Engine Fan broke near the bolts. Replaced fan and clutch also had to replace water pump. Went through 2 more fans and one clutch. Has anyone had this problem? Was told possible warped water pump spindle. Is there a problem with changing to an electric fan, and has anyone done this?

Yes I do use the 4x4 on occasion and I pull a trailer.

98 4.3vortec 4x4.

What brand parts are you using?

OEM Parts.

AC Delco?