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Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-26-2005, 07:48 PM   #1
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Default expected or bad sign....?

"Low Engine Coolant" message shown for GXP on auction.... what could this really mean?

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Old 12-26-2005, 08:44 PM   #2
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Low Engine Coolant" message comes up on 05 GXP whenever the car sits parked for a day or more. I have just been too lazy to bring it in to get checked out.
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Old 12-27-2005, 03:09 PM   #3
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It'* a Northstar...

My Mom has a 02 Deville (same engine of course) with 39K miles and it won't hold coolant. Not leaking on the floor. It'* going back in the shop for warranty (pre-existing condition that was reported before the warranty ran out). Of course, my 03 SSEi won't hold coolant either.. It'* actually leaking it somewhere.

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Old 12-30-2005, 05:44 PM   #4
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Default Low Engine Coolant

I saw this on my 2004 GXP and checked the overflow reservoir. I just added a little bit of distilled water (about a pint and half) and haven't seen the problem resurface. it has been at least 5 months since I last saw it. Coloant can evaporate over time from the overflow reservoir. The sensor for low coolant is in there (the overflow reservoir) so if it'* a little low it will send the "Low Engine Coolant" message to the DIC. I wouldn't worry about it too much unless it becomes a constant issue like every week after you add water or coolant to the reservoir.
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Old 12-31-2005, 07:03 PM   #5
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I cant get the top off my overflow. I try to push and turn but nothing.
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