2005 Pontiac Sunfire help

I have a 2005 pontiac Sunfire 2.2l engine. My question is my gauges go to zero sometime get stuck in one spot like the rpm gauge will go to zero and stay there until I shut the car off same with the fuel an heat guages. the speed guage sometimes get stuck like at 70 or 50 or sometime at 0. while this is happen the dash lights come on and stay on and when a press down on the beak the blinkers light up. Now just recently the car want to stall out on me. Could this be the computer for the car?