97 gmc sierra o2 sensor

[maddogg76]

I just recently bought a 97 gmc trurk 1500 extended cab 4x4 with 5.7. the second to last o2 is disconnected and the last one wire is cut. does some one know where these need to be connected? I have looked and not finding where these need to go. any help would be appreciated

Chris

 

[happy 2011]

so your talking about BOTH o2 sensors after the cats? one on the left and one on the right side?

 

[GMC|Mohammed]

gmc mohammed

take it for the professional
02 sensor are sensitive

 

[GMC|Mohammed]

gmc mohammed

take it to a professional
02 sensor are sensitive

 

[maddogg76]

yes both o2 sensor after the cats.