cciyu 3157 6SMD Chip Cree LED Bulbs 3156 3057 LED Light Bulb with Projector Replacement fit for DRL Light Back up/Reverse Light Parking Light Tail Light R-turn Signal F-turn Signal Light,4 Pack White Type of Lights: CREE LED chip build-in projector light with 6 3535 SMD Long-lasting Life - 50000+ working hours. Cross Reference: 3157 3156 3057 3047 3155 4114 4057 4157 3057A 3357NA Application: for 2000 2001 2002 2003 2004 2005 2006 Chevy Tahoe DRL Light Back upReverse Parking Light Tail Light R-turn Signal F-turn Signal Light 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.