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PostPosted: Sat Feb 07, 2009 11:38 am 
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Joined: Thu May 22, 2008 1:28 am
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Location: Rockford, Michigan
Year and Trim: 2000 SE, 2008 Trek 3700
Well the DIC in my moms aurora keeps telling her the coolant level is low. First we thought it was losing coolant somewhere, but that does not seem to be the case.

After a small scare about Intake manifold gaskets (it has a composite UIM as well and I got worried) we figure it is just the coolant level sensor.

I have heard that its actually part of the resevoir tank and the whole thing needs to be replaced. Is that true?

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PostPosted: Sat Feb 07, 2009 1:03 pm 
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Joined: Mon May 19, 2008 6:04 pm
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
Had the same issue with my GXP when I bought it. I ended up filling the tank with about 1/2" more of coolant, and the light hasn't came on since.

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
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PostPosted: Sat Feb 07, 2009 1:43 pm 
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Joined: Sat May 31, 2008 2:05 pm
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Location: Kalamazoo, MI
Year and Trim: 2011Taurus SHO
I have been having the same problem on cold days. The first time I start my car for the day the low coolant light is on but that is the only time. I have checked it and it's just barley below where it should be.

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PostPosted: Sat Feb 07, 2009 3:58 pm 
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Joined: Thu May 22, 2008 1:28 am
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Location: Rockford, Michigan
Year and Trim: 2000 SE, 2008 Trek 3700
Yeah, thats exactly the problem.


Sorry about posting in the wrong section, it was a guess.

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PostPosted: Mon Feb 09, 2009 9:30 pm 
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Year and Trim: 05
The coolant sensor is a cranky buggy one. I have been seeing alot of newer NorthStar engines now having the coolant crossover gaskets fail. In most cases you see little or no coolant under the car. It first appears as a noticeable antifreeze smell and very gradual coolant loss.


Last edited by GXP Venom on Mon Feb 09, 2009 9:31 pm, edited 1 time in total.

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PostPosted: Thu Feb 19, 2009 10:07 am 
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Joined: Wed Jul 02, 2008 9:54 pm
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Year and Trim: 2006 Toyota Highlander
2004 GXP
RIP Bonnie
Venom,
Is this a similar problem as in the 3800s? I have been noticing a slight coolant smell and watching for leaks (none yet) and no coolant drop. I assumed this was because the overflow valve is so near the air intake and I don't have a cabin air filter installed. If it is the crossover gasket failing, where would I look to see evidence (other than dismantling the top of the engine).


Last edited by two bonnies on Thu Feb 19, 2009 10:11 am, edited 1 time in total.

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PostPosted: Sat Mar 21, 2009 5:01 am 
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Joined: Tue Jun 10, 2008 5:24 am
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Year and Trim: 05 bonneville GXP
My crossover was leaking and the puddle was below the pass side radiator tank. I thought it was the hose leaking.


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