Dummy Light Question 1996 K1500 EXT

When I bought my truck I realized that a few of the dummy lights were blown out, in particular the Check Engine light and the E Brake light. I had no further problems with the lights. Then I stored the truck for a year and a half and now the Check Engine light and the High Beam guage lights are blown out. My question is, is it normal for dash lights to go bad and need to be replaced or may I have an electrical problem?