This is not related to your survey specifically, just some common sense guidelines to follow.
If it is the factory survey, it is mostly rating how the dealer performed. Blasting the dealer for a problem with the truck just pi##$% the dealer off. The factory puts a lot of pressure on the dealer to get the good surveys returned. The way I always looked at it, if your mad at the dealer for something, give him a chance to make it right. If he doesn't, then rate him accordingly on the survey. The other important thing is don't kill the dealer and not include comments to back up what you say. The dealers get ALL the surveys back, so you might as well give constructive feedback in case he really does want to be the best he can be.
On the other hand, if your mad at the product, write or call the customer service line. If it is not the dealers fault, still giving him a good survey might pay off when you need something down the road. Believe me, they have great memories of who gave them a bad survey when they really didn't deserve it.