help please

my blazer 1985 S-10. The belts squeel when i start it. they squeel when i slow down to a stop sign and they squeel when i turn on the heat. if u have a answer or need more info pleaes let me know. i would really apprecieat it thanks.:)

My friend has a 74 bronco says tighten up the belts
cause his bronco did the same thing

or if that doesnt work get a new one

i have no clue but this what my friend says i dont know shit about american cars:bloated:

Just tighten the belts, or replace them, if that does'nt solve the problem completely buy some anti squeal and spray it on the belts.

i vaguely remember something about using a bar of soap to make it stop squealing, but that doesnt seem very effective to me... maybe im wrong.