ZeRoSe7en

Hey guys, my cars having trouble reading my transpoder chip (key), the cars cranks fine but wont fully turn on. Im possitive it has to do with the oem immobolizer. I only have one master key and its getting more difficult to turn on. Could the transponder amp be going bad? Is there a way to bypass the stock immobolizer, like the idatalink bypass unit? The car does have an aftermarket alarm that was never programed so im not sure if its interfearing, any suggestiins would help, thanks guys