Asked by Aug 11, 2018 at 01:15 PM about the 2004 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

2004 cadillac starts and when I try to put in gear, engine dies.  Happens over
and over.  Is my gas cap bad?  Keeping getting same error code about check
gas cap.

3 Answers


A gas cap won’t cause what your getting, this sounds like a locked up torque converter or the TCM has the lockup solenoid energized all the time. Either way it’s a big job at a tranny shop.

I ran self diagnostic and no codes about this on 2004 Cadillac DeVille. Shouldn’t it show a code to help with resolving? If no codes, what am I to do next?


A locked up torque converter will not show a trouble code.

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