1997 Tahoe heating up

[C_andy460]

I have a stock 1997 Tahoe and she has started to run a little hot. I have checked fluids, cap, hoses and all is good. When going down the highway with the a/c on it just keeps going up and you turn the a/c off but it is slow to cool down. I am thinking it maybe the radiator. Any other ideas?
Andy

 

[_Dylan_]

Take out the thermostat and put it in some water higher than 195 (if its 195 stat) and check to make sure its opening.

Fan is working?

 

[Fishintahoe]

Double check and triple check ur water level. You might have a leak somewhere.

 

[WalterMitty]

Double check and triple check ur water level. You might have a leak somewhere.

And if you have a leak, the system won't pull the coolant back out of the overflow tank when things cool off. The overflow tank could show full and the radiator be half empty.

 

[C_andy460]

Happy camper

My Tahoe has stopped over heating...I changed (in order) thermostat, waterpump, anti-freeze, pressure cap, clutch fan, radiator. And the winner is...

top 7 rows of radiator



bottom 7 rows of radiator



dam thing was plugged up bad, and I had flushed it at 95,000 miles.
Andy