# Silverado overheating

**URL:** <https://community.cartalk.com/t/silverado-overheating/175857>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, silverado-1500, engines\
**Created:** [March 28, 2021, 4:21pm UTC](https://community.cartalk.com/t/silverado-overheating/175857 "2021-03-28T16:21:31Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [April 3, 2021, 11:43pm UTC](https://community.cartalk.com/t/silverado-overheating/175857/21 "2021-04-03T23:43:40Z")

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I’m not fixated on the low voltage input code

I’m suggesting . . . as I stated earlier . . . that the coolant temperature gauge may in fact be reporting the correct values

I’m suggesting this because fan operation seems to affect the coolant temperature gauge reading

Those 4.3 liter V6 engines were absolutely notorious for blown lower intake gaskets, which is a situation which could lead to elevated coolant temperature

You’re concentrating on the low voltage input code

I’m more interested in the actual coolant temperature, and why it may be high

Have you even used a 2nd method . . . such as an infrared or laser thermometer . . . to determine the actual coolant temperature?

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**Author:** ![redneckred](https://avatars.discourse-cdn.com/v4/letter/r/50afbb/32.png) [@redneckred](https://community.cartalk.com/u/redneckred)\
**Post date:** [April 4, 2021, 3:27am UTC](https://community.cartalk.com/t/silverado-overheating/175857/22 "2021-04-04T03:27:08Z")

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I do not own one so I have not.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/48514_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [April 4, 2021, 9:32pm UTC](https://community.cartalk.com/t/silverado-overheating/175857/23 "2021-04-04T21:32:54Z")

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> [@db4690](#):
>
> Have you even used a 2nd method . . . such as an infrared or laser thermometer . . . to determine the actual coolant temperature?

> [@redneckred](#):
>
> I do not own one so I have not.

Here you go:

> **[12:1 Infrared Laser Thermometer](https://www.harborfreight.com/121-infrared-laser-thermometer-63985.html)**
>
> Amazing deals on this 12:1 Infrared Laser Thermometer at Harbor Freight. Quality tools & low prices.

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