Q: Why will my car not go over 20 mph and it has a lot of warning lights on. 2009 Pontiac Torrent

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My dashboard, keep rotating messages; reduced engine power, service traction control, service stabilitrak. My car also does not drive beyond 20 mi/hour. Please help, what are the possible causes ?

My car has 153000 miles.
My car has an automatic transmission.

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