Jump starting is one of the unwise things to do with a fully computerised vehicle due to the danger of causing a damaging voltage surge. These days jumper cables are available fitted with an anti-surge device to reduce but not eliminate the chance of such a thing happening.
That your engine is cranking but not starting might be coincidence or the electronics might have been damaged. Only systematic checking will be able to determine what is wrong, I suggest the immobiliser is first on the list.
SOURCE: I have 1999 Cadillac STS.
You may have burnt starter solenoid contacts, do you hear a click when you try to start engine? If so the problem is the starter.
SOURCE: auto theft system
never seen a deville so cant help,but it sounds like a relay is not being controled by the ECU and to locate this fault need special software and again to reset vehicle .sorry i couldnt tell you more know the fault but without dealer software ??i could only rewire to make it work
SOURCE: 1995 cadillac eldorado revs up by it self
CSP, It sounds like you have a vacuum leak that is causing the IAC ( idle air control ) motor to move in and out trying to control the idle. Check all vacuum hoses on the engine for disconnect, cracked or damaged. If the hoses crack when you bend them, they need to be replaced.
Let me know what you find and we can go from there.
Regards,
SOURCE: 2005 Caddy V8 sts no longer remote cranks. lights
I had the same problem with my STS. Go back through your programing menu and "check" remote start again. Somehow, mine defaulted to not allowing remote start feature. It was good to go as soon as I re-programmed it.
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