Bank 1, Bank 2, whats what?

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Bank 1, Bank 2, whats what? - 4/19/2008 5:44:24 PM    TylerWalker   Posts: 11 Joined: 4/18/2008 Status: offline So its looks like i'm going to be replacing one of my cats. my ses light says my bank 2 o2 sensors reading too lean and my bank 2 cat isnt ruunning effciently. i'm assuming this is the bad cat. (i think thats a pretty safe assumtion) so what side is bank 2? Thanks!! Post #: 1

RE: Bank 1, Bank 2, whats what? - 4/19/2008 7:20:46 PM    ehhget Posts: 350 Joined: 1/22/2008 Status: offline Not sure but I would try replacing the O2 on your cat first and see what happens. _____________________________ 01 Silverado 5.3L 4X4 01 Camaro SS LS1 SLP 70 Nova SS 350 (in reply to TylerWalker) Post #: 2

RE: Bank 1, Bank 2, whats what? - 4/19/2008 8:22:18 PM    RonH   Posts: 415 Joined: 1/31/2007 Status: offline 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. (in reply to ehhget) Post #: 3

RE: Bank 1, Bank 2, whats what? - 4/19/2008 8:52:38 PM    shawnvw   Posts: 826 Joined: 1/18/2008 Status: offline As ehhget said, a bad O2 can fool the computer into thikning the cat is bad, try the sensor first then do that cat if the problem persists (in reply to RonH) Post #: 4

RE: Bank 1, Bank 2, whats what? - 4/20/2008 7:15:23 AM    RonH   Posts: 415 Joined: 1/31/2007 Status: offline Don't just throw parts at it.  Parts like cats and O2 sensors are 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. (in reply to shawnvw) Post #: 5

RE: Bank 1, Bank 2, whats what? - 4/20/2008 9:01:10 PM    ehhget Posts: 350 Joined: 1/22/2008 Status: offline Yeah like Ron said probably best to have it diagnosed first instead of doing a crap shoot will save some cash and frustration in the long run. _____________________________ 01 Silverado 5.3L 4X4 01 Camaro SS LS1 SLP 70 Nova SS 350 (in reply to RonH) Post #: 6

RE: Bank 1, Bank 2, whats what? - 4/21/2008 5:41:00 AM    TylerWalker   Posts: 11 Joined: 4/18/2008 Status: offline 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?? (in reply to ehhget) Post #: 7

RE: Bank 1, Bank 2, whats what? - 4/21/2008 12:05:02 PM    jmack91z28   Posts: 162 Joined: 2/27/2008 Status: offline That buzzing noise could possibly be coming from the muffler too, or are you positive it is the cat? _____________________________ 1994 K2500 454 4L80E 14bolt 10.5" w/ 4.10's (in reply to TylerWalker) Post #: 8

RE: Bank 1, Bank 2, whats what? - 4/21/2008 1:23:25 PM    shawnvw   Posts: 826 Joined: 1/18/2008 Status: offline Give the cat a smack with your fist, if it rattles then the insides are shot (in reply to jmack91z28) Post #: 9

RE: Bank 1, Bank 2, whats what? - 4/21/2008 9:02:08 PM    ehhget Posts: 350 Joined: 1/22/2008 Status: offline Be careful with the smack test on the cat though.  I did that once and thought it was bad only to learn it was a bunch of tiny rocks vibrating on the heat shield. _____________________________ 01 Silverado 5.3L 4X4 01 Camaro SS LS1 SLP 70 Nova SS 350 (in reply to shawnvw) Post #: 10

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