1999 - 2006 (GMT800) Section for all discussion related to the 1999-2006 Chevrolet and GMC trucks.

05 silverado heat question

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Old Oct 30, 2017 | 7:31 AM
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Default 05 silverado heat question

Hey guys I have an 05 1500 with 110k miles

I live in north dakota so gets pretty cold

In the morning the truck takes a long time to heat up I can let it warm up for 15-20 mins and it won't even really be warm yet

But as soon as I start driving it it gets warm and the heat works awesome, it's actually warmer than my other vehicles

Is there anything I can do about this or is there something wrong? Or is this how these trucks are?

Thanks!
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Old Oct 30, 2017 | 7:57 AM
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Check to make sure the thermostat is working properly and that you have the correct one installed. Did this just start to happen?
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Old Oct 31, 2017 | 3:20 AM
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Originally Posted by oldchevy
Check to make sure the thermostat is working properly and that you have the correct one installed. Did this just start to happen?
Well I just noticed it because it started getting cold, only had it for a year but I feel like it was a little slow to warm up last winter as well.
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Old Nov 9, 2017 | 12:01 PM
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Any other ideas? The temp gauge heats up all the way but the air is still blowing cold until I drive, after I drive a short distance it is very warm after that
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Old Nov 10, 2017 | 5:50 AM
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That sounds like the waterpump might be laying down, or you may have a blockage.
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Old Nov 11, 2017 | 5:25 PM
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for emissions, the time it takes the coolant to come up to temp is monitored. if there is a problem with the thermostat stuck open, a p0128 would be set. if this code is present, replace the thermostat.

if the coolant is low or air pockets exist in the cooling system, a low heat at idle condition can occur.

normally, it WILL take longer for the cooling system to come up to temp at idle vs driving.

also, when the system is up to temp, a faster running engine moves the water pump faster...moving more coolant thru the heater core= more heat.
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