Anyone Know How Much $$ for a New Computer? - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 13 (permalink) Old 02-20-2011, 05:56 AM Thread Starter
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Anyone Know How Much $$ for a New Computer?

After some pretty major issues with my car (stalling out, shaking, over the course of about 4 months) my mechanic thinks that my computer is going to crap. (Link to my previous post on this issue, which includes another link: https://www.yourcobalt.com/forums/pro...fixed-but.html )

Anyone know the cost of a new computer? (06 Balt LT 2.2) I'm going to drive the car around for a while (only put 12-15 miles on it a day) while I save the money for a new puter, but just curious how much I'm looking at. Thanks!!

*I'm looking for just the price of the part. My hubby and I can figure out the labor part of it. Thanks!
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post #2 of 13 (permalink) Old 02-20-2011, 05:28 PM
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One from a salvage vehicle should be rather cheap. If you go junkyard hunting, you should be able to find one. You do have to make sure the pcms match since there were some differences between certain years.

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post #3 of 13 (permalink) Old 02-21-2011, 01:46 PM Thread Starter
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Originally Posted by Nighthawk243 View Post
One from a salvage vehicle should be rather cheap. If you go junkyard hunting, you should be able to find one. You do have to make sure the pcms match since there were some differences between certain years.

...

Yeah, I'm not all about junkyards... I've gotten window regulators and stuff out of them before that just went to junk again a few months later. Now if it were a quarter panel or something (and assuming that my hubby weren't a body guy that can get new aftermarket body parts cheaper than what he can in a junk yard), then yeah, but with electronics, I'm just not quite thrilled about the idea. Plus with my luck I'd be putting a computer in my 63xxx mile car that came out of a 120xxx mile car. :-)

And when I said window regulators and stuff, I mean for past vehicles...

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post #4 of 13 (permalink) Old 02-21-2011, 05:57 PM
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Originally Posted by teri2280 View Post
Yeah, I'm not all about junkyards... I've gotten window regulators and stuff out of them before that just went to junk again a few months later. Now if it were a quarter panel or something (and assuming that my hubby weren't a body guy that can get new aftermarket body parts cheaper than what he can in a junk yard), then yeah, but with electronics, I'm just not quite thrilled about the idea. Plus with my luck I'd be putting a computer in my 63xxx mile car that came out of a 120xxx mile car. :-)

And when I said window regulators and stuff, I mean for past vehicles...
As far as window regulators go, you should always buy new ones (usually aftermarket)... especially with GM vehicles since the OEM ones tend to burn out quickly.

The PCM is usually always never an issue from junkers, provided that they were not damaged in the impact. If you're going for engine components, try to find the cars that either were junked due to body issues, or totaled due to a rear-end hit. The PCMs are rather well sealed against the weather, so they don't sustain the issues from being out in the elements, since the engine bay is a harsh environment to begin with. As far as mileage, the yard usually keeps records on the vehicles, so just ask them to look it up. Alternatively, if you use eBay to buy from an auto recycler (Such as LKQ), they'll provide the information about the car it was pulled from. Recycled auto parts are a pretty good way to get parts for cheap if you know what to look for.


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post #5 of 13 (permalink) Old 02-21-2011, 06:03 PM Thread Starter
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What about the ECM? We're not 100% sure which one needs replaced since it hasn't been into the shop yet, but the hubby is "thinking" it's the ecm one.....? (Like where to look for it.)
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post #6 of 13 (permalink) Old 02-21-2011, 06:26 PM
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Originally Posted by teri2280 View Post
What about the ECM? We're not 100% sure which one needs replaced since it hasn't been into the shop yet, but the hubby is "thinking" it's the ecm one.....? (Like where to look for it.)
When I say PCM, basically I'm talking about the ECM. Just a bad habit from my Grand Am days.

The Cobalt has two main computers for the powertrain, the Engine Control Module (ECM) and the Transmission Control Module if you have an automatic trans (TCM).

The ECM on the Cobalt is directly in front of the fuse box in the engine compartment. There is a little cover over it that you can pull off, which will expose the ECM. The 2006 should be the 16bit version, with two connectors on it. The 2007+ will have 3 connectors and is 32 bit, making it incompatable with the 2005/2006 cars.

When you change the ECM on the Cobalt, you will need to have the dealership perform a CASE learn.


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post #7 of 13 (permalink) Old 02-22-2011, 01:36 PM Thread Starter
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Originally Posted by Nighthawk243 View Post
When I say PCM, basically I'm talking about the ECM. Just a bad habit from my Grand Am days.

The Cobalt has two main computers for the powertrain, the Engine Control Module (ECM) and the Transmission Control Module if you have an automatic trans (TCM).

The ECM on the Cobalt is directly in front of the fuse box in the engine compartment. There is a little cover over it that you can pull off, which will expose the ECM. The 2006 should be the 16bit version, with two connectors on it. The 2007+ will have 3 connectors and is 32 bit, making it incompatable with the 2005/2006 cars.

When you change the ECM on the Cobalt, you will need to have the dealership perform a CASE learn.

Ok. Gotcha. No problem. I knew there were 2 computers in there, one the ECM, and another "something" CM. LOL. Was very tired last night and a lil confused. LOL. Thanks!!
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post #8 of 13 (permalink) Old 03-03-2011, 09:59 AM Thread Starter
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Update:

Turned out not to be the ECM after all! Just a bad coil pack. My car FINALLY threw a code, and she's in the shop as I type. Turns out the new throttle body did actually do what it needed, but apparently the throttle body and coil pack just both needed replaced.
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post #9 of 13 (permalink) Old 06-14-2011, 11:55 AM
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this note is for anyone thinking of replacing one of the computers in their cobalt.
these computers (all 3 of them) have an 8 year warranty on them,its an emissions regulation.so if you're sure you need one get it done under warranty!!!
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post #10 of 13 (permalink) Old 06-15-2011, 03:39 PM
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Are you sure about this warranty thing? I've seen many posts on this site and on Edmunds. Everyone seems to be paying for new modules and complaining. Is this some sort of GM secret?
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