1990 radio turns on but no sound
My radio turns on but no sound. The antenna does not raise, so maybe if I replace the motor on the antenna then it will work?

The 1990 Chevrolet Corvette is best remembered as being the base model for the new ZR-1, the "Super Corvette." After many production delays, the ZR-1 was released at a price hovering around the $60,000 mark, almost twice the sticker price for the base model. Dealers were rumored to be getting over 6 figures for some of these cars.
And what did consumers get for their double-Corvette price tag? The 3,049 owners lucky enough to be able to buy one received an all-new drive train; the all-aluminum 350-ci LT5 V8 went from 0 to 60 in 4.3 seconds and was rated at 375 horsepower. It was available only as a coupe, and had a wider tail section and wheels than the base model.
The base model for that year was a 5.7-liter 350-ci V8 rated at 245 horsepower.
My radio turns on but no sound. The antenna does not raise, so maybe if I replace the motor on the antenna then it will work?
How do I access my account?
When I park my 1990 Corvette Convertible, turn off ignition, courteous lights in both doors, foot pans and rear storage remain on. will stay on until battery is dead. Have temporarily removed fuse. Any idea what the problem might be.
My oil pressure is between 60 and high 70s on high about 50 in idle, is this normal? 1990 c4 corvette 87k
Air Conditioning
Automatic climate control front air conditioning
Airbags
Driver side front airbags
Audio System
Antenna Type: power · Single disc in-Dash CD · Premium Brand: Bose · AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Steering wheel: tilt-adjustable
Mirrors
Exterior mirrors: heated
Roof
Convertible roof: targa roof · T-Tops: glass
Seats
Front seat type: bucket · Upholstery: leather
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Airbags
Driver side front airbags
Audio System
Antenna Type: power · Single disc in-Dash CD · Premium Brand: Bose · AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Steering wheel: tilt-adjustable
Drivetrain
Limited slip differential: rear
Mirrors
Exterior mirrors: power
Roof
Convertible roof: hard top
Seats
Front seat type: bucket · Upholstery: cloth
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent
Air Conditioning
Automatic climate control front air conditioning
Airbags
Driver side front airbags
Audio System
Antenna Type: power · Single disc in-Dash CD · Premium Brand: Bose · AM/FM radio
Brakes
ABS: 4-wheel
Convenience Features
Steering wheel: tilt-adjustable
Drivetrain
Limited slip differential: rear
Mirrors
Exterior mirrors: power
Roof
Convertible roof: targa roof
Seats
Front seat type: bucket · Upholstery: leather
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: intermittent