2006 Chevy Impala, engine light is blinking and seems like no gas is getting to the engine and stalls when I'm not stepping on the gas

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Check the vacuum hoses for a leak.

2006 Chevy Impala LS 3.5L Surge Under Load - YouTube

? 3:09
www.youtube.com/watch?v=sD-swFhMORM
Jan 22, 2013 - Uploaded by Gary Castle, Jr
Surge while driving. ... 2006 Chevy Impala LS 3.5L Surge Under Load ... How To Fix Or Prevent Stalling, Surging Or Rough Idle, Cleaning ...

You can read all about your code here:
http://www.obd-codes.com/p0011

Most likely a P0011 DTC will result in one of the following: hard starting, poor idle, and/or stalling. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.

Hi Eric: You can drive to AutoZone, unless you are in CA, and they will scan for any trouble codes that may be associated with the illuminated check engine light.

any time the check engine light is flashing the engine is miss firing, most likly cause is spark plug wires or colis, but also check the wiring harness from the crankshaft sensor to the ignation module they have a bad problem with coming out of the wiring lume and geting melted on the rear exhust manafold...good luck

Take it in, a blinking check engine light is not a good sign. Solid yellow is ok, blinking yellow or red is in need of service. Get the codes checked asap.

have the car scanned for trouble codes. Many parts stores, such as autozone and advance will do free scan.

Assuming you mean the gas cap being replaced, this can also be the result of a vacuum leak. Look around on the engine and see if there are any vacuum hoses related to the fuel system. If your engine has a plastic cover it is under that. Remove the cover. Most are held down by the oil fill tube which generally unscrews, sometimes reverse threaded.

there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.

There is no sensor for a loose gas cap. What is happening is that the evaporative emission system is sensing a "Large Leak". Usually code p0455. The computer sees this as the most probable cause is a loose gas cap depending on several factors it looks at. You would need to clear the code(s) and see if that was the problem. If the light comes back on, then you have a problem in the system that will not let it seal. Possible solenoid problem, leaking hose / line, etc.