[bigbrett]

2003 tahoe 5.3
scanner showed 02 sensor in right side exhaust
changed it still getting code
preheat something or other in that sensor

must be a loose connection

anybody have the wiring diagram or have had similar

 

[MrShorty]

I've used the wiring diagrams in Chiltons and/or Haynes, and found them adequate for O2 sensor circuitry.

What specific code are you getting?

 

[bigbrett]

I knew I should have written it down:grrrrrr: