Corvette Parts Blog

This week’s Corvette question comes from Mike who owns a 1993 C4 Corvette.

How do I adjust the windshield wipers on my 1993 Corvette?

C4 Corvette Windshield Wipers

Despite their notoriety as a high-performance car and their innovations in design and technology, the C4 Corvettes had their fair share of imperfections. One common problem is with the C4 Corvette Windshield Wipers. Although only a minor flaw, the wipers on many of these Corvettes are not properly adjusted to rest beneath the hood when turned off. When the wipers do not park correctly, they can scrape the black paint on the window trim, resulting in unsightly scratch marks on the trim and blemishing the aesthetic appeal of the  vehicle. Fortunately, this minor problem can be easily corrected. All you need is a ratchet, 10mm socket, a flat-blade screwdriver, and no more than 20 minutes of your time. This simple adjustment will allow your Corvette’s wipers to rest below the hood line and prevent your Corvette’s window trim from being scratched again.

C4 Corvette Wiper Access Plate

After opening the hood of your Corvette, look in the direction of the wipers where you will see the wiper transmission access plate. Remove the plate with a flat-blade screwdriver by carefully prying up on it. Not all C4 Corvettes have this plate, if you don’t simply remove the entire grill. Once the access plate or grill is removed you will have access to four retaining nuts. Loosen them with a 10mm socket but be sure not to remove them as reinstalling the nuts can be very difficult. Last, gently push the wiper arms towards the firewall. You will need to adjust both arms to avoid interference between them. Adjust the arms until they do not hit the windshield molding or they are below the hood line.

Once you have your Corvette’s windshield wipers adjusted properly you can tighten them down. Be sure not to over tighten or you could snap the stud on the linkage. Now check the adjustment. Close your Corvette’s hood and have someone spray water on the windshield while you operate the wipers. (Don’t operate the wipers without water on the windshield or you could permanently scratch the glass). Make sure the wipers are no longer hitting the windshield molding. Switch the wipers to high to check that they are not contacting each other or binding up. If they are contacting, then readjust them until they no longer contact each other. The same applies if they are still hitting your Corvette’s windshield molding. Once your adjustment is satisfactory, replace the access plate or grill and your job is done.

C4 Corvette Windshield Wiper Adjustment, C4 Corvette Windshield Wipers, Corvette Wiper Blades, Corvette Wipers

Our 1973-1982 Corvette Wiper Compartment Cover adds the perfect finishing touch to any 1973-1982 Corvette’s cowl. The wiper compartment covers are made of ABS plastic and can be painted to match any paint scheme. Benefits of installing the wiper compartment cover on 1973-1982 Corvettes include:

1973-1982 Corvette Cowl Cover

• Provides a clean look over the stock cowl area
• Reduces the collection of leaves and debris
• Will not interfere with your Corvette’s wipers
• Can be painted to match your Corvette’s paint

Installation of the 1973-1982 Corvette Wiper Compartment Cover requires very little modifications. If you are going to paint the cover do so before installing. Once you are ready to install the compartment cover you will need to trim the trailing edge of the firewall, this is best done with a file. After trimming, install the cover to check for proper fit. You should turn your Corvette’s Windshield Wipers on and then stop them half way up by shutting off the ignition. Each wiper arm should then be run through the corresponding hole in the wiper compartment cover. The cover is then slid down onto the firewall. If the cover sits flush with the top of the firewall and the trailing edge rests tightly against the windshield, proper fit has been achieved.

Corvette Wiper Compartment Cover

If you would like to strongly mount the Corvette Wiper Compartment Cover, though it is not required, simply use four strips of adhesive backed velcro. Each strip should be approximately 4″ long and should be 3″ and 10″ from the side of the cover. If placed correctly the two front strips should fall directly on top of the firewall with the rear strips attaching to the windshield glass. If minor interferences are noticed you may have to file away the necessary amount of material.

C3, Corvette Windshield, Corvette Windshield Wipers, Corvette Wiper Compartment Cover, Corvette Wipers