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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
Platform: GMT 305, 360, & 370.

Can't fix rough idle

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Old February 7th, 2017, 6:24 PM
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Default Can't fix rough idle
Ok, my 06 trailblazer 4.0 started running bad! Sputtering, stalling out, etc. Went to autozone and checked the codes. Said bad o2 sensor bank 1. So I replaced it and plugs. It still runs bad!
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Old February 7th, 2017, 6:28 PM
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So I go back and get the codes checked again. Now I need a fuel purge. So I replaced it. And it still runs bad!
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Old February 7th, 2017, 6:31 PM
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Now it says p0171 bank 1 to lean.
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Old February 7th, 2017, 6:33 PM
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Heres a vid of were i found a broken seal. I cant find the hose. Couald this cause the problem?
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