Z07

IMO if you have the new O2 sensor in hand and the old one is seemingly welded in place, then don't screw around with the O2 sensor installation tool. Get the area clear of extraneous things like the cosmetic engine cover. Run the engine until the cooling fans kick on and shut down the engine. Immediately cut the failed O2 sensor off short enough that your regular 22mm or 7/8" SIX point socket fits snugly and have at it with your impact wrench.

Do use the specialty tool on install and don't get any of the supplied thread goo on the sensor itself.

kitson

hey guys recently i replace my timing belt and water pump after i keep getting a code of p1155 ,p1135 p1346 i went back and rip it apart a second time.to my surprise i am still getting the same codes and i have oil leak between both heads which seem to be head gasket leak now i am try to pull the head down need some suggestion