1997 Buick LeSabre Q&A

1997 Buick LeSabre Question: Why won't my Ac/heater blow out the vents on my Buick regal?

Blower motor, relay ,fuse have been checked. All good -
Answer 1
VACUUM LEAK UNDER HOOD PASS. SIDE SMALL HOSE OR PLASTIC TUBE. BEST GUESS! VACUUM IS WHAT SWITCHES MODE SLECTOR!! -
Answer 2
With blower motor running is the fan moving air or not? if it is, there is blockage in the air ducts. -
Answer 3
ck vac lines under hood that go thru firewall on p/s there could be one that is broken and not letting vac get to controller head -