Dear
Could you clear me what is the difference between these 2 oxygen sensors and which one do I have to choose for my CTS?
AC Delco 213-1515
AC Delco 213-1516
Best regards.
Tuesday, February 4th, 2014 AT 12:44 AM
1 Reply
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One is probably upstream and the other is probably downstream. You have to determine which you need through reading the code Bank One sensor one is upstream and a Bank One sensor two is downstream.