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Rogeled 04-29-2008, 04:32 PM I just bought a 2003 GMC 2500HD and it has no Cat, only a rather large muffler. I thought all CA duramax engines had Cats on them after 02. I do not think the PO took it off, so what is up? mpriceduramax 04-29-2008, 07:37 PM it probably came from out of state. my 03 didn't come with a cat either okierzr 04-29-2008, 08:08 PM Mine didnt have a cat either. Rogeled 04-29-2008, 09:22 PM Nope, it was first sold in CA. I bought it from original owner/family. jeep poor 04-30-2008, 12:10 AM Ours did not come with a cat. But it was assembled in Flint Michigan. Or so the tag on the door says.:D RFDEV 04-30-2008, 05:55 AM Check to see if it has EGR .. if not then it's not a CA emissions version Big Red Wolf 04-30-2008, 09:50 AM I have an 04 with no kitty. It sounds like for some reason your truck is not a California version. It could have been sent to Cali by mistake or got mislabeled as a Cali version. Be happy....not having a cat is a good thing. chevy_dmax 04-30-2008, 11:12 AM Mine has no kitty... Wesley Dueck 04-30-2008, 01:32 PM My '04 had no kitty. fastorange 04-30-2008, 01:46 PM I bet hes gota go trew some kinda E check. I bet they will give him hell for not having one. MontanaDirtymax 04-30-2008, 06:39 PM no kitty on mine. Built in Flint MI madmaxdmax 05-01-2008, 08:10 PM NO KITTY HERE EITHER , 2003 ....a big thanks to GM :D Rogeled 05-02-2008, 10:19 PM No I do not have to go through a E check, just registered today. I took off the Cat on my last truck. Actually would have bought a Duramax sooner if I knew it did not have a Cat. Those things are a joke on a diesel. It does have an EGR though. can't figure that one out unless PO took off the CAT. I am glad I do not have to bother to take it off:) Rogeled 06-06-2008, 10:50 PM Did a vin check and it came with a kitty. Guess it just fell off or something:) No worries here. Now, how about the EGR? Sure do not need that, blocker plate seems appropiate but do not want to throw codes. | ||