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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 636 (ENGINE EXHAUST SYSTEM)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS (L47)
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Fastener Tightening Specifications (L47)
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Fastener Tightening Specifications (L47)
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Fastener Tightening Specifications (L47)
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Catalytic Converter Nut | 25 N.m | 18 lb ft |
| Center Exhaust Hanger Bolt | 30 N.m | 22 lb ft |
| Coil Cassette Ground Wire Nut | 17 N.m | 13 lb ft |
| EGR Inlet Pipe Nut | 60 N.m | 44 lb ft |
| Engine Frame Bolt | 191 N.m | 141 lb ft |
| Engine Mount Nut | 80 N.m | 59 lb ft |
| Exhaust Manifold Bolt | 25 N.m | 18 lb ft |
| Exhaust Manifold Nut | 25 N.m | 18 lb ft |
| Exhaust Manifold Rear Pipe to Exhaust Manifold Flange Seal Retainer Bolt | 25 N.m | 18 lb ft |
| Exhaust Manifold Rear Pipe to Right Exhaust Manifold Bolt | 40 N.m | 30 lb ft |
| Front Exhaust Manifold Pipe Bolt | 25 N.m | 18 lb ft |
| Front Exhaust Manifold Pipe Support Bolt | 25 N.m | 18 lb ft |
| Intermediate Shaft Pinch Bolt | 45 N.m | 33 lb ft |
| Muffler Clamp Nut | 40 N.m | 30 lb ft |
| Power Steering Gear Heat Shield Bolt | 9 N.m | 80 lb in |
| Rear Exhaust Hanger Bolt | 50 N.m | 37 lb ft |
| Rear Exhaust Hanger Nut | 30 N.m | 22 lb ft |
| Secondary AIR Tube Nut | 12 N.m | 106 lb in |
| Transaxle Mount Nut | 80 N.m | 59 lb ft |
| Vehicle Speed Sensor Heat Shield Nut | 50 N.m | 37 lb ft |
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.