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 G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1140 (ENGINE CONTROLS AND FUEL - 6.6L (LMM) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSENGINE COOLANT TEMPERATURE SENSOR REPLACEMENTREMOVAL PROCEDURE

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Removal Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.

Fig 1: View Of Engine Wiring Harness Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Drain the cooling system to a level below the engine coolant temperature (ECT) sensors. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac-N-Fill) .
Remove the generator. Refer to Generator Replacement (4.3L) or Generator Replacement (4.8L, 5.3L, 6.0L, and 6.2L) or Generator Replacement (6.6L) .
Disconnect the engine wiring harness electrical connector (1) from the appropriate ECT sensor.

Fig 2: View Of ECT Sensors

Courtesy of GENERAL MOTORS CORP.

Remove the appropriate ECT sensor (1).

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.