my brake lights and reverse lights work together.right blinker makes rev blink. on 2002 Chevrolet Silverado 1500

have added frame and body grounds to tail lights and it still does it help!

Asked by for the 2002 Chevrolet Silverado 1500
1 answer
Tail light circuit boards give some trouble also trailer wires (if equiped) check for moisture, damaged wires also.