Best Answer

Main heat vaccum door may be broken or stuck.I believe it is near the gas pedal. I would run switch and see if it functions and check for loose condition. This happened to my 2000 S10 after I drove thru freezing rain which may have frozen solid and when heater was turned on the resistance broke the pivot internally. had same problem on 1999 astro bad vacuum line look by fornt passenger tire for round black ball line from there over top of engine to connector behind dog house heat from manifold dries it out i replaced with black rubber works fine

User Avatar

Wiki User

โˆ™ 2006-02-06 17:48:13
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are possible problems in a 2000 Chevy Astro if the heater selector stays in defrost mode all of the time but the blower speed and temperature knobs still function like normal?
Write your answer...
Related questions

What is data selector?

Operating Temperature of valus

Selector only stays on defrosted 92 buick?

If the heat selector will not switch from defrost to the dash or foot vents on a 1992 Buick, it is possible that the cable connected to the vent is broken. When the selector is moved from defrost, a cable opens the other selected vents on the heater.

What is the function of Tab selector in Microsoft Word?

There are various kinds of tabs available in Word. Before setting a tab you need to choose which tab type you want. Clicking on the Tab selector allows you to do that.

How do you fix a Jaguar XK8 with an intermittent transmission selector problem?

There typically are 2 micro switches witch need to be replaced. in the selector. if you have problems shifting into gear replace the brake light switch.

What are the difference between class selector and id selector?

While an overall block is given to class selector, ID selector prefers only a single element differing from other elements.

What is a stitch selector?

a stitch selector is apart of a sewing machine.

2001 Chevy luminia car ac blower only blows on defrost why?

Faulty Function selector switch. Consider replacement.

How does auto clean work on older jenn-air oven?

Set both "Selector" and "Temperature" to clean. Move lever to right to "Lock." Hit "Enter" button twice. Now I just hope I remember how to unlock and open it once it has cooled. I think you hit cancel twice and move Selector and Temperature to off.

What is cell selector?

=cell selector is an object that can be used for cell selection.=

Cool air runs through defroster vent 1999 mercury couger?

Assuming your temperature selector is not on "cold", the heater core is likely bad

Will a bad range selector on a Mercury Sable cause it not to shift?

It is possible if the selector doesn't lock in to position. Also check the transmission fluid level. Low fluid will also be a factor. There could also be other issues that should be looked at by a professional, reliable transmission shop.

How do you change the selector motor within the dash of a 1999 ML 320?

What selector motor are you meaning?

What is a link selector pointer?

The link selector pointer displays a pointing hand when you point to a hyperlink.

What is dry selector?

== ==

Use the word selector in a sentence?

- Emily freeman also showed good form with 24.00 in the 200m to impress the selectors for the forthcoming european cup team.- The machine's sample rate is adjusted by using a rotary selector on the rear panel.- All the details are now black too: the knobs, truss rod cover and pickup selector are all replaced.- Selector specified in bx is not a code segment or is invalid.The rotary selector switch to the right was the monitor selector switch to the right was the monitor selector.You then type the name you want to use for your id selector.Selector lever is on the steering column.Instead of classes, we use the element names and use descendant selectors.There is also a random data selector to request samples of data from our databases.Selector widget on your form next to the label.Attribute selectors attribute selectors allow you to target an element based upon its ' attribute ' .It shows the possibilities that we would have if ie was to add support for pseudo and adjacent sibling selectors.Click on the source selector icon to open the data source selector icon to open the data source selector popup window.A voltage selector plug permits adjustment of the output voltage, and the frequency can also be adjusted by tap selection internally.Chief selector wasim bari gave his blessing from pakistan.Selector dial is now much easier to rotate.This online version has a linked contents page, a chapter selector and a page selector feature.

What is the purpose of a speaker selector?

A speaker selector can be used with one or more amplifiers. Multiple speakers can be used by connecting into a speaker selector. It allows a radio or outlet device to be played on multiple sources.

Where is the temperature controller on a 2000 silverado 1500?

It is in the center of the dash just below the radio, left knob is fan speed, center is hot/cold selector, right is mode selector. 2000 Chevy Silverado LT Ext Cab 4 dr 5.3L 4x4 Z71

What selector in HTML is used to match any element in the hierarchy?

The * selector is used to match any element in the hierarchy.

Where is a gear selector wire on a 1994 Pontiac grand prix?

The 1994 Pontiac Grand Prix gear selector wire can be found beneath the center console. The gear selector wire will go to the instrument panel.

Why ignition switch on a 1998 Ford Taurus locked up?

Ignition switches of that era had problems . Make sure gear selector is hard in Park and try again. If necessary spray a lubricant in the ignition keyhole.

How do you bypass fuel tank selector valve on a 1987 ford f-150?

get a single function reservior off of a single tanked 85-89 efi truck/bronco.

Why does your 2000 34 ton electronic shift transfer case get stuck in 4 wheel drive?

had the same problem with my 03 2500hd. its the selector switch. they've had problems with them in the past.

What rhymes with selector?


Does transmission selector in console light up in 1999 Dodge Intrepid?

No. It has a unlit reference. The illuminated selector in on the center dash.

What is a Publix selector?

A selector is given a list of products to put on a pallet. These products are ordered by individual stores. The selector is told what to get over walkie talkie and then gets them all gathered up and wraps them on the pallet, then gets them ready for delivery.

Study guides

Create a Study Guide