Cooling System Connector End Views

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Coolant Level Switch Connector End View

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

Engine Coolant Temperature (ECT) Sensor Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12162194 2-Way F Metri-Pack 150.2 Series Sealed (BLK)
Pin	Wire Color	Circuit No.	Function
A	GRY	720	Low Reference
B	YEL	410	ECT Sensor Signal