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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROLS - REMOVAL, OVERHAUL & INSTALLATIONFUEL SYSTEMS (GASOLINE)THROTTLE BODY (SFI)REMOVAL & INSTALLATION (3.4L)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Removal & Installation (3.4L)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Removal & Installation (3.4L)
- Drain cooling system. Disconnect negative battery cable. Remove air cleaner intake tube from throttle body. Disconnect IAC valve and TP sensor harness connectors from throttle body. Disconnect coolant hoses from throttle body.
- Remove heater pipe nut at throttle body. Disconnect accelerator control cable from throttle body. Remove accelerator cable bracket. Remove throttle body retaining bolts and nuts. Remove throttle body from intake manifold.
- Clean gasket surface on intake manifold and throttle body. Install NEW flange gasket. Install throttle body assembly. Install throttle body bolts and nuts and tighten to specification. See TORQUE SPECIFICATIONS . To complete installation, reverse removal procedure. Bleed cooling system. See COOLING SYSTEM BLEEDING under COOLING SYSTEM.
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.