Bank 1, Bank 2, whats what?

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Sep 23, 2019 | 6:42 PM

#11

John Town

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Joined: Oct 2018

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Would a bank 2 sensor 1 cause p0200 p0300 together.

Quote:

Originally Posted by RonH

Bank one is the driver's side. Bank 2 is the passenger's side. Sensor one in each bank is before the cat. Sensor two is behind it.

.my scanner gives real tie reading and 3 seem similar and one has a line like erratic heartbeat does that indicate bad o2

Apr 17, 2021 | 10:15 PM

#12

ChevyLifer

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Joined: Apr 2021

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Quote:

Originally Posted by RonH

Don't just throw parts at it.Parts like cats and O2 sensorsare expensive. A dealer (or other mechanic) with a scantool can check your O2 sensors to accurately diagnose the problem.

If you do need to buy cats, you can find them on eBay for about $52 each with free shipping.

I found the cats for my Traverse for 225.00 for all three. The dealership I took it to did confirm the cat bank 2 was bad. So I figure, instead of getting one for 150.00, I could save a ton of cash and get all three for 225.00 from Rockauto. I have a FIXD device also and it gave the same result as the dealership did when I ran the scan using the app on my phone. I am also replacing the plugs and intake gasket all at the same time. Thins will save me close to 1200.00 had I gotten all the parts from the dealership instead of online.

Aug 14, 2022 | 12:22 PM

#13

Nunnya

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Joined: Aug 2022

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You might wanna check first

Quote:

Originally Posted by TylerWalker

thanks for the good info all. i believe that my cat is bad because of the loud buzzing noise coming from my exhaust when i'm on the gas. it sounds like a baffold broke lose and is buzzing back and forth or somthing. is that possible??

You may want to look for broken exhaust manifold bolts. Chevy has a real problem with this.