TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
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evap sensor

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Old July 10th, 2019, 5:52 PM
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Default evap sensor

hey i jsut replace my evap sensor next to the engine block, my check engine light when off, but i hear i clicking sound coming from the sensor, i bought it of amazon. any toughts.
Old July 10th, 2019, 9:45 PM
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if you are referring to the purge solenoid...it will click...the pcm pulse width modulates the solenoid. its should not be on when the engine is off...only when the engine is running
Old July 11th, 2019, 6:57 PM
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Originally Posted by tech2
if you are referring to the purge solenoid...it will click...the pcm pulse width modulates the solenoid. its should not be on when the engine is off...only when the engine is running
So if it is a new sensor, it's normal for that to be clicking?




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