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Tx Car Buff
Seems like there are 2 unrelated issues here. The fast blinking turn signal light usually means one of the lights on that side of the vehicle is burned out or is not making contact. If the bulb is burned out, simply replace it. If it is a contact issue it is best to replace the light assembly rather than to try to fix it. The car dying issue could be due to any number of issues but it's highly unlikely the turn signal issue is one of them. You'll need to have service facility diagnose the problem. I had a similar problem 2X and in both cases a re-flash of the main board fixed it. The cost for that was $90 each time (outrageous) at the dealer but the dealer is the only place that can do that.
There's a recall for this issue. Contact a Chev dealer to get it fixed.
The bulbs probably need to be replaced. The bulbs are inexpensive but the labor is not since the dashboard needs to be pulled off to get to the bulbs.
This is a problem common to many 2004-2007 Chev Malibu's but Chev/GM refuses to fix or even acknowledge it. After replacing the headlight assemblies 3 times for this issue (go with Tyco after-market, not Chev...much better price and they fit and look just as good) I finally gave up and put in LED lights. It was a little trial and error on that since I found out that most of the LED lights for these turn signals are not bright enough and don't hold up well to the power when operating in the DRL mode but finally found the 3157-x18-T-CAR from superbrightleds.com ($19 each) that have worked well for 3-1/2 years now with no burning/melting of the amber globe. They are not quite as bright as the spec'd incandescent bulb but do a good enough job. Note: 1) Contact superbrightleds.com to see if this is still their best offering for this dual function (turn signal and DRL) application and 2) you will need to purchase and install a resistor kit to keep them from blinking too fast. The LED lights are simple drop in replacements for the incandescent bulbs but the resistors will take a little more time (took me about 20 min.) to add on.