Overheat for GMC Sierra 2018

[Joe_ qtr]

Hi

I bought new GMC Sierra 1500 and just now I have issue while I’m driving more than 80 m/h the heat gauge show me more than half, and the heat usually half only, one of my friends told me it is because the active grill, should I take my care the dealer or it is normal???

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[silveradosid]

if the truck is giving you a warning that it is over heating then take it in thats not normal 

[Joe_ qtr]

if the truck is giving you a warning that it is over heating then take it in thats not normal 

No , there is no warning showing to me


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[Sierra Dan]

Active grille shutters are most likely the culprit.

[diyer2]

No CEL or warning, drive on.

 

[BigBadSierra]

That's not a huge deal.  You may have the dealer just check the purge on they system in case you have a little air in it.  I've seen my trucks up there on hot days and slow traffic.

[HeySkippyDog]

Vehicle overspeed? What in tarnation.

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[JimCost2014]

3 hours ago, HeySkippyDog said:

Vehicle overspeed? What in tarnation.

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It is your DIC, you can set a speed alert, and when you exceed the speed you get the message. Example, if you have a heavy right foot, set it at, say 75, then when you cruising down the freeway and go over 75, you get the message to slow down.

[JimCost2014]

6 hours ago, Joe_ qtr said:

 

Hi

I bought new GMC Sierra 1500 and just now I have issue while I’m driving more than 80 m/h the heat gauge show me more than half, and the heat usually half only, one of my friends told me it is because the active grill, should I take my care the dealer or it is normal???

See the photo

 

 

Sent from my iPhone using Tapatalk

 

Maybe run by a local (big chain) parts store and see if they can hook up a scan tool and compare what it says to what you gauge is showing.

[damnthetorpedoes]

What's the outside temp when you are seeing this?

[SS502]

45 minutes ago, JimCost2014 said:

Maybe run by a local (big chain) parts store and see if they can hook up a scan tool and compare what it says to what you gauge is showing.

Yeah, that looks like 221F (if I read that as 105C) which is a tad higher than mine runs...good idea.

[dieselfan1]

Isn't it like -20 to-30 C up dare?

[JimCost2014]

5 hours ago, SS502 said:

Yeah, that looks like 221F (if I read that as 105C) which is a tad higher than mine runs...good idea.

We always used the formula (to get close) x2, plus 30. So, I would say around 240, which is pretty damn hot.

[SS502]

6 minutes ago, JimCost2014 said:

We always used the formula (to get close) x2, plus 30. So, I would say around 240, which is pretty damn hot.

Yeah we used that formula for daily weather when I was overseas...for my conversion here I cheated and used Google...

[JimCost2014]

47 minutes ago, SS502 said:

Yeah we used that formula for daily weather when I was overseas...for my conversion here I cheated and used Google...

Hmmm, I am going with my conversion, sounds much more dramatic than it really is, like most things on here.....