Question about 2011 GMC Sierra 1500

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Po 454 code

Check engine light

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Code P0454 is :

Evaporative Emission Control System Pressure Sensor
Intermittent
hope it help

Posted on Dec 08, 2014

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Posted on Jan 02, 2017

supermanalde
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SOURCE: 1999 GMC suburban is markin PO 1345 code.

That is a cam to crank position correlation code. I understand you can adjust it by turning the distributor until the value is right. You need a scan tool to see the value and check it each time you adjust the distributor.

Posted on Jul 18, 2012

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