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 Post subject: Coolant
PostPosted: Tue Oct 21, 2008 2:50 pm 
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Joined: Thu May 22, 2008 5:55 pm
Posts: 41
Location: Charlotte, NC (UNCC)
Year and Trim: 2004 Pontiac Bonneville GXP - Black
So for awhile now, the DICs been giving me the "Low Coolant" warning. Now, normally I'd just follow the manual's instructions for topping it off, but I remember hearing something about the Dex-Cool these cars came with originally... is there something else I should do rather than simply topping it off?

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 Post subject: Re: Coolant
PostPosted: Wed Oct 22, 2008 4:57 pm 
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Joined: Thu May 29, 2008 12:09 am
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Year and Trim: 05
It may not even need topping off, but always good to check. GXP 's like to do this randomly at startup. Several members have reported it and found coolant at normal levels.


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 Post subject: Re: Coolant
PostPosted: Wed Oct 22, 2008 5:39 pm 
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Joined: Sat May 31, 2008 2:05 pm
Posts: 322
Location: Kalamazoo, MI
Year and Trim: 2011Taurus SHO
I have been getting the same thing almost every morning. It was running a little bit low. I called the dealership (I am friends with the service writer) and he said just top it off. He said it was normal to have your levels a little lower (not a lot) once the weather turns cold due to over flow in the summer and then with the lower temps. I only needed about an inch added to the tank.

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2011 Ford Taurus SHO, Livernois Motorsports Stage 4x+ tune, 3 bar MAP sensor, Motorcraft SP534 plugs, 160* Tstat, best ET 12.5612@ 108.96 MPH running 0.75 gallons of E85 to 13 gallons of 93 octane, 35% tint, 2013+ fender badges! debadged trunk and rear quarter window

2008 Grand Prix GXP Dark Red, Magnaglow Cat Back, Overkill Motorsports Tune, K&N FWI, 20% tint, 6,000K HID lows, 5,000K HID fogs and HIR highs (sold)

2005 Greystone Metallic, cleared corners, 20% tint, drop in K&N filter with gutted air box, 6000k HID low beams and fog lights, LED interior lights and reverse lights (sold)


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 Post subject: Re: Coolant
PostPosted: Thu Oct 23, 2008 7:25 am 
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Joined: Sun May 18, 2008 11:17 pm
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Location: Grand Blanc, MI
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Your coolant level should never change unless you have a leak or it's being ingested.

However, it's common on GM vehicles to have a faulty coolant level sensor. Every GM car I've owned with that sensor has been faulty and indicates accordingly on the dash. You can either simply unplug the sensor (what I did with our Firehawk) or drain the coolant down, remove the sensor from the radiator, clean it, and reinstall it (what I did with our GS.

If you find that the coolant level is down start looking for a leak. If it's full, start investigating that sensor.

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 Post subject: Re: Coolant
PostPosted: Fri Dec 05, 2008 10:52 pm 
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Joined: Fri May 23, 2008 10:49 pm
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Year and Trim: 2004 GXP
I get the same thing. Sometimes I have a slight coolant smell coming from the front of the car, but it doesn't drip. Whatever it is, it's a small amount and it burns off somewhere on the hot engine. Anyhow, until it gets worse, I will just add a bit every so often to make the indicator go away. I did have a faulty sensor on my 2002 Impala however. Pulled the connector off of the sensor and that was the end of that problem. You probably are loosing a little fluid, if you find out where, let us know!


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 Post subject: Re: Coolant
PostPosted: Sat Dec 06, 2008 10:50 am 
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Joined: Tue Jun 03, 2008 12:51 am
Posts: 748
Location: Missouri
Year and Trim: 95 SSEi
05 GXP
Same problem on my GXP. Dealer pressure tested and found no leaks, (of course).
He topped it off and sent me on my way. Sure would like to find a leak, though,
if anyone comes up with a suspicious place.

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