Cold air when set to 60, but blows warm when AC button is pressed

[Kevinabrahamson]

I have a 2003 Silverado 1500 HD and when I put the climate control to 60º it blows out cold air but if I then press the AC button it

starts blowing warmer air. I'm not sure what to make of it. Am I doing something wrong?

 

Thanks

[Zimtok]

I had a problem with hot air coming out on my 04 Yukon XL...

I also have rear air and it would be blowing cold while the front air was blowing hot so I knew it wasn't a compressor or freon problem.

 

It turned out to be the Blend Door Actuator.

 

There are plenty of videos on YouTube showing this replacement.

 

 

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[ChevMech]

If I recall correctly, the 2003 model year, being the first year of mid-generation upgrade, had a climate control system different from the years following it. In my '03 the A/C was on when the snowflake on the display WAS NOT illuminated, and off when the snowflake was.

 

If you compare it to 04-07 you'll notice that the snowflake has a little line through it, where the newer ones just had a snowflake.

[silverado_nick]

If I recall correctly, the 2003 model year, being the first year of mid-generation upgrade, had a climate control system different from the years following it. In my '03 the A/C was on when the snowflake on the display WAS NOT illuminated, and off when the snowflake was.

 

If you compare it to 04-07 you'll notice that the snowflake has a little line through it, where the newer ones just had a snowflake.

That is sort of strange, I have an 03 and it blows pretty darn cold when the snowflake is illuminated. Unless they had a split year where that changed partway through the year.

[Kevinabrahamson]

It almost makes sense that when the snowflake is on that it would be off because there are two dots diagonal from each other on the screen almost like it would be a line through it. I wonder if they did switch halfway through the year?

[Zimtok]

So just a simple misunderstanding of the illuminated indicator/button as to what is "ON" and what is "OFF"...

 

 

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[ChevMech]

So just a simple misunderstanding of the illuminated indicator/button as to what is "ON" and what is "OFF"...

 

 

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Essentially, yes. I had the same debate with my cousin when he bought his '05 2500 HD. He was used to seeing the indicator off on my truck, but his stayed on.

 

Here's a really simple test of what you have:

 

1. Turn off HVAC system.

 

2. Press the "snowflake" button to activate the A/C.

 

The A/C is now on, so whatever emblem is illuminated/not illuminated is what you go by.