started my 07 up this morning to a check engine light
forgot the codes but it was for bank 1 02 heated sensor when I pulled code

anyway truck just turned 100,000 miles, so gonna change them all,
should be 4 of them? 2 heated 2 not? anyway maybe doesnt matter
but own a 97 tahoe that hated AC delco O2 sensors, was years ago but changed several
every couple of years until I put Bosch ones in, still own truck and havnt replaced them in over
10 years. anyone have bad or good luck with a particular brand?

 

The newer vehicles are more sensitive to using AC Delco or genuine GM sensors. You have two upstream and two downstream sensors. Compared to many vehicles I've had, the ones on the H2 are fairly easy to get to. If you pick up an O2 sensor socket kit, makes it super easy. Includes a thread chaser also to clean those threads. Very affordable at $20.

 

I usually look up the part number on RockAuto, then search Amazon for it. ACDelco has a presence on Amazon, and a lot of their items are not listed per vehicle. It also gives you a chance to compare the price from RockAuto which is usually hard to beat, but comes with shipping, compared to Amazon if you have prime membership with free shipping.

 

Be careful there is a lot of fake “AcDelco” branded parts on amazon. They look nearly identical to the real ones even though they are not.

 

You just want to make sure you're purchasing from the AC Delco store there. (They do maintain an official presence)

But you do always want to confirm the seller, which is on the upper left of each product page. There are other people selling Auto parts on Amazon and who knows the source of what they're selling. Most major companies do have an official presence there, such as Melling, Summit Racing, etc.

 

Here's an example of what I bought from them last week, note the official hologram as well




Not only is it a lot cheaper than at the parts counter at the dealership, a friend of mine that works there tells me they often source parts cheaper there than through official channels with GM.... And the part arrives faster

 

So should I get AC Delco? Again reason for my post was an older truck did not like ac delco but liked Bosch. For all I know I was buying fake gym stuff years ago
probably was eBay stuff back then. Bosch was bought locally when I gave up on acdelco.

 

if i remember i think the number 1 O2 sensors where origionaly Delphi even though they came in AC delco box.

 

I always stick to AC Delco for genuine GM if available. Delphi is usually my next choice. RockAuto has both.

 

yeah i belive my acdelcos actually where delphi. so i guess gm sources them and then repackages the delphi's