Referencing the 1997 Tahoe Owners Manual Index under fuses refers you to section 6-63; pages 6-63 to 66 show the location and layout of the fuse panel (access panel is on the drivers-side of the dashboard - on the side of the dashboard instrument panel; door has to be opened), and a description and layout of all the fuses therein. AC Blower (etc.) is fuse 12, probably 25A.
Its located on the passengers side behind the glove box right next to the blower motor......
it is behind the right plastic panel in the cargo area
The Heater/Blower Relay is on the blower motor housing under the dash in the passenger compartment on 1999-2002 models
behind the glove box that is where mine is on a 1996 Tahoe
The blower motor is under the glove compartment
Right next to the blower motor
the blower motor relay is located next to the blower motor it is connected to the motor by a purple and black wires
Should be near or attached to the blower motor
Under the hood. In the blower motor harness connector.
Try on top of the blower motor behind the glove box
its next to the blower motor behind lower of glove box
under the dash