I have an 04 Silverado. Changed the coolant, thermostat and hoses. about a month or so ago. well know when I let it idle with the A/C on the temp. climbs up 215 to like 233. what does everyone think it could be? I was thinking it was my fan clutch ,might be switching to e fans. what size and where can I get the whole kit with everything.

 

does the fan clutch feel bad?

 

maybe you didn't purge all the air out of the coolant system

 

How do you test the fan clutch? also how do you purge all the air out?

 

With the engine off, try spinning it. It should spin with a little resistance. If it is really hard to turn or spins freely, it is probably worn.




I have always used the following method with good results:

Jack up the front of the truck

Remove radiator/overflow cap

Turn the truck on

Turn the heat on High

Let it run for 30 minutes or so

Add coolant as necessary

 

OK thanks will try this..