Have you been checking the level regularly? If you have, then do you see any sign of coolant in the engine compartment, on the ground? Car been running hot? Check engine light on? Check the oil, coolant could be mixing with the oil if a head is cracked.
Most likely the intake manifold. VERY common issue on the 3800 Series II.
2004 Buick LeSabre Custom Sedan FWD
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Maintenance & Repair
My coolant fans only works when I put ac on I change the relays still doing the same thing can someone tell me what else needs to be done I also change temstat
2001 Buick LeSabre Limited Sedan FWD
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Maintenance & Repair
the gas gage reads full or empty is this a gage problem or a ground I was told the fuel pump / gage had been replaced at one time, could it be a bad connection or miss wired gage?
2004 Buick LeSabre Limited Sedan FWD
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Maintenance & Repair
Engine coolant resevoir is going empty every couple of days. Opened the radiator and found oil; there was no coolant when I opened the oil cap however. Car is not overheating, misfiring, or blowing ...
1995 Buick LeSabre
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Maintenance & Repair
Ive noticed a slight coolant leak in my 2002 Buick LeSabre custom for a few months. But a day after filling the resevoir, it was near empty again. I checked it out underneath while changing my oil...
2002 Buick LeSabre Custom Sedan FWD
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Maintenance & Repair
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