Engine Coolant Temperature Sensor Replacement

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Engine Coolant Temperature Sensor

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill L96)Cooling System Draining and Filling (Vac N Fill L96)Cooling System Draining and Filling (Vac N Fill L83 L86)Cooling System Draining and Filling (Static Fill L83 L86) . Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (Chevrolet and GMC) Air Cleaner Outlet Duct Replacement (Cadillac)
1	Engine Coolant Temperature Sensor CAUTION: Refer to Component Fastener Tightening Caution . Procedure Disconnect the engine coolant temperature sensor electrical wiring harness connector. Tighten 20 N.m (15 lb ft)

Callout

Component Name

Preliminary Procedure
Partially drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill L96)Cooling System Draining and Filling (Vac N Fill L96)Cooling System Draining and Filling (Vac N Fill L83 L86)Cooling System Draining and Filling (Static Fill L83 L86) .
Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement (Chevrolet and GMC) Air Cleaner Outlet Duct Replacement (Cadillac)

Engine Coolant Temperature Sensor

CAUTION:

Refer to Component Fastener Tightening Caution .

Procedure
Disconnect the engine coolant temperature sensor electrical wiring harness connector.
Tighten
20 N.m (15 lb ft)