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 DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (ENGINE MECHANICAL - 4.3L UNIT REPAIR)REPAIR INSTRUCTIONSINTAKE MANIFOLD DISASSEMBLE (LU3)

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Intake Manifold Disassemble (LU3)

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Intake Manifold Disassemble (LU3)

WARNING: This page is about a different variant/trim than selected.

Remove the nuts, the studs, and the accelerator control cable bracket.

Fig 1: Accelerator Control Cable Bracket
Courtesy of GENERAL MOTORS CORP.
Remove the throttle body attaching studs.

Fig 2: Throttle Body Attaching Studs
Courtesy of GENERAL MOTORS CORP.
Remove the throttle body.
Remove the throttle body to upper intake manifold gasket.
Discard the throttle body to upper intake manifold gasket.

Fig 3: Throttle Body-To-Upper Intake Manifold Gasket
Courtesy of GENERAL MOTORS CORP.
Remove the water outlet studs.
Remove the water outlet (1 or 2).
Remove the engine coolant thermostat.

Fig 4: Engine Coolant Thermostat
Courtesy of GENERAL MOTORS CORP.

Important: Note the position and direction of the exhaust gas recirculation (EGR) valve before removal. It is possible to improperly install the EGR valve 180 degrees from the original position.
Remove the exhaust gas recirculation (EGR) valve bolts. Some applications will not have an EGR valve.

Fig 5: EGR Valve
Courtesy of GENERAL MOTORS CORP.

RENDER: 1.0x

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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.