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 216 (ENGINE CONTROLS AND FUEL - 3.6L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSTHROTTLE BODY ASSEMBLY REPLACEMENT (LP1, LY7)INSTALLATION PROCEDURE

2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure

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.

Carefully clean the throttle body mounting surfaces of any gasket and/or seal material.

Fig 1: View Of Throttle Body

Courtesy of GENERAL MOTORS CORP.

Install the throttle body and NEW gasket.

NOTE: Refer to Fastener Notice .

Install the throttle body bolts.
Tighten: Tighten the throttle body bolts to 10 N.m (89 lb in).

Fig 2: View Of Wiring Harness Conduit

Courtesy of GENERAL MOTORS CORP.

Install the wiring harness conduit.

Fig 3: View Of Throttle Body Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Install the throttle body electrical connector.
Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement .
Perform the throttle learn procedure. Refer to Throttle Learn .
Use the scan tool to clear all DTCs.

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.