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 MANUALSCHEVROLET2006CHEVY EXPRESS G3500, VAN CARGO, 4.8 VREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (ENGINE CONTROL SYSTEM - 6.6L (LLY) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSINTAKE AIR HEATER (IAH) REPLACEMENTINSTALLATION PROCEDURE

2006 Chevrolet Chevy Express G3500, Van Cargo, 4.8 V

Installation Procedure

2006 Chevrolet Chevy Express G3500, Van Cargo, 4.8 VSECTION Installation Procedure

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

Fig 1: Intake Air Heater

GM1602066

Courtesy of GENERAL MOTORS CORP.

Install the air inlet tubes to the intake air heater.

NOTE: Refer to Fastener Notice .

Install the intake air heater bolts.
Tighten: Tighten the bolts to 20 N.m (15 lb ft).

Fig 2: Air Inlet Tube

GM1602060

Courtesy of GENERAL MOTORS CORP.

Install the air inlet tube and NEW gaskets.
Install the air inlet tube nuts.
Tighten: Tighten the nuts to 25 N.m (18 lb ft).
Connect the intake air heater electrical connector.
Connect the MAP sensor electrical connector.
Install the engine harness clip to the air inlet tube.

Fig 3: Air Inlet Tube

GM1602059

Courtesy of GENERAL MOTORS CORP.

Install the air inlet tube to intake manifold tube bolt and nut.
Tighten: Tighten the bolt/nut to 10 N.m (89 lb in).

Fig 4: Electrical Harness Bolts

GM1602057

Courtesy of GENERAL MOTORS CORP.

Install the electrical harness bolts.
Tighten: Tighten the bolts to 4 N.m (35 lb in).

Fig 5: View Of Charged Air Cooler Outlet Duct

GM1334381

Courtesy of GENERAL MOTORS CORP.

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.