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 MANUALSCHEVROLET2006SUBURBAN C1500, 5.3 ZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 679 (ENGINE CONTROLS - 8.1L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSENGINE COOLANT TEMPERATURE (ECT) SENSOR REPLACEMENTINSTALLATION PROCEDURE

2006 Chevrolet Suburban C1500, 5.3 Z

Installation Procedure

2006 Chevrolet Suburban C1500, 5.3 ZSECTION Installation Procedure

WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

If installing the old sensor, coat the threads with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the ECT sensor.

Fig 1: Locating ECT Sensor
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the sensor to 50 N.m (37 lb ft).
Install the ECT sensor electrical connector to the oil fill tube bracket.

Fig 2: Locating ECT Sensor Electrical Connector At Oil Fill Tube Bracket
Courtesy of GENERAL MOTORS CORP.
Connect the ECT sensor electrical connector (3).

Fig 3: View Of Ignition Coil, ECT And MAP Sensor Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
Refill the cooling system. Refer to Draining and Filling Cooling System (w/RPO HP2) or Draining and Filling Cooling System (w/o RPO HP2) in Engine Cooling.

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.