Does the radiator have a cap? If so, if the coolant gets too hot,it will pop the cap and the coolant reservoir will fill up in a hurry, does it? As far as the radiator fan, when it gets too hot, pull over and stop, leave vehicle running, tranny in park or neutral and e-brake set, get out and look under the hood, to see if fan is running, is it? Any applicable trouble codes? Some national brand automotive stores used to check codes for free.

Answered by JDL (expert)
14,402 answers provided

The pressure cap is built onto the reservoir and has no way of coming loose. The heat does not come out of the vents as if the thermostat were stuck but I have had the thermostat replaced within the last 2 weeks. There has to be some kind of flow issue with the coolant but i have no Idea how to fix the problem.

Response from Wolfhound7919
1 question asked

What kind of coolant you used? Chev recommends to use Dex-cool (orange color) coolant only for chev malibu to prevent over-heating.
http://www.ehow.com/how_7197148_add-coolant-chevrolet-malibu.html

Answered by malibu1999
0 questions asked

Use an infrared temp tester to double check the gage. There should be overheating issues, besides the gage.

Answered by JDL (expert)
14,402 answers provided