I have the same car its an SLS 2001, have been having major problems over the past 6months one problem is the same you are having. I took it to the Cadillac dealer. I had to have a tune up got new spark plugs,fuel injectors..fuel rail.. and cumbustion chamber cleaned. PLENUM Gasket was leaking had that replaced that also the intake ASSY replaced that. The only thing that didnt fix was the "shutting off" on me I took it back had to have some other things fixed for get what those were I would have to find my paper work.

Good Luck!

Answered by amydc79
0 questions asked

this is easy you need a oil level sensor they stick some times, the dieing is probally crank sensors replace both of them

Answered by Buzzsaw
3 questions asked

Yeah like he said crank sensor I looked at my paper work my front engine motor mount was broken causing 2 wires to stretch and pull apart 1 to MAF sensor and 1 to crank sensor A they had to repair the broken wires and replace the motor mount. Also the crank sensor A & B shorted out they replaced both crank sensors and reflashed PCM with updates.

Answered by amydc79
0 questions asked