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TrailBlazer 2002-2009
2023- 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
Platform: GMT 305, 360, & 370.

evap sensor

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Old Jul 10, 2019 | 5:52 PM
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Jonathan Esparza
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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.
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Old Jul 10, 2019 | 9:45 PM
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tech2
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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
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Old Jul 11, 2019 | 6:57 PM
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Jonathan Esparza
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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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