2005 LeSabre, with climate control. The A/C and Heat seem to work fine. However, the fan stop working yesterday. The display on the climate control panel shows the fan to be operating at max (led shows 4 bars), but no air. Located in San Antonio. The last 2 days have had large amount of rain (5-7 inches). I went through a lot of puddles and water, no high water. I pulled the fuse block cover (under the hood), could not determine which fuse to check. Same with block under rear seat. Car has 150,000 + miles. John

SOURCE: rear window defroster, no driver heated seat

check the ground on the passenger side of the rear window under the trim panel. That is what was wrong with mine.

SOURCE: max air button does not respond

"MAX" ONLY puts the climate control in the RECIRC mode. Door modes change to " RECIRCULATE" interior cabin air back to be RE-COOLED, instead of using HOT OUTSIDE air to cool. If the problem is in the panel, complete replacement is required. Hope this helps

SOURCE: 1995 buick park ave blower motor stays on

Replace your blower motor relay. It's located under the hood on the firewall passenger side.

SOURCE: Fan for heat/air will not work on 1-4 settings

check the blower motor resistor that is where the different speeds come from

SOURCE: GM '97 Buick Le Sabre Climate Control flashing display

I did the exact thing with my '98 buick LeSabere. I am certain that the dealer would have to look at the components and relays and fuses. I had problems with Precision tune mechanics telling me there is nothing wrong with the electrical system, even though I still get a Flashing temp gauge and do not get FULL heat even when it's blasted to 90ºf . [Precision Tune got heat on the windshield and floor.] Moreover, the car is possessed with glitches; I am not getting heat on the windshield and the floor is not hot enough to warm the cabin.