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Engine Coolant Temperature Sensor: Installation

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Whenever ECT sensor is removed, coat threads with Sealer (12346004 or equivalent) before reinstallation. Install ECT sensor into engine and tighten to specification. See TORQUE SPECIFICATIONS .
  2. Reconnect harness connector to ECT sensor. Reinstall generator. Tighten generator mounting bolts to specification. Connect cable to generator positive post and tighten nut to specification. Reinstall engine lift hook. Reinstall A/C line bracket-to-engine lift hook bolt.
  3. Install a 3/8" drive breaker bar onto the drive belt tensioner. See Figure. Turn breaker bar clockwise enough to allow installation of drive belt. Install drive belt. Release tension on drive belt tensioner.
  4. Reconnect negative battery cable. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING  under COOLING SYSTEM.
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