Most are badly rusted and are not usable! A small metal plate was once used to secure the red taillight lens and clear back up light lens against the long gasket that fits inside the taillight housing. A machine screw pulls this plate against the two plastic lenses behind the reflector to stop inside water leaks.
When the metal plate deteriorates, water seeps inside the lens (particularly the lower clear back-up light lens) keeping the gasket always wet and in colder climate freezing any water accumulation.
We recently received an excellent original used plate from Scott Phaneuf of Hatfield, MA and we are having them reproduced just like GM’s.
NOTE: Check your Chevrolet Cameo or GMC Suburban carrier taillights. This metal plate is important to prevent lens and gasket deterioration!
We will soon offer these plates and machine screw. This screw threads into the large housing behind the red reflector. Available in late May 2016. Call and order now with no money down. When they arrive you will be invoiced! Cost per pair $6.90 + postage, Part # MS527