Mechanics

TEMPERATURE GAUGE FLUCTUATES

2005 Chevrolet Tahoe • 150,000 miles

Got a message saying "engine coolant hot"; the temp gauge fluctuates between red zone and 1/4 marker, but hasn't overheated; engine coolant low but no visible leakes according to GM dealership pressure test; GM dealership filled up coolant and everything has been running properly fotr the last 2 days
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Caleflore
September 8, 2011.



Keep an eye on the coolant level to make sure there are no leaks or coolant isn't being consumed. You may have just been low on coolant.