When you say "do a good sanding job", what exactly do you mean. Do you mean going down to bare metal?

The problem with the paint is that it was a waterborne base paint & primer system. It was one of GM'* first attempts at using it & they failed horribly.
It is not something that is going to go away with a touch up job, it needs to be stripped down if you wont to do it right. You can get away with blending in on the sides of most cars as the top is normally the only affected area. But honestly being that I have re sprayed several of these cars it'* best to strip all of the Base/Clear off & start fresh.

I have a 2005 Bonneville SE and the paint is starting to peel on the bumber. Is there SB or a recall or a class action lawsuit out for this defect.

My 1999 Buick Regal has started peeling paint in big sheets. Is GM going to do anything about this?

you can call the customer service number but i doubt they will do anything for a car that is 15 yrs old

I thought only the mid 94-95'* did that? Like my 95 white curse peeled like a bad sunburn.

looking around online it seems there were all sort if different gms with the issues in the late 90'* and early 2000'*. i found one post that said they were fist starting to use the water based pain at this time and it wasent working so good. my 98 bonnie and 99 yukon dont have any flaking though, actually they seem to be pretty solid.

Yea, I had heard it had something to do with a bad batch of primer GM got in the mid 90'*, and the white paint was really susceptible to peeling because it couldn't bond to the primer.

Saw a couple of comments about the need to strip off all the old paint. That old 2007 OP resembled my '94 LSS paint issue exactly. I'd be driving in the rain and see a flash in the rear view mirror, and realize another sheet just peeled away.

So in '04 I had a body shop lightly sand the exposed primered areas (and feather at what was left of the paint) and repaint the hood, roof, trunk, and the tops of the front fenders to the pinstripe. 500 bucks.

That paint never peeled again. However (of course), the paint at the top of the doors and the rear quarters started peeling over the years. So just before shipping out of Romania, I had the entire car painted again for 1200 bucks. Can you believe they don't have pin striping in Eastern Europe? WTH. Anyway, they did not strip all the paint, but did the same feathering at the leftover paint.

I guess the point is that it wasn't necessary to strip down to bare metal, at least in my case. Here'* a couple of pics of the car at the time the shipper was inspecting it prior to loading it up. (Those are tree limb shadows)

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