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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROLS - REMOVAL & INSTALLATIONTORQUE SPECIFICATIONS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Torque Specifications
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | |||
|---|---|---|---|---|
| Accelerator Pedal Position Sensor Retaining Screws (5.3L) | 15 (20) | |||
| Air Cleaner Housing/Washer Solvent Tank Nuts | 11 (15) | |||
| Battery Cable-To-Battery Bolt | 11 (15) | |||
| Camshaft Position Sensor Retaining Bolt (5.3L) | 21 (29) | |||
| Crankshaft Sensor Retaining Bolt (5.3L) | 18 (25) | |||
| Engine Coolant Temperature Sensor | ||||
| 4.2L | 12 (16) | |||
| 5.3L | 15 (20) | |||
| Engine Lift Hook Bolts | 37 (50) | |||
| Fuel Filter Bracket Screw | (1) | |||
| Fuel Tank Shield Bolts | 18 (25) | |||
| Fuel Tank Strap Retaining Bolts | 24 (32) | |||
| Generator Mounting Bolts | 37 (50) | |||
| Intake Manifold Retaining Bolts | 12 (16) | |||
| Knock Sensor Retaining Bolt | ||||
| 4.2L | 18 (25) | |||
| 5.3L | 15 (20) | |||
| Oxygen Sensors | 30 (41) | |||
| Power Steering Pump Mounting Bolts | 18 (25) | |||
| Spark Plugs | ||||
| 4.2L | 13 (18) | |||
| 5.3L | 11 (15) | |||
| INCH Lbs. (N.m) | ||||
| Accelerator Pedal Position Sensor Retaining Screws (4.2L) | 89 (10) | |||
| A/C Line Bracket-To-Engine Lift Hook Bolt | 89 (10) | |||
| Air Cleaner Outlet Duct Bolt | 89 (10) | |||
| Air Cleaner Resonator Mounting Bolts | 53 (6) | |||
| Air Cleaner Resonator-To-Throttle Body Clamp | 35 (4) | |||
| Camshaft Position Actuator Solenoid Valve Mounting Bolt | 89 (10) | |||
| Camshaft Position Sensor Retaining Bolt (4.2L) | 89 (10) | |||
| Crankshaft Position Sensor Retaining Bolt (4.2L) | 89 (10) | |||
| Crossover Fuel Pipe Retainer Clip Attaching Screws | 34 (3.8) | |||
| Engine Wiring Harness Bracket Nut | 89 (10) | |||
| EVAP Canister Purge Solenoid Bolt (5.3L) | 93 (10.5) | |||
| Fuel Filter Bracket Screw (5.3L) | 108 (12) | |||
| Fuel Hose To Fuel Tank Clamp | 22 (2.5) | |||
| Fuel Pressure Regulator Retainer Screw | 71 (8) | |||
| Fuel Rail Retaining Bolts | 89 (10) | |||
| Fuel Return Line Retainer Screw | 71 (8) | |||
| Fuel Return Pipe Attaching Screw | 44 (5) | |||
| Generator Positive Post Cable Nut | 80 (9) | |||
| Ignition Coil Retaining Bolts | ||||
| 4.2L | 89 (10) | |||
| 5.3L | 71 (8) | |||
| PCM Harness Connector Fasteners | 71 (8) | |||
| PCM Mounting Bolts | (1) | |||
| TAC Module Bracket Nuts | 89 (10) | |||
| Throttle Body Clamp | 62 (7) | |||
| Throttle Body-To-Intake Manifold Bolts | 89 (10) | |||
| Upper Engine Wire Harness Retainer Nut | 44 (5) | |||
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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.