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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 190 (ENGINE EXHAUST SYSTEM)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Fastener Tightening Specifications
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Fastener Tightening Specifications
WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Bumper Nuts | 25 N.m | 18 lb ft |
| Catalytic Converter-to-Exhaust Manifold Nuts | 50 N.m | 37 lb ft |
| Drive Shaft Center Bearing Heat Shield Bolts | 8 N.m | 71 lb in |
| Exhaust Manifold Heat Shield Bolts | 10 N.m | 89 lb in |
| Exhaust Manifold-to-Cylinder Head Bolts (LH2, LC3) | 25 N.m | 18 lb ft |
| Exhaust Manifold-to-Cylinder Head Bolts (LY7) | 20 N.m | 15 lb ft |
| Exhaust Manifold-to-Cylinder Head Nuts (LH2, LC3) | 30 N.m | 22 lb ft |
| Exhaust Manifold-to-Cylinder Head Studs (LH2, LC3) | 6 N.m | 53 lb in |
| Muffler Exhaust Pipe-to-Exhaust Manifold Nuts (LH2, LC3) | 30 N.m | 22 lb ft |
| Muffler Nuts (LY7) | 22 N.m | 16 lb ft |
| Tunnel Brace Bolts | 25 N.m | 18 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.