Stepside fenders

[BigAl285]

I was wondering what years did gm make fiberglass rear fenders? Just only come on dually boxes or regular step side boxes get them also in certain years? I know the two fenders are different also.

 

[J Knight]

All stepside fenders are metal from the beginning to 1987 then fiberglass from 88-06. All dually fenders are fiberglass.

 

[BigAl285]

Thanks