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Well that usally means you have a rat or mouse nest in your heater vent box. Pretty common if you live near open fields. Take the vent box apart to view any blockage from the heater core to the vent box or a hanger gently down the vent opening see if you pull grass or straw out.
What else can I help you with?
Do you have to change timing belt in 1999 Buick lasabre?
It doesn't have a timing belt so, the answer is no.
1999 Buick LaSabre why would antifreeze be leaking on the side of the ac compressor?
Perhaps water pump is leaking?
Your 1999 astro van how do you get the dash board vents to open it stays in the defrost mode how do you fix this?
defrost is the default mode. in most cases a vacuun leak is the culprit.
What causes the front air conditioner on 1999 Lincoln navigator to stop blowing through the ac vents and start blowing through the defrost vents?
When there is a problem in the vent system it defaults to defrost setting. Check the doors & vac supply
Will a Buick Regal have interchangeable parts for a Buick LeSabre?
I need a blower motor and blower motor resistor for a 1999 lasabre will the regal have the same part?
Ac stuck on defrost 1999 Isuzu Rodeo. Cant get it off of the defrost setting. Need air to come through the center vents?
Your rodeo has 3 actuators. One is for your evaporator(cool air) another for your heater and the other one controls your defrost , face and lower vents. These electrical actuators are about the size of a donut and have a hole in the middle with a bushing which engages with your vents, located under your dash board on the passenger side.It may take alot of unscrewing and alot of patience, but its the only way to solve your problem.
Removing A Stock Radio From A 1999 Lexus ES300?
You have to remove the air vents/hazard lights/defrost button with a screwdriver and then there are 2 bolts that you take out above the radio and that's it.
What would cause a 1999 Jeep Grand Cherokee to have no ac to front vents but blow ac from defroster vents instead?
Check for vacuum leak either under the hood or under the dash Check the operation of the vacuum actuators Check the selector switch Defrost is the default setting on this system
Why wont the dash vents work in your 99 mercury sable but the floor vent and defrost vent work fine?
The issue with the dash vents not working in your 1999 Mercury Sable, while the floor and defrost vents function properly, is likely due to a malfunctioning blend door or a problem with the HVAC control system. The blend door controls the airflow direction, and if it is stuck or damaged, it may prevent air from reaching the dash vents. Additionally, there could be a vacuum leak affecting the actuator that directs airflow. It's advisable to have a professional inspect the HVAC system to diagnose and fix the issue.
Does a 1999 Buick has a timing chain?
Yes, any 1999 Buick will have a chain.
Where is the an alternator located on 1999 Buick lesabre?
Where is the a Alternator located on 1999 buick lesabre
Why does air start coming out of the vents and defrost and then stop coming after a while when you can still hear the heater fan motor running on 1999 Chevy S-10?
You have a vacuum leak somewhere. Check under the hood for a disconnected or broken vacuum line.
