Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - INTRODUCTIONSPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
2005 Buick LeSabre Limited, 4T65E/M15
Fastener Tightening Specifications
2005 Buick LeSabre Limited, 4T65E/M15SECTION Fastener Tightening Specifications
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Accelerator Cable Bracket Retaining Nuts and Bolts | 16 N.m | 12 lb ft |
| Air Cleaner Upper and Lower Housing Screws | 4 N.m | 35 lb in |
| Air Cleaner Intake Duct Clamp | 2 N.m | 18 lb in |
| Camshaft Position (CMP) Sensor Retaining Bolt | 10 N.m | 89 lb in |
| Crankshaft Position (CKP) Sensor Bolts | 30 N.m | 22 lb ft |
| Exhaust Gas Recirculation (EGR) Valve Inlet Pipe Bolt | 50 N.m | 37 lb ft |
| EGR Valve Inlet Pipe Stud | 50 N.m | 37 lb ft |
| EGR Valve Inlet Pipe to Exhaust Manifold Bolt | 29 N.m | 21 lb ft |
| EGR Valve Outlet Pipe to Inlet Pipe Nut | 29 N.m | 21 lb ft |
| EGR Valve Outlet Pipe to Intake Manifold Bolt | 29 N.m | 21 lb ft |
| EGR Valve Retaining Nuts | 30 N.m | 22 lb ft |
| Engine Coolant Temperature (ECT) Sensor | 20 N.m | 15 lb ft |
| Evaporative Emission (EVAP) Canister Bracket Nuts | 6 N.m | 53 lb in |
| Evaporative Emission (EVAP) Canister Vent Valve Bolt | 6 N.m | 53 lb in |
| Fuel Rail Hold Down Bolts | 10 N.m | 89 lb in |
| Fuel Rail Hold-Down Nuts | 10 N.m | 89 lb in |
| Fuel Sender Access Panel Bolts | 2 N.m | 18 lb in |
| Fuel Tank Filler Pipe Ground Strap Screw | 9 N.m | 80 lb in |
| Fuel Tank Filler Pipe Hose Clamp | 3.5 N.m | 31 lb in |
| Fuel Tank Retaining Strap Bolts | 42 N.m | 31 lb ft |
| Heated Oxygen Sensors (HO2S) | 41 N.m | 30 lb ft |
| Idle Air Control (IAC) Valve Attaching Screws | 3 N.m | 27 lb in |
| Ignition Coil to Ignition Control Module Screws | 4.5 N.m | 40 lb in |
| Ignition Control Module (ICM) 14-Way Connector To Module Bolt | 2.1 N.m | 19 lb in |
| In-Line Fuel Filter Outlet Nut | 30 N.m | 22 lb ft |
| Intake Air Duct Clamps | 2 N.m | 18 lb in |
| Knock Sensor (KS) | 19 N.m | 14 lb in |
| Knock Sensor Heat Shield Bolts | 60 N.m | 44 lb ft |
| Mass Air Flow (MAF) Sensor Attaching Screws | 3 N.m | 27 lb in |
| Powertrain control module (PCM) harness Connector to PCM | 8 N.m | 71 lb in |
| Spark Plug (Initial Installation) | 27 N.m | 20 lb ft |
| Spark Plug (Reinstallation) | 15 N.m | 11 lb ft |
| Throttle Body Retaining Nuts | 10 N.m | 89 lb in |
| Throttle Body Support Bracket Fasteners | 10 N.m | 89 lb in |
| Throttle Position (TP) Sensor Screws | 2 N.m | 18 lb in |
RENDER: 1.0x
NO RELATED
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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.