2002 Chevy Tahoe oxygen sensors

2002 CHEVROLET TAHOE
125,000 MILES • V8 • 4WD • AUTOMATIC
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BRAE30
  • MEMBER
  • 1 POST
I need help in changing my oxygen sensors. I had a reading done the result was I have one in the front and two in the back that need to be change. I believe I have four altogether I want to change them all. Can you help me?
Mar 6, 2009 at 12:43 AM
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BLACKOP555
  • ✓Experienced Mechanic
  • 10,386 POSTS
why would you replace them all? the ones after the catalytic convertors are just for convertor efficency. dont affect the engine at all!

replace all the ones before the convertor.

i cant help you replace them but i can give you some tips.

first get the exhaust system hot, they come out easier with ahot exahust. to put the new ones on use antiseize on the thread or youll never get them out.
Mar 8, 2009 at 2:14 PM
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