2004 Chevy Tahoe Catalytic Convertor-2004 Z71 Tahoe

2004 CHEVROLET TAHOE
108,000 MILES • V8 • FWD • AUTOMATIC
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DSCHMEELK
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  • 2 POSTS
Hello, I recently replaced my catalytic convertor, mass airflow sensor, and 02 Sensors on my 2004 Z71. The check engine light went off for about a month and is back on. What could be the problem? Thx!
Aug 23, 2010 at 12:14 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
What is the code number being set?
Aug 23, 2010 at 12:57 AM
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DSCHMEELK
  • MEMBER
  • 2 POSTS
Not sure yet...Will know tomorrow. Any ideas w/o knowing?
Aug 23, 2010 at 1:19 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
No, not at all

That's like asking me what the guy knocking at your door wants without knowing who's knocking on the door.
That light can come on for over 300 different reasons.
Aug 23, 2010 at 1:28 AM
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