answersLogoWhite

0


Best Answer

Heater Core is stopped up with debris not allowing for smooth air flow through it. Or something stuck in the back of the fan assembly not allowing the fan to be able to pull air through. Found one of those plastic grocery bags covering the back of the fan in my 1997 Suburban



Good luck.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Why does the dash vents not get good air flow on 1997 gm suburban?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why would the dash vents on your 2004 Trail Blazer not allowing air flow?

It should have nothing to do with the vents itself. More than likely it's the blower motor that's not working.


Why won't the dash vents work on my 1995 Chevy Camaro but floor vents and defrost vent work fine?

When there is a problem with the vent system it dfaults to the defrost setting. Sounds like you have a problem in the doors that direct the air flow.


1995 G20 Van - Why will Air Conditioning only blow out of the defrost and lower floor vents and not the dash vents?

Air flow is controlled by plastic doors which are controlled by vacume motors. Could be they're stuck, or a vacume leak.


Why is there no air coming out of vents can hear air blowing under dash board?

The year, make and model would help but many vehicles use vacuum to operate the direction of air flow through the floor vents, dash vents and defrost vents. If the vacuum supply is cut off for whatever reason the system defaults to defrost only. So if you only have the defrost mode working chances are the vacuum supply is cut off. Check the HVAC vacuum supply line under the hood for damage. If that system seems to be working but you have insufficient air flow through all of the vents, check/replace the cabin filter if applicable.


How do you repair front vents on a Buick Park Avenue?

No air flow? Check for vacuum leak either under dash or at engine compartment Maybe bad vacuum diaphragm under dash Maybe bad selector control


Why is there no air flow out of the defroster on a 99 Dodge Ram 1500 while the dash and floor vents work fine?

either faulty switch on dash, acutators inside the dash, or broken doors or plastic inside of dash.... common problem on the 2002-2004 or 2005 there was a total dash replacement kit it change out the broken plastic pieces inside the dash


What is the large molded plastic housing with vents vacuum hoses and controllers that routes the air flow under my dash called?

I call it the HVAC (Heating, Ventilation and Air Conditioning) box.


What will cause no air flow out of center vents on a 99 sl500?

a person satnding in the way of the vents


What could be the reason for no air coming through the vents if the blower motor is workingon a 1998 Dodge Dakota?

You need to look under your dash and make sure all the heater vent tubing is still connected and if so there is a flap located about the center of the dash that transfers the flow of air from the dash to the vents it could be hung in one position,hope this helps,Ricky.If that doesnt work then you need a new blower motor


Why does a 2001 Chevy Silverado 1500 HVAC fan work at all speeds but there is limited air flow to the vents?

Replace the cabin filter. remove panel under dash on pass side.


Do vents help air flow better?

Yes


93 Chevrolet alumna has low heater air flow on center vents?

You will need to check the vacuum for the air door operations first and then check to make sure that the doors are working correctly in the dash...........