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Home >> GMC >> 2005 >> Envoy 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.2L - Introduction >> Component Locator >> Engine Controls Component Views

Engine Controls Component Views

Fig 1: Upper Left Side of the Engine - Front
GM1492013Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Coolant Temperature (ECT) Sensor
2 Engine Harness
3 Powertrain Control Module (PCM) C1
4 Powertrain Control Module (PCM) C2
5 Powertrain Control Module (PCM) C3
6 Generator
Fig 2: Lower Left Side of the Engine
GM1492075Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emission (EVAP) Canister Purge Solenoid
2 Starter
3 Crankshaft Position (CKP) Sensor
4 Knock Sensor (KS) 2, Rear
5 Knock Sensor (KS) 1, Front
Fig 3: Upper Right Side of Engine - Front
GM1550801Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Secondary Air Injection (AIR) Solenoid (K18)
2 Camshaft Actuator Solenoid Assembly
3 Camshaft Position (CMP) Sensor
Fig 4: Front Lower Right Side Of Engine
GM747452Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) 1
Fig 5: Rear Upper Right Side Of Engine
GM747443Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Throttle Body
2 Intake Air Temperature (IAT) Sensor
3 Manifold Absolute Pressure (MAP) Sensor
Fig 6: Top Of Engine
GM1550688Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Ignition Coil 1
2 Ignition Coil 2
3 Ignition Coil 3
4 Ignition Coil 4
5 Ignition Coil 5
6 Ignition Coil 6
7 Fuel Injector 6
8 Fuel Injector 5
9 Fuel Injector 4
10 Fuel Injector 3
11 Fuel Injector 2
12 Fuel Injector 1
Fig 7: Right Side Of Transmission - Exhaust Pipe
GM747453Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Heated Oxygen Sensor (HO2S) 2
Fig 8: Rear Right Side Of Transmission
GM747454Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Automatic Transmission
2 Vehicle Speed Sensor (VSS)
Fig 9: Accelerator Pedal Sensor, Brake Pedal & Stop Lamp Switch
GM1488336Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Instrument Panel Harness
2 Accelerator Pedal Position (APP) Sensor
3 Accelerator Pedal
4 Brake Pedal
5 Stop Lamp Switch
Fig 10: Locating Secondary Air Injection Pump & Relay
GM1550751Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Secondary Air Injection (AIR) Pump
2 Secondary Air Injection (AIR) Pump Relay
Fig 11: Fuel Tank Components (Short Wheel Base)
GM1490767Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Tank Pressure (FTP) Sensor
2 Fuel Pump and Sender Assembly
3 Chassis Harness
4 Fuel Tank
5 Evaporative Emission (EVAP) Canister Vent Solenoid
Fig 12: Fuel Tank Components (Long Wheel Base)
GM1490769Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Tank Pressure (FTP) Sensor
2 Evaporative Emission (EVAP) Canister Vent Solenoid
3 Chassis Harness
4 Fuel Pump and Sender Assembly
5 Fuel Tank
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