Could someone please state the location of a oxygen sensor on my 1996
chevy pickup.It was scanned and it came up as : sensor one, bank
one....It is a 4.3 litre, vin code "W"...I have traced the drivers
side- and I did find the one in the exhast
just before it turns toward the passenger side to connect into the
but there is a sensor,it seems a bit larger, in the drivers side
manifold just before it connects into the exhast by the firewall????
What would that be??