Coolant Level Switch - 8.1L

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Coolant Level Switch Terminal Identification - 8.1L

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12052644 2-Way F Metri-Pack 150 Series Sealed (GRY)
Pin	Wire Color	Circuit No.	Function
A	LT GRN	1478	Coolant Level Switch Signal
B	BLK	550	Ground