Astro 1985-2005
Chevy's first entry into the minivan class, offered in All Wheel Drive to add to its versatility.
Platform: M-Body

08 Chevy 1500 P4020

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Oct 29, 2018 | 6:08 PM

krisreece

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08 Chevy 1500 P4020

i know that i need to replace an o2 sensor in my chevy. it says bank 1. i need to know which cat converter is bank one and whether or not i need to change the upstream or downstream sensor. anybody got anything?

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