Question about 2003 Pontiac Bonneville
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Posted on Jan 02, 2017
One is front of the cat, and one after the cat of the exhaust.
The OBD Scanner should tell you which bank is producing the error.
Bank one is the front one.
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Posted on Feb 21, 2009
Hello oldiro: My name is Roger and I can help. From under the vehicle look up between the transmission and the side of the block. Mid motor above the pan rail there is a bolted in sensor. This should be the crank sensor.It will have two wires plugged in to it. Please rate this answer as this lets us know you received the information you asked for. Should you need further help please just ask. Thank You for using FixYa. Roger
Posted on May 06, 2009
SOURCE: where is the #3 bank
The oxygen sensor is located in the flow of exhaust and there will be
two. the first is at the exit of the exhaust manifold where the head
pipe attaches before the converter and the other is just after the cat
Posted on Sep 10, 2009
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