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2002 chevy trailblazer_lt
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174 Posts
I think if I were troubleshooting this I would pull the connector at the PCM, identify the 3 wires, connect a dmm set to resistance across 2 at a time, then wiggle the harness and connector at the sensor, watching for fluctuations in the readings. I have a found a good many flaky connections and/or degraded wires doing this.
 

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2005 chevy trailblazer_ls
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14 Posts
Discussion Starter #22
I did change out the connector for the sensor, because I wasn't getting a constant 12v. On the red wire, and soldered it in, so should be good on that end, and tracing the wires back, didn't find an issue the rest of the way. It'll be a few days til I can get the ACDelco sensor in to see if it works.
 

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Chevy Trailblazer 2008 LTZ (4.2L)
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105 Posts
Is there a mistake in the title of the topic?
What error code is actually 430 or 340? :oops:
 
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