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2005 Chevy Silverado Hot air

Tiny
KINGTAUPO
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 81,000 MILES
My 2005 Silverado K1500HD has an AC issue. The AC run well when I am driving on the interstate or at speed. When I am stopped or in stop and go traffic the temp raises to an uncomfortable level. In this heatwave its almost unbearable.
Please help me!

F
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Monday, July 26th, 2010 AT 12:47 PM

12 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
Check to see if cooling fans are on with A/C
Let me know
Thanks for donate
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Monday, July 26th, 2010 AT 2:28 PM
Tiny
KINGTAUPO
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  • 6 POSTS
Ok, bare with me, what are the cooling fans? I am a novice. The air blows inside the truck but it is much warmer at idol.
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Monday, July 26th, 2010 AT 3:07 PM
Tiny
KINGTAUPO
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Okay, I think I know what the cooling fans are, however there does not seem to be cooling fans on this vehicle. I assume they would be in front of the radiator or exchanger for the AC. From what I can see (going back to front) there is the radiator for the engine, the exchanger for the AC(smaller) and what I assume is a exchanger for the oil (even smaller). There are no fans on any of these exchangers. The radiator fan is behind the bid radiator toward the cab. Thanks!
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Tuesday, July 27th, 2010 AT 8:19 AM
Tiny
DOCFIXIT
  • MECHANIC
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Fans on back radiator towards engine see figure


http://www.2carpros.com/forum/automotive_pictures/198357_Graphic_527.jpg

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Tuesday, July 27th, 2010 AT 12:09 PM
Tiny
KINGTAUPO
  • MEMBER
  • 6 POSTS
Thanks for working with me in this. I pulled the plastic cover off the top of the radiator and there are no fan infront of or behind the oil heat exchanger, the AC heat exchanger or the engine radiator. See picts.


http://www.2carpros.com/forum/automotive_pictures/554744_P1020672_2.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020671_1.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020670_2.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020669_2.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020668_2.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020667_1.jpg

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Tuesday, July 27th, 2010 AT 2:02 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
O.K.
Pics show front of radiator little rad is for power steering next is condensor for A/C then Rad look between rad and front of engine for fans
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Tuesday, July 27th, 2010 AT 2:44 PM
Tiny
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  • 6 POSTS
So behind the engine rad and before the large fan for the engine rad?
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Tuesday, July 27th, 2010 AT 3:13 PM
Tiny
DOCFIXIT
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There is a fixed fan attached to water pump? If yes does not compute year and make correct? So with fan clutch system see the center of fan assembly round thing about 6in. Across? That is fan clutch viscous coupling. Engine at op. Temp. Fan should be firm ie. Hard to turn by hand. If easy replace.
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Tuesday, July 27th, 2010 AT 3:22 PM
Tiny
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The is a large off white plastic fan infront of the water pump that the serpentine belt is attached to. There are no other fans from that fan forward or rear. See picts.


http://www.2carpros.com/forum/automotive_pictures/554744_P1020673_1.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020675_1.jpg



http://www.2carpros.com/forum/automotive_pictures/554744_P1020677_1.jpg

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Tuesday, July 27th, 2010 AT 3:50 PM
Tiny
DOCFIXIT
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That is a mechanical fan and clutch silver thing in middle is clutch that needs to be replaced if not hard to turn by hand engine hot.
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Wednesday, July 28th, 2010 AT 1:28 PM
Tiny
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The clutch replacement will fix the AC issue? How are they related?

Thanks
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Wednesday, July 28th, 2010 AT 1:39 PM
Tiny
DOCFIXIT
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Driving at speed A/C works because ram air is driven through condenser to cool. In traffic if clutch is faulty it will not pull enough air through Condenser to cool freon so A/C stops blowing cold.
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Wednesday, July 28th, 2010 AT 2:11 PM

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