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pretty bad
Typical Repair Cost:
No data
Average Mileage:
90,850 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. not sure (4 reports)
2005 Chevrolet Monte Carlo cooling system problems

cooling system problem

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2005 Chevrolet Monte Carlo Owner Comments

problem #4

Dec 152015

Monte Carlo 3.4L

  • Automatic transmission
  • 132,354 miles


It doesn't actually overheat. The temp gauge is up and down or doesn't move at all. Hot coolant light and annoying ding, ding, ding alarm comes on. I have to turn temp down and flip A/C on and it will stop..but, not for long!

- Lori M., Weatherly, PA, US

problem #3

Nov 032009

Monte Carlo LS 3.6L V6

  • Automatic transmission
  • 80,000 miles

Just recently I noticed that my temp gauge creeps over the half-point mark and slowly, but surely, increases. It does it more often if I am shifted to park or stopped at a red light. The needle on the gauge never hits "the red", but it has gotten pretty close a couple of times. I will be the first to admit, I am nowhere near a car buff, nor do I have the expertise as many writers on this site. Radiator looks full and so does the reserve (original GM DEX Coolant and early this summer added a little more DEX to the reserve). At every oil change they check it and they say its fine. To my knowledge I do not think the vehicle has ever had a flush or previous problem with the radiator (no major heating/cooling/power-train/engine/accident has ever been reported via my paid "Car-Fax" report). Unfortunately, because of my ignorance toward more complex and operational technicalities with automobiles, I am not too sure where to begin, or what may even be the problem. Anyone with any insight would be greatly appreciated!

- Angelo A., Detroit, MI, US

problem #2

Apr 212008

Monte Carlo LT 3.8L V6

  • Automatic transmission
  • 74,000 miles

car keeps overheating, ive changed the thermostat and the dex/cool overflow keeps getting low. any suggestions????

- Erin M., St.Louis, MO, US

problem #1

May 202007

(reported on)

Monte Carlo LT 3.4L

  • Automatic transmission
  • 77,000 miles

the temp. gauge bounces up and down, it never gets to the point of overheating, but it's close. the heater blows hot and cold off and on, i replace the thermostat, but still no change.

- Bryan F., Mantua, OH, US

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