Can you tell me how many O2 sensors?

Tiny
DEERSLAYER641
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • 88,000 MILES
I have a 2002 Chev. Silverado 1500 with the 5.3L v-8 engine. Can you tell me how many O2 sensors it has in the exhaust system? I have been told four, but I find that hard to believe.

Service engine light has come on and I took it to Auto Zone to see what the problem was. I was told an O2 sensor was bad, so I put in a new one.

Light remained on so I went back and was told it was a different one, so I switched the two that I could find. The light remained on, so I had it turned off and then it came on again. When I had it turned off, they looked on their parts computer and it said that there are 4 sensors. Is this correct?
Do you
have the same problem?
Yes
No
Tuesday, January 10th, 2012 AT 5:16 PM

1 Reply

Tiny
DOCFIXIT
  • EXPERT
Yes, two upstream and two downstream sensors
Was this
answer
helpful?
Yes
No
+2
Tuesday, January 10th, 2012 AT 5:26 PM

Please login or register to post a reply.

Recommended Guides