outside rear view mirror

[ecooper72]

so i have a 2003 sierra and the signal and defrost went out of the passenger mirror, so i bought a new glass and the signal didnt work, so i returned the mirror and got to looking into a whole new mirror. i looked at my build sheet and it says i have power folding mirrors, which i didnt know ! i bought the truck used. once i recognized this i tried to fold them in and it didnt work. the production code in the glove box says i have DL3 mirrors. so after all this i just want to know if i have power folding mirrors and maybe there broken? any thoughts or advice and maybe the best place to get new mirrors or mirror

 

thanks