Tahoe & SuburbanThe power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.
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I have a 2007 Tahoe LTZ. My check engine light has come on. I had the code checked and it says it's for the o2 sensor bank 1 sensor. Where is this located? Is it easy to access and something i can replace myself? Also, how many o2 sensors does my Tahoe have? And will I need to replace more than one or just this one? Any info would be greatly appreciated!!
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You have 4 sensors. Two for each bank. One pre cat and one after the cat. The code will tell you bank 1 upper or bank 1 lower. This tells you if it is the pre cat or post cat sensor. Bank one is the side that has cylinder 1 and bank 2 is the side that has cylinder 2 They are located under the truck in the exhaust pipes. If you don't access to a lift, you have to lay on your back under the truck. Some are easy to loosen and some are not.
So there is 2 bank 1's and 2 bank 2's? Will I need to replace both bank 1's? I was told that if one sensor goes bad the other will too...also, because of the faulty sensors what sort of problems could I be experiencing with my Tahoe while driving?
I think that P0053 is sensor 1 on bank 1. How many miles are on the truck? They usually go at about 100,000 miles. When the first one went on my truck at just over 100,000 miles I went ahead and changed all 4 of them.
I (my son) just replaced one of mine. Took both out and checked them with a test meter.
Held it in the vice and tickled it with a torch. Light tickle produced = about .5 milli amp, heavy produced 1.5 milli amp so that one was good. Next one never got above .2 milli amp. So it was the bad one. $50 and less than 30 minutes work. I'll do them one at a time when necessary.