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Discussion Starter · #1 ·
Im doing a little service on the truck this weekend like oil change, fuel filter, etc and was wondering if i should change my o2 sensors also. It has 83k on it, but still runs fine. Seeing as they are about $70 a pop id rather not change them enless its going to give me better mpg or some kind of benefit.
 

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Do it! They do get tired and typically crap out around 80-100K

Performance-wise, worn O2 sensors are the primary reason for excessive emissions because they don't send accurate fuel-burn information to the vehicle's computer. Tired oxygen sensors can also cause engine surging and hesitating, and they accelerate catalytic-converter damage.

http://www.mr2.com/TEXT/O2_Sensor.html
 

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Discussion Starter · #3 ·
very informative link, thanks. will the bosche ones from autozone perform nicely or is there any other brands you would recommend?
 

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very informative link, thanks. will the bosche ones from autozone perform nicely or is there any other brands you would recommend?
Bosch is excellent I replaced mine with them. I believe the OEMs are even stamped Bosch :rofl2: In a AC DELCO package
 

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Bosch, AC delco, NGK all are good, overall, for most GM truck needs. Might want to get you some pb blaster and an O2 sensor socket while you're at it.
 
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