Cooling System Connector End Views

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 GMC Yukon XL, 2004 GMC Yukon, 2004 Chevrolet Tahoe, 2004 Chevrolet Suburban, and 2004 Cadillac Escalade EXT. However, it is still accessible from the selected car via links, so may be relevant.

Coolant Level Switch Connector End View - Gas

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

Coolant Level Switch Connector End View - Diesel

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15324243 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

Engine Coolant Temperature (ECT) Sensor Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		15336024 2-Way F GT 150 Series Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
1	BLK	407	Low Reference
2	YEL	410	ECT Sensor Signal