Thanks for the feedback Mike.
So did you ever go ahead and replace the LIM Gasket, or are you waiting to see if you start loosing coolant?

I really want to stick with Dex because I worry I won't get all of the Dex out of the system, but I suppose most of it will be gone after 4-5 flushes, which is what I expect to have to do.
I already got my Zerex Dex in the mail today, good ole Amazon Prime.
I figured I'd go with Zerex Dex because I can find it pretty easily, and I was hoping it would have a slightly better formulation being a newer Dex compatible coolant.


As for how this got cruddy, I seen there was very little coolant in the coolant res, and the rad was a little low, so either the res was let get too low due to neglect, and eventually air got sucked in.
Or the LIM caused coolant to be lost quickly, and that let the air get into the system.

Once I get it changed I'll hook my scan tool to it and watch temps carefully for a while.
At least I am sure I'll easily get the air out with that Lisle Funnel.

William,

Yes I replaced the LIM and UIM gaskets right after I brought the SLE home and saw leaking coolant. When I was doing the jon is when I discovered a coolant elbow issue. I wondered if maybe the issue was only the elbow and not the gaskets- but I learned a lot and glad it is all done. There was plenty of thick coolant residue goo around the intake manifold so I will take changing the gaskets as multiple positive effects.

The new universal coolant is compatible with DEX- so no issue if they live together.

I'd feel better if I replaced the LIM Gasket, I just am not fond of the idea of going through that process again, and in a much tighter engine bay.
And I am afraid of the crud I am going to find in the coolant ports.
I have not found any noticeable coolant leaks myself, not yet anyway.
I do plan to eventually replace the coolant elbow with the aluminum ones.

Deep down I know changing the LIM Gasket is the best route to take, I just have a problem accepting that, as the more I spend, the more I am eating into what little I have left, and I was trying to save enough for a tranny rebuild, as at 143k I am sure it is just a matter of time.
Then again what good is a rebuilt tranny if the motor kicks the bucket...

If I do the job, I won't have to drain the oil out of the Supercharger will I?
I can if I have to, but I just replaced it, and it cost me 20.00

Found the SC gasket set like half price on RockAuto, they only had two left so I grabbed one.
24.00 total shipped, better than 40.00 from Amazon.
I looked over an old vid I watched back when I did my PA, and it is a decent video to help a newbie to the job.
http://www.cpaclubgp.com/misc/lim-gasket.html

Now that I have done it once I am sure things would go faster, I may be able to get it done in one day if I start early in the morning..
I'll most likely flush it a few times, then drain, before I start the LIM Gasket job.

I may go ahead and do the LIM Gasket, but I think I'll wait on replacing the radiator, at least till I see if the one on there will come clean enough.
I am tempted to go ahead and replace the water pump, but I'll wait till it needs to be replaced.
I'll have the stuff I need to do the flush by Monday or Tuesday, just have to decided if I am going to commit to this LIM Gasket change, I know it is the right thing to do, just not looking forward to having to remove the whole top end...

Ya it is a long day to get the LIM done. Prep work for the gaskets is fun too.
The bonus is you get to have a good look in there.
Good luck on the project William, got any ride pics yet?

I'll have to get the torque specs for the SC and LIM, also the thermostat housing bolts, all of the others I can hand tighten without any issues.
I'll go over my FSM when it arrives, or check my thread on 3800Pro where I did the UIM/LIM, that or I'll just check the torque specs page there..

I posted the link to the pics in the other thread.
2006 Pontiac Grand Prix GT - Album on Imgur

I'll post one, you'll have to check the link for the others.
I'll get engine pics after I am done working on it.

Checked oil level today, and it is funny, one side shows perfect oil level, back side showed like 2 quarts too much every time.

Checked trans fluid, and it looks to be one quart too much, go figure.
I also noticed a squeak in either my alternator pulley, or my tensioner pulley.
And I noticed I have drive by wire, and no throttle linkage cables, that should not be an issue though.
I noticed what looked like 2 MAP sensors on the back, one on the driver side connects to a EVAP hose, the left side one connects to nothing, I am guessing that is they way it is supposed to be..

There is not much difference in doing the LIM job on an L32 vs a L67 is it?
Just the drive by wire, and from what I can see on the rear near the valve cover it looks like 2 MAP sensors, both have the same part numbers on them, but as mentioned only one is hooked to the EVAP system.

I tried to find a video or something on somebody replacing LIM Gaskets on a L32, but found nothing, guess for anything I am unsure of I'll have to look it up in my FSM'*..

I am thinking about replacing the water pump while I am at it, as it would be less work to do it now, then do it not too far down the road, I am sure the corrosion has gotten to it a bit.
Only another 100.00 tossed into it, yay

I still need to figure out what pulley is squealing, it is either the alternator, or tensioner, pretty positive it is one of the two.