Blower motor, relay ,fuse have been checked. All good
Buick Q&AAsk Your Question
1997 Buick LeSabre Question: Why won't my Ac/heater blow out the vents on my Buick regal?
Answer #1pushrod October 28, 2012, 22:49Master
VACUUM LEAK UNDER HOOD PASS. SIDE SMALL HOSE OR PLASTIC TUBE. BEST GUESS! VACUUM IS WHAT SWITCHES MODE SLECTOR!!
Answer #2your.mechanic October 29, 2012, 04:20Master
With blower motor running is the fan moving air or not? if it is, there is blockage in the air ducts.
Greg's Orange Auto (15188 Answers) , Orange, CA - (714) 361-9386globalhelper October 29, 2012, 09:20Master
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