1992 LCD/Speedometer
Flashing on/off/full screen/partial screen and sometimes I get "sys" on the radout. What's the cure?

The 1992 Chevrolet Corvette had a new second-generation LT1 engine, which would remain the Corvette standard for the following four years. It was a 5.7-liter, 350-ci V8, rated at 300 horsepower. The new engine in the aerodynamic C4's were extremely popular and very fun to drive.
The ZR-1 retained the power in the family, with its 5.7-liter LT5 V8 rated at 375 horsepower. Chevy did not change its ZR-1 from the previous year, and only 502 were built and sold.
Flashing on/off/full screen/partial screen and sometimes I get "sys" on the radout. What's the cure?
I am having trouble putting the top down on my 1992 Corvette Convertible and I know to release it from the two sides at the windshield and I know of the yellow button that I push to release the back portion, but the back of the window is bolted and I can't release it or pull it up. Thanks for your Advice.
i have accepted a bid for my 1992 Vette and have offered two payment methods to the "buyer" who has not responded to my e-mails. Do I have any recourse? Does this happen frequently? Is this a scam?
I have a 1992 Corvette 5.7 . The brakes have started to feel kinda spongy where sometimes I need to pump them slightly to get them to feel strong and firm. After driving for 30 minutes the other day the brakes went all the way to the floor and had no real stopping power. I had to drive home at 20 mph just so I would be able to stop. I tried the car in my driveway yesterday just to see if the breaks were still to the floor and they felt high and strong. I don't want to chance it by driving it again but not sure what I should replace. The break fluid is still full in the reservoir and there are no visible leaks at any of the wheels and master cylinder. I am guessing it is either the master cylinder that is failing or the power booster. Should I replace the master cylinder first or take the car in and let a mechanic diagnose the problem? I am comfortable replacing the master cylinder but not the power booster.