LT1 O2 Oxygen Sensors Remove & Install 1994 1995 Impala Caprice Roadmaster Fleetwood Camaro Firebird

Wrench size 7/8 or 22mm. I used a 7/8 bc it was the first one I grabbed and it worked. Use whatever fits best or works for you. If you strip it you might have to use vice grips etc. I believe the socket tool I have is a 7/8 and it didnt quite work, it is possible I needed a 22mm for that etc or maybe either of them would have been giving me problems. Probably similar for Corvette Camaro and Firebird but probably slightly different o2 sensor location etc . Same o2 sensors. 1996 cars have obd2 and more sensors. 96 impala and caprice has 4 sensors.