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Oxygen sensor/antiknock sensor

Tiny
RONSTEPHENS1
  • MEMBER
  • 2001 GMC C2500
  • V8
  • 2WD
  • AUTOMATIC
  • 158,000 MILES
Local oil change shop said that I should change all 4 O2 sensors @$569. And take to a place that works on the engine to change antiknock sensor for about $1,200. What is your advice?
Tuesday, December 14th, 2010 AT 11:26 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If your service engine light isn't on don't bother
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Tuesday, December 14th, 2010 AT 11:39 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
1st step should be to check for codes
I am not aware of any recommendation that say that all O2 sensors need to be replace at once
If you can get the codes I will try and get you why you need and about how much it should cost
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Tuesday, December 14th, 2010 AT 11:41 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It's also another reason to just get an oil change and oil filter at those type of places as they don'tknow what they are doing other than oil changes.
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Tuesday, December 14th, 2010 AT 11:44 PM

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