GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2003 🢒 Yukon - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 Cooling System Connector End Views
Table 1: Coolant Level Switch
Table 2: Engine Coolant Temperature (ECT) Sensor

Coolant Level Switch


Object Number: 537107 Size: CH

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


Object Number: 666646 Size: CH

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