VEHICLE 2009 BUICK ENCLAVE. KEEPS TURNING ON THE LIGHT ENGINE AND AT THE DEALERSHIP THEY KEEP TELLING ME THAT IS BECAUSE I DON'T CLOSE THE GAS KNOB CORRECTLY. WHEN THE ENGINE LIGHT TURNS ON WHILE IM DRIVING IT GIVES ME A MESSAGE OF POWER ENGINE REDUCE AND IT REDUCE MY SPEED AND I CAN'T CONTINUE DRIVING. I'VE ALMOST CAUSE 2 ACCIDENTS WHILE IM DRIVING DUE TO THIS ISSUE. IT WILL COMPLETELY STOP IN CERTAIN TIMES WHILE IM DRIVING. LAST INCIDENT 06/05/10. AS WELL, MY TIRE GOT FLAT AROUND A MONTH AGO AND I REALIZED THE DEALERSHIP SOLD ME THE VEHICLE WITH NO EXTRA TIRE AND EMERGENCY EQUIPMENT TO CHANGE MY TIRE. *TR