Question about 2008 Chevrolet Silverado 1500 2WD

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How do i clean a throttle body on a 08 chevy silverado v6 4.3l

I took to emissions and they said throttle position sensor i replaced & cleared codes engine light came back on.. had ran codes again it says { po121 throttle/pedal position sensor/ switch a circuit range/ performance problem] so i looked up my problem on web and another person had same problem and took off throttle body cleaned it and now its great... need to know how to do it plz

Posted by Anonymous on

  • todd kellner Feb 14, 2015

    Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? Do you have a throttle cable or drive by wire throttle?

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There are a lot of good videos on YouTube to help with this. Although most are for the 5.3L engine the process and procedures are the same. The hardest and most time consuming part is removing the top cover and all the air induction tubing. As long as you have the time, skills and patience to do your own work this is not a terribly difficult task. With hourly rates as high as $125 hr I do all my own maintenance and use YouTube videos all the time. This one will give you a good idea of what's involved. Good luck!
https://www.youtube.com/watch?v=4IrL0VtxcC4
https://www.youtube.com/watch?v=T56CZ4hPdrk

Posted on Feb 14, 2015

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Hi there,
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Posted on Jan 02, 2017

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