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Code 128

Discussion in 'Chevy Trailblazer Forum (GMC Envoy)' started by danoo, Jul 6, 2011.

  1. danoo

    danoo New Member

    New coolant temp. sensor installed did not fix code 128.Does anyone know parameters for sensor,R value for 80F,90F,190F, ect.Was told possible thermostat failture.Also does the sensor control dash gauge and also go to PCM? Thanks in advance. sorry bout that, 2003 envoy inline 6
     
    Last edited: Jul 14, 2011
  2. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    What Year and Model??
     
  3. danoo

    danoo New Member

    sorry bout that,2003 envoy inline 6
     

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