Stepside Bubbling Issue

[Kurt3]

So I want to get my truck repainted, but the problem is the shops around here that I have gone won't guarantee that this bubbling problem wont come back once they fix what is there now. They also said they have never seen a problem like this before. I don't want to spend all that money and have the bubbling come back in say 2-5 years.One suggestion is to get new stepside fenders, but they are becoming very hard to find because GM doesn't make them anymore.

Has any one seen this before? Mine and my dads truck are doing this but I only have pictures of mine. One more thing I should add is my truck has been repainted once already, the original colour is teal.

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[shortchevy]

looks like poor prep before paint?

 

[88GMCtruck]

My 88 is doing that bad. Most of those look like mine, they are from rocks flying up in the fender, creating a way for water and crap to get in eventually it creates the bubbles and cracks like your getting.

I also have a large crack in one wheelwell, and the step pads are stressed and cracking too.

 

[RHamill]

My cab corners are doing that, I'm not dumping a bunch of money to get it fixed, when it gets to the point where I can't stand it, I'll retire my truck to a wood hauler and swap my universal stuff over to another truck. (wheels, stereo, tonneau cover)

 

[88GMCtruck]

Well, cab corners are steel, the stepside beds are fiberglass.

 

[Kurt3]

88 GMC, can you post up a couple of pictures of your fenders, I'm interested in seeing how they compare to mine.

 

[shortchevy]

any problems with factory paint? or only on resprays?

 

[88GMCtruck]

Crap, I forgot to get you picts.

Mines factory paint.

 

[shortchevy]

Crap, I forgot to get you picts.

Mines factory paint.

just curious cause Im on factory paint
I want to see pix too, I redid a vette a couple years back with my dad and I know when fiberglass gets kit by stones it spiders but this almost looks like moisture or contamination on the surface before paint.

 

[OlSmokie]

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Did you ever find out what was causing this. My neighbors 90 is doing the same thing and it's getting worse. He thought that the undercoating might be reacting with the fiberglass