cciyu 10 Piece Car RV Trailer White 3157 60-SMD LED Light bulbs 3057 3457 4157 Tail Brake Reverse Parking Light Replacement fit for 2014-2015 Chevrolet Express 2500 LED Type: Car 3157 Xenon White 68SMD Bulbs Lamps Long-lasting Life - 50000 working hours.Easy installation, just plug & play. Cross Reference: 3157 3057 3457 4157 3047 4057 4114 3156 T25 3057A 3357NA 3456 4156 3057 3155 335 Application: Tail Brake Stop Light,Also Great replacements for Turn Signal Light (need Load Resistor) IMPORTANT: Our bulbs come with Standard Base, NOT CK Type. Don't put standard bulbs into CK type sockets. It may pop the fuse or blow the bulb. Or the bulb will light up amber ONLY. Use a electroprobe to check where the two Positive Points locate in your stock socket.You can also buy a pair of standard sockets to modify the wiring.