0
Vacuum supply to HVAC is cut off for whatever reason. Check under hood for a broken or disconnected vacuum line.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Where is the antenna on 2003 Chevy Impala?
It is tied in with the rear window defrost grid.
Where is the antenna located on 2003 Chevy Impala?
It is tied in with the rear window defrost grid.
What causes the air conditioner on a 2003 Chevy trailblazer to stop blowing through the ac vents and start blowing through floor and defrost vents?
Check for a vacuum leak -sounds like it is starving for vacuum and reverts to the default position
Why does my air only blows out my front vents and not the floor or defrost on your 03 dodge ram?
There may be several reasons why the air only blows out the front vents and not on the floor or the defrost on the 2003 Dodge Ram. The fuses may be blown, or the heating coil is not working correctly.
Why does a 2003 Crown Vic with auto temp control blow heat and ac from the defrost and floor vents but no air through the dash vents?
Because the air selector died.
The air conditioner only blows through the floor and defrost vents on a 2003 Saturn L300 how do you fix this?
Many HVAC systems operate with vacuum supplied from the engine. If the vacuum supply is cut off the system goes into default position which is floor and defrost. Look under the hood for a small vacuum line from the engine leading into the firewall that is damaged, cracked, pinched or disconnected.
What are the top reasons the check engine light comes on on a 2003 Chevy Malibu?
Check your fluid levels.
How much differential gear oil on a 2003 Chevy Tahoe?
till it comes out of the fill hole about a quart
Why is my 2003 trailblazer stalling while idle and heater is on?
If defrost is on it could be your compressor going bad. See what happens when you leave off defrost or disconnect your compressor. It only controls defrost and air conditioning. I had the same problem
When was Get It On The Floor created?
Get It On The Floor was created in 2003.
How to get a coin out of the defrost port of your 2003 ford focus?
Piece of bubble gum on a stick.
Does a 2003 Chevy Venture come 4 cylinder?
the only engine that comes in the venture vans is the 3400 (3.4L) GM V6
