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- 2nd Generation S-series (1995-2005) Tech (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/)

- - P0055 OBDII Code (https://blazerforum.com/forum/2nd-generation-s-series-1995-2005-tech-41/p0055-obdii-code-49957/)

rlbates60

10-07-2010 05:48 PM

P0055 OBDII Code

I have a 2004 Blazer that is giving me a P0055 code. It says it is for sensor 3. Where is this O2 sensor located? I only see 2. Thanks for the help.

swartlkk

10-07-2010 05:56 PM

B1S3 is the post cat sensor.

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