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'05 Chevy TB EXT
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4,353 Posts
There isn't much written about changing Oxygen Sensors in any sort of schedule --- maybe when they cease talking or won't heat up --- and they'll pop a code anyway........

... but I DO know that an engine will perk up with new ones.
 

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2003 chevy trailblazer_lt
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48 Posts
Discussion Starter · #22 ·
Just to let you guys know, it looks like problem solved. I checked the fuse and replaced it... again. but since, no codes.
Keep my fingers crossed. Thanks Guys.
 
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