Question about 2000 Chevrolet Silverado 1500

1 Answer

Heater/ air conditioner stuck

When i turn on the air weather it be cold or hot, it is stuck coming out of the defrost/ front windshield vents. I guess if it was to to be stuck anywhere, the defrost position is the best one because during the cold months it is necessary for it to operate through the defrost if i want to see out of the windshield, however durring the summer months it is a "sweat box" because i cannot turn the cold air to come out of the dash vents. i was stuck before and i got it to move once and than back and it has been stuck since. Please help because otherwise i'll be forced to drive my wife's honda anywhere the family goes together because she will not ride in the truck untill i can fix it and cool it off.

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 52 Answers

You have a vacuum leak! Check the vacuum ball for cracks or missing hoses.
Good luck!

Posted on Jan 05, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My 2001intrepid only defrost windshield but no air flow coming out of vents for a.c. or heater what's the problem

My guess would be a stuck flap turn the ignition on and turn the control knob back and fourth you should hear the flap if you dont heater box has to come out and check the flap and the electric motor

Feb 02, 2015 | Cars & Trucks

1 Answer


I have seen this happen when the AC is turned on in humid weather but I have never seen it happen in cold weather. What temperature is the air coming out of the windshield defrost air vents?

Jul 03, 2014 | 2000 Lexus ES 300

1 Answer

2003 ford expedition i just got it a week ago and the front heat works great but the back vents only blow cold air. How do i fix this?

With the car parked and engine idling, turn the ventilation control between windshield defroster and "open air ducts" to front and rear vents. Listen to pinpoint where the valves are that open and closes the air ducts. It sounds like the air duct to rear vents are blocked, and the cold air in rear air duct is coming from "outside ventilation." The air vent to allow hot air to the rear vent is stuck in "open ventilation" mode, like when you're driving in spring or summer months.

Nov 29, 2013 | Cars & Trucks

1 Answer

2002 Nissan Sentra Defrost stuck. Only hot air comes out.

The blend door in the plenum is not moving. IT could be the control arm or the control or the door or the shaft. You can access it through the glove box.

Aug 10, 2012 | 2002 Nissan Sentra

1 Answer

I have a 2000 Mercury Grand Marques LS, the air conditioner started blowing really hot air and couldn't get it to adjust up or down had to turn it off, then (after the weather cooled down) when I turn the...

Sounds more like a control valve is not working correctly.. probably stuck in one position because you should always have heat from your heater when you chose fresh air or recirculated switches a valve to allow the change...well from cold to heat there's a valve also that switches the vent inside dashboard

Oct 05, 2017 | 2000 Mercury Grand Marquis

1 Answer

I have an 01 Jeep Grand Cherokee. When you turn on the air conditioning air does not blow out any of the vents except a small amount of air (cold) will blow out the defroster vents by the windshield. If...

behind the center counsel between the floor and the heater housing is a part that is called the blend door actuator. these usually go bad and have to be replaced.

Mar 15, 2010 | 2001 Jeep Grand Cherokee

1 Answer

Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500

2 Answers

Heat wont blow through heater or defroster vents

Had the same problem. believe it or not i changed the gas cap and got heat all around. something about pressure.

Dec 05, 2008 | 1993 Chevrolet Corsica

1 Answer

Air conditioner staying on...

Many cars use air conditioning as part of the defrost function. Cold air will clear windshield faster than hot air.

Aug 01, 2008 | 2001 Honda Civic

Not finding what you are looking for?
Cars & Trucks Logo

279 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

77932 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides