I have a 1995 Bonneville SE , I hooked it up to a code reader and said that "NO LINK". I got another computer and it still has same problem. The car also will not hold a charge and the security light comes on and disables starter every now and then. Any suggestions? I have also replaced the battery, starter, and alternator. Sometimes it will start and run great other times when it starts will run rough for couple of min and then straighten out. I have not been able to depend on the car to drive for a couple of months.
I took it to a garage and they charged me for hooking it up to their fancy computer and told me they couldn't get a reading from the ECM , but wouldn't give me any direction as to why!