hello everyone please welcome and join me in Easy Steps today I'm going to share with you Hummer
h2 the engine light came on and the code shows up p0153 which is a related to oxygen sensor and
it shows bank two sensor one basically saying the passemger side sensor is bad the Hummer
h2 requires 4 oxygen sensors, 2 upstream and 2 downstream and it's only one is bad the three are
good but I'm going to replace all 4 oxygen sensors the passenger side upstream and downstream on the
driver side upstream and downstream so I'm going to make a two parts part one will be the passenger
side this instruction will work with your Chevy GMC cadillac and other cars and the procedure is
the same it's very easy to do it and I'm going to walk you through step by step in case if you're
interested what tools I use and what parts I have used I'm going to list under the description
please check it out and let's get started so this is how the Hummer looks like and once I'm going to
insert the key and the engine light supposed to come on and it's supposed to go off after a few
seconds engine light stays on so I'm going to test with my meter/scanner so we're going to plug it in
so if we read the codes it says p0153 and it says o2 sensor circuit slow response Bank 2 - sensor
1 this is the tool we're going to use with our oxygen sensor this is a special tool the way it
worked the wiring goes inside of this and then this one get mounted on your oxygen sensor and
then we crank it open and as for tightening the torque it says to do the hand tight and
then do the 3/4 turn and this is how it looks the upstream connector and this is how it looks
downstream connector and then you need a ratchet the extension and the sockets that's all tools
you need this is oxygen sensor so I'm going to remove it so this is the passenger side and the
o2 sensor is located it's really easy you can access through the wheel you can go underneath
then you can do it you put the socket in and you crank it open so once you crack it open
then you remove the o2 sensor and now we're going to remove the wiring there is a clip which holding
the wire to open it you lift it up or pry with the screwdriver or you can do this you turn around
sideways it will open up now we can take the wiring out for the second option you just cut it
open and put a new clip and here is the connector so this is the old one and this is the new one
so we're going to take it out make sure don't touch it and now we're going to take this one
we're going to insert it in once insert it in then we're going to turn it clockwise so once
so we inserted the o2 sensor then we going to do the hand tight you don't have to force it
once it's the hand tight this is how it's gonna look so once we going to insert the
socket we're going to do the 3/4 turn I don't have a torque specification number for your
car as the instructions say you insert the socket you do the 3/4 turn after doing the
hand tight just like this then we're going to do the 3/4 turn so now we're going to plug in
the connector we're going to put that clip inside to make it secure so this is the new
sensor we installed it upstream the wiring of upstream sensor comes here and then a lock it
and this is the clip so that keeps in place and that's the downstream one is in front of
the catalytic converter and the other one is a back of the catalytic converter we're going to
change both of these so I'm going to change my back stream the same way so o2 sensor wiring
we're going to place it inside the clip and we're going to lock it so this way it will be secure so
well done so that's how it's easy and simple to change our oxygen sensor upstream and downstream
on Hummer h2 and I hope this video going to help you out if it does help your please like
this video and share and please don't forget to watch part 2 on driver side since I'm replacing
the other sensors as well thank you for watching I'm going to see you soon with the new videos bye