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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - INTRODUCTIONCOMPONENT LOCATORENGINE CONTROLS COMPONENT VIEWS
2005 Buick LeSabre Limited, 4T65E/M15

Engine Controls Component Views

2005 Buick LeSabre Limited, 4T65E/M15SECTION Engine Controls Component Views
Fig 1: Locating PCM (Left Front Corner Of Engine Compartment)
GM460288Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Powertrain Control Module (PCM) C1
2 Powertrain Control Module (PCM) C2
3 Air Cleaner Assembly
4 Powertrain Control Module (PCM)
5 S105
Fig 2: Locating IAT Sensor & Cruise Control Module (Left Side Of Engine Compartment)
GM460294Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Intake Air Temp (IAT) Sensor
2 Cruise Control Module
3 Air Cleaner Assembly
Fig 3: Locating Manifold Absolute Pressure Sensor
GM460295Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Manifold Absolute Pressure (MAP) Sensor
Fig 4: Locating Components In Upper Front Of Engine
GM460302Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Injector 3
2 Evaporative Emissions (EVAP) Purge Canister
3 Fuel Injector 5
4 Idle Air Control (IAC) Valve
5 Throttle Position (TP) Sensor
6 Mass Air Flow (MAF) Sensor
7 S106
8 Engine Coolant Temp (ECT) Sensor
9 C103
10 S108
11 S107
12 Ignition Control Module (ICM)
13 To Manifold Absolute Pressure (MAP) Sensor
14 Fuel Injector 1
Fig 5: Locating Components In Upper Side Of Engine
GM460305Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Exhaust Gas Recirculation (EGR) Valve
2 Fuel Injector #6
3 Fuel Injector #4
4 Fuel Injector #2
5 To Generator
6 To Air Solenoid
7 Heated Oxygen Sensor (H02S) Bank 1 Sensor 1
8 S103
9 S104
10 To PCM
11 C100
Fig 6: Locating Components In Lower Rear Of Engine
GM460307Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Engine Oil Pressure Sensor
2 Vehicle Speed Sensor (VSS)
3 Power Steering Pressure Sensor
4 C125
Fig 7: Locating Knock Sensor & Starter Solenoid (Lower Front Of Engine Component)
GM460459Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Knock Sensor
2 Starter Solenoid
Fig 8: Locating EVAP Canister Purge Valve & MAP Sensor (Rear Top Of Engine)
GM460460Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Evaporative Emissions (EVAP) Canister Purge Valve
2 Generator
3 MAP Sensor
Fig 9: Fuel Pump & Sender Assembly
GM61866Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuel Tank Pressure (FTP) Sensor
2 Fuel Pump and Sender Assembly
3 Fuel Pump Strainer
4 Fuel Level Sensor
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • 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.