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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2000 SE: 17" Chrome Grand Prix GTP wheels, Pirelli P-Zero Nero Rubber.
180,000 miles and running smooth

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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Andrew - owner/operator of Bonnevilles Unlimited

2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night Hauler/Parts runner
2014 Town & Country Limited | Cashmere Pearl | 95k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 260k | Official Bonneville Hauler

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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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)

Yeah, thats exactly the problem.


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

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2000 SE: 17" Chrome Grand Prix GTP wheels, Pirelli P-Zero Nero Rubber.
180,000 miles and running smooth

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.

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).

My crossover was leaking and the puddle was below the pass side radiator tank. I thought it was the hose leaking.