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Home >> Chevrolet >> 2025 >> Trailblazer ACTIV, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 1.35L (L3T) - Repair Instructions >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement - Engine Block
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Engine Coolant Temperature Sensor Replacement - Engine Block

GM5208822Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Partially drain the cooling system. Cooling System Draining and Filling (GE-47716 L3T) , or Cooling System Draining and Filling (Static L3T)
  2. Generator Replacement (L3T)
1 Engine Coolant Temperature Sensor
Procedure 
Disconnect the engine coolant temperature sensor electrical wiring harness connector.
Tighten 
9 N.m (80 lb in)