3 |
C160 (5X7, 5Y0) |
| 4 |
C119 (9L4) |
| 5 |
C250 |
| 6 |
C216 |
| 7 |
S223 |
| 8 |
S220 |
| 9 |
Roof Beacon Switch Connector (5X7, 5Y0, 5G4, TRW) |
| 10 |
Dash Panel |
| 11 |
Fuse Block - Mobile Radio (9L4) |
| 12 |
S222 |
| 13 |
S221 |
| 14 |
Blunt Cut Wires (9L4) |
| 15 |
Relay Block - I/P C5 |
| 16 |
Relay Block - I/P C8 |
| 17 |
C210 |
| 18 |
Park Brake Switch Connector |
| 19 |
Clutch Pedal Position (CPP) Switch |
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| Callout |
Component Name |
| 1 |
C104 (YE9) |
| 2 |
C106 (PTO) |
| 3 |
Fuse Block Underhood - C1 |
| 4 |
C115 (NYS) |
| 5 |
C105 (LB7) |
| 6 |
S214 (NP8) |
| 7 |
S202 |
| 8 |
P110 |
| 9 |
S213 |
| 10 |
S205 |
| 11 |
C222 (Except HP2) |
| 12 |
C209 (Z55 or E52) |
| 13 |
C306 |
| 14 |
C249 |
| 15 |
S210 (UQ7 and Y91) |
| 16 |
C201 |
| 17 |
S218 |
| 18 |
C221 |
| 19 |
C206 (Y91 or HP2) |
| 20 |
S212 (NYS) |
| 21 |
P100 |
| 22 |
C154 (NP1 or NP8) |
| 23 |
C102 |
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| Callout |
Component Name |
| 1 |
Door Latch Assembly |
| 2 |
Door Frame |
| 3 |
Fuse Block - I/P C3 |
| 4 |
Power Window Motor Connector |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Door Frame |
| 2 |
Door Latch Assembly |
| 3 |
Power Window Motor Connector |
| 4 |
Junction Block - I/P C2 |
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| Callout |
Component Name |
| 1 |
C321 |
| 2 |
Seat Adjuster Switch - Driver |
| 3 |
Memory Seat Module - C4 |
| 4 |
Memory Seat Module - C3 |
| 5 |
Seat Bolster/Lumbar Switch - Driver |
| 6 |
Seat Recliner Motor - Driver |
| 7 |
C305 |
| 8 |
C323 |
| 9 |
C325 |
| 10 |
C322 |
| 11 |
Seat Rear Vertical Motor - Driver |
| 12 |
Seat Front Vertical Motor - Driver |
| 13 |
Memory Seat Module - C2 |
| 14 |
Memory Seat Module - C1 |
| 15 |
Seat Horizontal Motor - Driver |
| 16 |
C320 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Seat Bolster Motor - Driver |
| 2 |
Seat Lumbar Motor - Driver |
| 3 |
Heated Seat Element - Driver Cushion |
| 4 |
C324 |
| 5 |
Seat Belt Switch Connector |
| 6 |
Heated Seat Element - Driver Cushion Connector |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Seat Horizontal Motor - Front Passenger |
| 2 |
Seat Front Vertical Motor - Front Passenger |
| 3 |
Seat Rear Vertical Motor - Front Passenger |
| 4 |
C388 |
| 5 |
C326 |
| 6 |
C399 |
| 7 |
Seat Recliner Motor - Front Passenger |
| 8 |
Seat Adjuster Switch - Front Passenger |
| 9 |
Seat Adjuster Switch Connector |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Seat Bolster Motor - Front Passenger |
| 2 |
Seat Lumbar Motor - Front Passenger |
| 3 |
Heated Seat Element - Front Passenger Cushion Connector |
| 4 |
C329 |
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| Callout |
Component Name |
| 1 |
Auxiliary Power Outlet - Front Connector |
