I went and looked at my vin this morning just because i wanted to search it... so this is what i got CKL148Z144871.. looks like a normal vin to me. ive checked this and double checked this. then had my wife go look at it. now i dont know where the hell this "Z" comes from Ive googled it and still no answer.. here is what i am compairing it to... and it gives no reference to the " Z" .. i got this VIN from my door sil is it different there???