can you should me were on the car are the oxgyen senors all 4 I don't know where on 2004 Cadillac DeVille

can I get a picture of where they are

by in Elizabethtown, KY on September 30, 2012
2 answers 6 comments
ANSWER by , September 30, 2012
why are you replacing them?? the chances of all 4 failing at the same time is like you getting hit by lightning in your living room. what is the issue?? Roy
COMMENT by , September 30, 2012
or could it be the mass air flow senor
COMMENT by , September 30, 2012
ok, same question, what is the issue??? Roy
COMMENT by , September 30, 2012
service engine soon light stays on
COMMENT by , September 30, 2012
what is the code?? Roy
COMMENT by , October 01, 2012
po171 and po174
COMMENT by , October 01, 2012
Those codes tell you the sensors are working . diagnose the CAUSE before replacing parts .
ANSWER by , September 30, 2012
if the service engine light is on have it scan tested for codes