Does a ignition control module need to be programmed on a 2005 chevy impala?

No it doesnt need to be programmed at all. Why are you replacing the module anyway??? Just curious about that, not condemning your mechanic. My other problem is you found a part ONLINE for $50.00. You know, I really love you DO IT YOURSELF people when you find the CHEAPEST part you can find & slap it on your car & then scratch your head when the problem doesnt fix anything or it comes back next week or month!!!!! Sorry, not bashing you or trying to be mean but it is just I work at a dealership & I see what aftermarket parts do!!!!! I have ran into lots of problems by using aftermarket parts as well due to the fact the GM part has been discontinued & the aftermarket part will not work whatsoever due to the internal circuit boards issues like on the 1994 Deville with the Cruise Control Servos, the ones from O'Riellys will not work regardless of how many you replace it with. But it is funny that the $400.00 one from GM worked perfectly fine!!!!

If you are going to do it yourself, I suggest you go to your local Chevrolet dealership & at least buy the GM part for you car. You should never buy aftermarket electrical parts for you car EVER!!!!!!

I know your sitting there wondering that I dont know what I'm talking about & why would someone make this part if it didnt work. There is a reason why it is a lot cheaper than the GM part, it is made as cheaply as it can meaning----cheap materials & short cuts taken to make it as cheap as possible. They do not care if it fails within a month, how are you going to get the warrnaty out of it??? Means you buy another one. Who cares, they're cheap

No they arent hard to change, write down on a paper the layout of the coils & which number is where. If you have no numbers on your spark plugs & someone has already replaced all the coil paks so there are no numbers there either, get your self a sharpie Thick pen. Just write 1-6 starting at the top on the plug wires & on the coil beside it just in case one rubs off & when you put it back together, just match the numbers

I don't think so. I think what he's talking about is that there are a ton of PCM software updates on this vehicle and to do the job correctly, he's probably thinking about updating.

Also, the ICM doesn't bite the dust on it's own. It usually caused by a short in an ignition coil, bad spark plug wire, or bad spark plug. Any time you sent 40,000 volts down the line and get a misfire, the backfeed is enough to take out the module. If you don't find out what caused it to fail, you'll be replacing it again.

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Hehehee... Get a second opinion. I think what he ment was that he has to clear any trouble codes that the car computer may have set, (check engine) light, which you can do too,easy. I also think that if u like to do this stuffs to save u bukoo bucks, is to invest on a live data scanner ... also can be used to clear trouble codes.