2003 Cadillac CTS oxygen sensors

2003 CADILLAC CTS
140,000 MILES • 3.2L • V6 • 2WD • AUTOMATIC
Avatar
RANYRIZK
  • MEMBER
  • 39 POSTS
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.
Feb 4, 2014 at 12:44 AM
Advertisement
Avatar
KNOWLEDGE IS POWER
  • EXPERT
  • 1,136 POSTS
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.
Feb 4, 2014 at 5:38 AM