Question about 2005 Chevrolet Silverado

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NO AIR Have an 05 Silverado, air was workig fine, then stopped. After turning truck off a few mkin and back on, it started right up. After a couple hours when truck was turned on again, NO AIR! There is NO burning smell. Could this possible be a relay or would blower motor have been trying to go out and now has?

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  • Chevrolet Master
  • 21,873 Answers

I doubt its a relay.
The high blower relay only comes into play on the high setting. You have a 40amp fuse for the blower relay, then a 30amp fuse for the other speeds. The 30amp fuse powers the fan switch, when you turn it to high it activates the high speed relay.
I would check for power at the blower motor on all speeds.

Posted on Jul 11, 2013

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Posted on Jan 02, 2017

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SOURCE: 2000 chevy silverado 1500 4.3 eng

Chevy Trucks, Blazers, S10 pickup and the like will vapor lock ecspecially the 2000 models. Do not tighten the gas cap past 1 click. There is a tube that runs from the top of the tank down and this gets hot and collapses or burns in half. We just bought a reinforced rubber tube cut it to lengh and use it instead of part and it's worked grat for 2 years so far.

Posted on Feb 01, 2009

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SOURCE: 94 Cavalier had smoke coming through the A/C vents in my car.

either something melted in the housing from the heater core or the blower motor went bad. It could also be that there is a crack somewhere in the ac line.

Posted on Jun 27, 2009

Testimonial: "something caught fire in the blower motor housing and caused the motor to seize up. causing a burning smell/smoke."

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SOURCE: My heater fan switch won't turn on blower and I

thermostat or the divider door

Posted on Dec 03, 2009

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SOURCE: heater not working right in 1999 silverado

First check the coolant level if the engine is hot check the reserve jug on the firewall--if cold before start up remove the radiator cap and check coolant level add as needed. If the thermostat has been removed it needs to re-installed. It is possible that the heater hose(s) is stopped up. After letting it run for a period of time both heater hoses should be hot to the touch if they aren't something is restricting the flow of coolant the system needs to be drained and flushed. I have also see some vehicles form an air lock in the coolant system causing the same thing. It then needs to be (burped). This can be checked/done by removing the radiator cap while the vehicle is idleing and watching the water level in the radiator squeeze the upper radiator hose to see if the water/coolant level rises in the radiator. When you release the hose you may need to add some coolant this forces out the air. Hope one of these things. These are some of the cheapest fixes and if they don't work/help then you need to start looking at the heat control selector.

Posted on Dec 30, 2009

billyd1973
  • 73 Answers

SOURCE: Air conditioner suddenly stops blowing cold and

If you are absolutely confident the AC compressor is not kicking out on low pressure then it is the blend door actuator.

The blend door determines how much air blows through the heater core or evaporator.

The actuator can be purchased at dealer and maybe at a local part store.

Posted on May 27, 2010

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2 Answers

02 SILVERADO. AIR ONLY BLOWS OUT DEFROST VENTS. REPLACED CONTROL PANEL. NO LUCK


I had a similar issue on an 05 silverado. Air would only blow out of defrost vents. But this worked for me:

1) Unplug HVAC fuse for 10-30 seconds
2) Start truck
3) A/C comes out defrost - wait about 10 to 15 secs
4) A/C then starts coming out the floor vents for about 5 seconds
5) A/C then starts coming out the dash vents.
6) While the A/C is coming out the dash vents, turn A/C OFF (otherwise it cycles back to defrost for good).
7) Turn truck OFF
8) Restart truck and it should work fine

(Found solution on another forum from user "ccurran")

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1 Answer

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Hi!
Look like you may have an air lock.
Put the car on level ground, start it from cold with the coolant filler cap off, have plenty of warm/hot water available.
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Remember your anti freeze?
Good luck!
Paul 'W'
Onyer~EDson(:0) {#><U.K.

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