Sierra, Silverado 2006-2007

Removal & Installation

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  1. Drain the cooling system to a level below the ECT sensor.
  2.  
  3. On 6.6L diesel engines, remove the alternator.
  4.  
  5. Unplug the harness connector from the ECT sensor.
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  7. Remove the ECT sensor from the engine.
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  9. Installation is the reverse of removal. If reusing the old sensor, coat the threads with GM sealant 12346004 or equivalent. New sensors are already coated; additional sealant is not needed. Tighten the sensor to 15 ft. lbs. (20 Nm).

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    Fig. ECT sensor mounting-4.3L engines



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    Fig. ECT sensor mounting-4.8L, 5.3L, 6.0L and 6.2L engines



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    Fig. ECT sensor mounting-6.6L engines

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