Check you battery
how does the horn pad come off an 89 riviera
180-205.
under hood
To repair the blower motor resistor on a 1989 Buick LeSabre, first disconnect the vehicle's battery to ensure safety. Locate the blower motor resistor, typically found near the blower motor under the dashboard on the passenger side. Remove the wiring connector and the screws securing the resistor, then replace it with a new unit. Finally, reattach the wiring connector, secure everything back in place, and reconnect the battery to test the blower motor.
Yes you do and its a pain
rmove the radio and it is directly behind it.
Yes, if you really want to. You have to have a long enough hose
Yes
Blower motor is located on the firewall behind the engine.
Its part of the windshield wiper motor assembly. It unsnaps from the assembly for EASY replacement!
let a shop do it be cause it will has to be udjusted it will run about 60 dollars