1997 Chevy Suburban Check engine light

1997 CHEVROLET SUBURBAN
141,000 MILES • V8 • 4WD • AUTOMATIC
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MICHAEL H
  • MEMBER
  • 2 POSTS
My check engine light was on for an o2 sensor so I replaced all of them. 2 weeks later the check engine light was on again. This time it is for poor porformance on bank 2. I checked and all the o2 sensors are regulating properly. Do you have any suggestions to what it might be.
Oct 24, 2008 at 1:00 PM
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LEGITIMATE007
  • ✓Experienced Mechanic
  • 5,121 POSTS
It could be a bad catylitic converter have it tested, if I am not mistaken ,this model has more than one
Oct 24, 2008 at 2:24 PM
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BMRFIXIT
  • ✓Experienced Mechanic
  • 19,053 POSTS
Check for vacuum leaks
if you have codes # will help to identifying the issue
let me know what do you have for codes

need manual CHECK IT @
https://www.2carpros.com/kpages/auto_repair_manuals.htm
Oct 24, 2008 at 2:38 PM
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