The tail or brake lights may be dim due to a poor ground connection inside the light socket. Failed light sockets will require replacement.
Car Problem Reports
Chevrolet Camaro Dim Tail or Brake Lights Due to Faulty Light Sockets
Chevrolet Camaro Problem
Visitor, 1997 Chevrolet Camaro, 125,000 mi
Passenger side Tail light dim, dealership thought it was electrical,yet only replace the bulb.Was dim with in 24 hours.