2001 Chevy Blazer Temerature Sensor

2001 CHEVROLET BLAZER
110,000 MILES • 6 CYL • 2WD • AUTOMATIC
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THEDON
  • MEMBER
  • 4 POSTS
My engine light is on and the code for it is PO128. It is either thermostat or temp sensor (ECT). The truck doesn't run hot or anything , so I would not believe it would ve the thermostat. Is it hard to replace the sensor and where is it located at. Thanks,
Jan 21, 2008 at 6:46 AM
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DENNYP
  • ✓ASE Certified Mechanic
  • 1,824 POSTS
  • ASE Certified Mechanic
most often, it is a bad thermostat. The sensor is located on the driver side cylinder head, near the rear spark plug. It should have a two wire connector.
Jan 21, 2008 at 10:08 PM
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