| 2 |
S333 |
| 3 |
S307 |
| 4 |
S303 |
| 5 |
Rear Seat Audio (RSA) Controller Connector |
| 6 |
Auxiliary Power Outlet - Console Connector |
| 7 |
Audio Amplifier Connector C2 |
| 8 |
Audio Amplifier Connector C1 |
| 9 |
Cigar Lighter |
| 10 |
C306 |
| 11 |
Speaker - Subwoofer Connector |
| 12 |
Speaker - Subwoofer (UQ7) |
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| Callout |
Component Name |
| 1 |
Suspension Damper Solenoid - RF (ZX3) |
| 2 |
Wheel Speed Sensor (WSS) - RF |
| 3 |
Suspension Damper Solenoid - RR (ZX3) |
| 4 |
License Lamp - Right |
| 5 |
G401 |
| 6 |
License Lamp - Left |
| 7 |
Junction Block - Rear Lamps C3 |
| 8 |
Suspension Damper Solenoid - LR (ZX3) |
| 9 |
Fuel Pump and Sender Assembly/Fuel Tank Pressure (FTP) Sensor Connectors |
| 10 |
Evaporative Emission (EVAP) Canister Vent Solenoid |
| 11 |
S312 |
| 12 |
Electronic Brake Control Module (EBCM) |
| 13 |
Stud #1 Trailer Connector |
| 14 |
C198 |
| 15 |
Fuse Block - Underhood C9 |
| 16 |
Fuse Block - Underhood C3 |
| 17 |
C102 |
| 18 |
Wheel Speed Sensor (WSS) - LF |
| 19 |
Suspension Damper Solenoid - LF (ZX3) |
| 20 |
C152 |
| 21 |
S140 |
| 22 |
Brake Pressure Differential Switch |
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| Callout |
Component Name |
| 1 |
S430 |
| 2 |
Chassis |
| 3 |
S330 |
| 4 |
Energy Storage Box (ESB) |
| 5 |
Battery Cable Harness (42V) |
| 6 |
P105 |
| 7 |
C140 |
| 8 |
Starter/Generator Control Module |
| 9 |
C122 |
| 10 |
C121 |
| 11 |
S121 |
| 12 |
Accessory Power Receptacle Harness |
| 13 |
S120 |
| 14 |
S326 |
| 15 |
S332 |
| 16 |
S331 |
| 17 |
C341 |
| 18 |
Accessory Power Receptacle Connector |
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| Callout |
Component Name |
| 1 |
C355 |
| 2 |
S345 |
| 3 |
Courtesy/Reading Lamp - Rear Connector |
| 4 |
Headliner |
| 5 |
Center High Mounted Stop Lamp (CHMSL) Connector |
| 6 |
Driver Side B - Pillar Molding |
| 7 |
S321 |
| 8 |
Relay Block - I/P Connectors - C3 and C4 |
| 9 |
Park Brake Switch Connector |
| 10 |
Stop Lamp Switch Connector |
| 11 |
C205 (HP2) |
| 12 |
C214 |
| 13 |
Inside Rearview Mirror Connector |
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| Callout |
Component Name |
| 1 |
Fuse Block - I/P C4 |
| 2 |
G304 |
| 3 |
G330 (AL0) |
| 4 |
G399 (AG2) |
| 5 |
C396 |
| 6 |
G306 |
| 7 |
Headliner |
| 8 |
Rear Window Defogger Grid Connector (Crew Cab) |
| 9 |
Floor Panel |
| 10 |
G305 |
| 11 |
C310 |
| 12 |
C305 |
| 13 |
Inflatable Restraint Sensing and Diagnostic Module (SDM) Connector |
| 14 |
C221 |
| 15 |
C223 |
| 16 |
Relay Block - I/P C10 |
| 17 |
C222 |
| 18 |
Body Control Module (BCM) C6 |
Courtesy of GENERAL MOTORS CORP.
| Callout |
Component Name |
| 1 |
Relay Block - I/P |
| 2 |
Relay Block - I/P - C4 |
| 3 |
C210 - Roof Beacon Relay Inline |