my check engine light comes on for my 2001 chevrolet malibu LS. the radio, ac, fuel and oil temp gauge, cruise control and automatic headlights do no come one. however, if i give the car a hard start (i hold the key when i turn it to start the car) they work normally (the engine lght stays on though). What could it be???

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2001 Chevrolet malibu 3.1 L V6