Turn signal switch/Bright light switch

[lanconcj]

My 1986 Silverado has the switch for bright/dim on the turn signal lever along with cruise control and wiper blade on off settings. My headlights are stuck in the high beam position and will not switch back to dim. I have read topics here about removing the turn signal switch so I know how to get it out. I am wondering if the bright/dim switch is built into the turn signal switch also. If I buy a new switch and replace it, will this fix my problem. i have been driving with only brights for 1 month, my highway peers are getting impatient.