O2 sensor

Polski Polak said:

damn i dont know um do u know where they all are??? thanks

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There are 4 of them. They are labeled as follows:

Bank 1, Sensor 1: In the exhaust manifold for the rear cylinder bank
Bank 1, Sensor 2: Just before (in front of) the catalytic converter
Bank 1, Sensor 3: Just after (behind) the catalytic converter
Bank 2, Sensor 1: In the exhaust manifold for the front cylinder bank

If you have an O2 sensor code, it will be noted with B2S1, B1S3, etc. and those correspond to the table above. There are 2 different kinds of sensors for a '96. One type fits the B1S1 and B2S1 positions and the other type fits the B1S2 and B1S3 positions. They are all heated oxygen sensors. I have heard of problems with the Bosch sensors, so it is recommended to use the AC-Delco ones available from some local parts shops or www.rockauto.com or www.gmpartsdirect.com. Strangely, the Delcos are actually a little less expensive than the Bosch sensors.

Let us know the codes if you have any and we can tell you which one(s) to replace and how to get the job done.