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- - 2004 gmc envoy (https://67-72chevytrucks.com/vboard/showthread.php?t=574441)

c10 custom

04-07-2013 12:12 AM

2004 gmc envoy

having an issue with overheating intermittently its a 5.3 engine the gauge goes up and then it will go down in about 5 minutes not sure what this is any help would be great changed the radiator cap already

JellyBeanDriver

04-07-2013 12:56 AM

Re: 2004 gmc envoy

Sounds like the thermostat is sticking.

95 S_Trucker

04-15-2013 08:33 PM

Re: 2004 gmc envoy

How's the coolant level? Does it do it when idling or when driving or both?
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c10 custom

04-15-2013 11:27 PM

Re: 2004 gmc envoy

it does the heating issue intermittently

Benny-

04-18-2013 06:49 PM

Re: 2004 gmc envoy

I'd suspect thermostat. Mine was doing the same thing and continually got worse until I changed it out.

Also, I'd check to make sure the fan is working properly, that the radiator is cleaned out, and that the water level is full.

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