General Motors — Engine Coolant Temperature (ECT) Sensor Replacement
Repair & overhaul
From a General Motors service manual — check it applies to your exact model before use.
Before you start
- Care must be taken when handling the ECT sensor; damage affects proper operation of the MEFI system
Procedure
- Disconnect negative battery cable
- Disconnect ECT electrical connector
- Remove ECT sensor
- Coat ECT sensor threads with teflon tape sealant prior to installation
- Install ECT sensor; torque to 12 N·m (108 lb.in.)
- Connect ECT electrical connector
- Connect negative battery cable
Specs & values
- ECT Sensor: 12 N·m (108 lb.in.)
Source: General Motors service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.