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 638 (ENGINE COOLING 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 and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Identifying Fastener Tightening Specifications (L47)
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Condenser Mounting Bolt | 13 N.m | 115 lb in |
| Cooling Fan Mounting Bolt | 6 N.m | 53 lb in |
| EGR Inlet Pipe Bolt | 25 N.m | 18 lb ft |
| EGR Inlet Pipe Nut | 60 N.m | 44 lb ft |
| Electric Cooling Fan Blade Retaining Nut | 6 N.m | 53 lb in |
| Electric Cooling Fan Motor Mounting Screw | 6 N.m | 53 lb in |
| Engine Coolant Heater Bolt | 10 N.m | 89 lb in |
| Fuel Rail Bracket Retaining Nut | 4 N.m | 35 lb in |
| Oil Level Indicator Tube Nut | 10 N.m | 89 lb in |
| Rear Lift Bracket Bolt | 24 N.m | 18 lb ft |
| Secondary AIR Relay Bracket Nut | 6 N.m | 53 lb in |
| Surge Tank Bolt and Nut | 6 N.m | 53 lb in |
| Surge Tank Inlet Fitting | 47 N.m | 35 lb ft |
| Thermostat Housing Bolt | 10 N.m | 89 lb in |
| Transaxle Oil Cooler Line (at Radiator) | 31 N.m | 23 lb ft |
| Transaxle Oil Cooler Line Retaining Bolt | 6 N.m | 53 lb in |
| Upper Radiator Mounting Bracket Bolt | 10 N.m | 89 lb in |
| Water Housing Crossover Bolt | 25 N.m | 18 lb ft |
| Water Pump | 100 N.m | 74 lb ft |
| Water Pump Belt Tensioner Bolt | 10 N.m | 89 lb in |
| Water Pump Cover bolt | 10 N.m | 89 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.