The temperature gauge goes up, message says overheating

PENN35

MEMBER
2004 CHEVROLET AVALANCHE
211,000 MILES

I put the AC on the temperature goes back down to normal 205 deg. I was driving got caught in traffic, truck started overheating message came on saying overheating. I pulled over immediatly, waited for 1 hr. Then continued on. I started moving again the temp went up so I put on teh ac and temp went back to normal at 205deg. Then when I'm driving for a while I shut the ac off and temp stays normal.
2004 chevy avalanche 1500 z71

I changed the water pump about 100,000 ago

I checked the fan and turned it counterclock wise and it has resistence, I thought it might be the clutch.

I'm stumped

Frank

3 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

It has something to do with the fan clutch. If it does not turn at idle, then yes, it will overheat. There is an update flash for the computer on this issue. I have done many of them for this reason.

Roy

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Sunday, October 16th, 2011 AT 10:49 PM

PENN35

MEMBER
2 POSTS

So changing the fan clutch will fix the problem?

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Monday, October 17th, 2011 AT 1:30 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

I am not there but as I said, there is a flash update on that issue and you need to have it confirmed first before throwing parts at it. The clutch is not cheap and may not need to be replaced just told by the computer to come on at the right time.

Roy

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Monday, October 17th, 2011 AT 1:34 PM