ATS turned off when reversing

Hello,

Okay guys this is the second time this has happened. Morning time today on the way to work I warmed the car up for 10 minutes and

When I put on reverse, it did a stalling type shake and turned off. My cars an automatic. I got to drive off there after but any idea what happened? Why?

Please help

Thanks



I didn't find the right solution from the Internet





References:

www.cadillacforums.com/forums/cadillac-ats-general-discussion

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