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2010 Buick LaCrosse reduced engine power light

2010 BUICK LACROSSE reduced engine power is on and wont go pass 20 miles a hour

This is the car going into limp mode. There is something that needs immediate attention. Could be something as simple as a dirty air filter, but also something more serious. Limp mode is designed to allow you to travel a short distance to your destination. It should not be driven in this condition. If you can pull the codes from the vehicle, someone here will be able to advise you of the right thing to do. If you can’t pull the codes it needs to be looked at by a qualified mechanic.