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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 8.1L (Introduction) >> Component Locator >> Engine Controls Component Views
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Engine Controls Component Views

Fig 1: Powertrain Control Module (PCM) Component View
GM750139Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Powertrain Control Module (PCM)
2 PCM Connector C-1 and C-2
Fig 2: Evaporative Emissions (EVAP) Canister Vent Solenoid Component View
GM750140Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emissions (EVAP) Canister Vent Solenoid Connector
2 Evaporative Emissions (EVAP) Canister Vent Solenoid
Fig 3: Evaporative Emission (EVAP) Canister Purge Solenoid Component View
GM750142Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emission (EVAP) Canister Purge Solenoid
Fig 4: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2 Component View
GM750144Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Fig 5: Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1 Component View
GM750146Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
Fig 6: Park/Neutral Position (PNP) Switch Component View
GM750148Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1
2 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1
3 Vehicle Speed Sensor (VSS)
4 Park/Neutral Position (PNP) Switch Connectors C1 and C2
5 Park/Neutral Position (PNP) Switch
6 Heated Oxygen Sensor (HO2S) Bank 2 Sensor 2
Fig 7: Fuel Pump and Sender Assembly - Primary Component View
GM750151Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Pump and Sender Assembly Connector
2 Fuel Pump and Sender Assembly - Primary
Fig 8: Crankshaft Position (CKP) Sensor Component View
GM750152Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Exhaust Gas Recirculation (EGR) Connector
2 Exhaust Gas Recirculation (EGR) Valve
3 Crankshaft Position (CKP) Sensor Connector
4 Crankshaft Position (CKP) Sensor
5 Engine Oil Pressure (EOP) Sensor
6 Engine Oil Pressure (EOP) Sensor Connector
Fig 9: Fuel Pump and Sender Assembly-Secondary Component View - w/Dual Tanks
GM750176Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Pump and Sender Assembly-Secondary
2 Fuel Pump and Sender Assembly Connector
Fig 10: Fuel Pump Relay-Secondary Component View - w/Dual Tanks
GM750178Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Pump Relay-Secondary
Fig 11: Throttle Actuator Control (TAC) Module Component View
GM750162Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Throttle Actuator Control (TAC) Module
2 Throttle Actuator Control (TAC) Connector
3 Fuse Block-Underhood
Fig 12: Right Front Of Engine Compartment Component View
GM350034Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Clamp
2 Air Duct
3 Clamp
4 Mass Air Flow (MAF) Sensor/Intake Air Temperature (IAT)
5 Air Cleaner Assembly
6 Air Restriction Indicator
Fig 13: Engine View - Upper Left Component View
GM750165Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine
2 Injector Connector
3 Ignition Coil
4 Ignition Coil Connector
5 Throttle Position (TP) Sensor Connector
6 Throttle Actuator Control (TAC) Motor Connector
7 Evaporative Emissions (EVAP) Canister Purge Solenoid Connector
8 Generator Connector
Fig 14: Camshaft Position (CMP) Sensor Component View
GM750166Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine
2 Camshaft Position (CMP) Sensor
3 Camshaft Position (CMP) Sensor Connector
Fig 15: Engine View - Upper Right Component View
GM750169Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Harness
2 Manifold Absolute Pressure (MAP) Sensor
3 Manifold Absolute Pressure (MAP) Sensor Connector
4 Engine
5 Ignition Coil Connector (Engine Side)
6 Throttle Actuator Control (TAC) Motor
7 Ignition Coil Connector (Harness Side)
8 Engine Coolant Temperature (ECT) Sensor Connector
9 Ignition Coil
Fig 16: Engine View - Lower Right Component View
GM750172Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 A/C Compressor Clutch
2 A/C Compressor Clutch Connector
3 Engine Wiring Harness
4 Engine Oil Level Sensor Connector
5 Knock Sensor (KS) 2 Connector
6 Knock Sensor (KS) 2
7 Starter Relay Output (S-Terminal Feed)
Fig 17: Engine View - Lower Left Component View
GM750174Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine
2 Knock Sensor (KS)-1
3 Knock Sensor (KS)-1 Connector
4 Engine Harness
5 Engine Harness Ground
Fig 18: Accelerator Pedal Position (APP) Sensor Connector Component View
GM751380Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Accelerator Pedal Position (APP) Sensor Connector
2 Accelerator Pedal Position (APP) Sensor
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