2003-2007 Genuine Original Factory OEM Cadillac CTS Xenon Headlights Headlamp Ballast (LED Light Control Unit / Module / Controller / ECU / Computer / Starter / Electronic Unit / Steuergerät /Inverter ) , LED Bulb Lamps, Headlight Lens Cover Plastic Lenses Yellowish Scratched Lenses Crack Cracked Broken Fading Faded Fogging Foggy Haze Aging Replacement Sale

Ps: 2003-2007 Cadillac CTS have two tyeps ballast 4pin and 12pin .so you need comfrim i t ,you car used which tyeps.

Part will fit : Driver side / Passenger side / Left / Light / Front

Cadillac CTS : 4-door sedan , 2.6L 2.8L 3.2L 3.6L V6 , 5.7L 6.0 V8 , Sport Sedan / V Sedan / Coupe / V Coupe / Sport Wagon / V Wagon

2.6 L LY9 V6
2.8 L LP1 V6
3.2 L LA3 V6
3.6 L LY7 V6
5.7 L LS6 V8
6.0 L LS2 V8

If your 2003-2007 Cadillac CTS OEM Xenon Headlight low beam or Headlamp high beam have problems or Angle Eyes , daytime running lights DRL LED turn signal , like light failed failure, flicker , dipped beam very dim dimmer, getting dimmer, not working, burnout , flickering blinking , goes one and off , keeps going out , flashlight , making noise , not bright enough , not focused , stopped working , turning yellow and the dashboard displayer have warning light , error code , go up and down , moving up and donw , pointing down , distance control defective , malfuncation ,turning pink , not turning off , gone ping , turned purple ,turned pink , not bright enough , flashing , warning light ,not working properly , keeps burning out , have any other fault issues, you only need to change or replace related original led parts like: ballast, led bulb, control unit module , reflector , igniter , or wire harness cable to repair and fix your Xenon headlamps is ok, no need to cost a lot of money to buy a whole brand new headlight assembly like the car dealer suggest.

Normally speaking, when your headlight have problem, check out the fuse first, if it’s ok, then replace the factory fit xenon control unit box ballast is ok, because from our many years experience, when the headlight not work, 90% of the problem is on the ballast.