Due to the complexity of the situation regarding the collapse of your fifth wheel causing the damage to your truck, you will need to submit the claim to your insurance company to find out if this falls under the terms of your collision or comprehensive coverage.

Once you have placed the claim your insurance carrier should assign an insurance adjuster who will investigate the claim and determine under what part of your physical damage coverage the damages fall.

If it isn't under your collision, it should fall under the comprehensive portion. Some instances are hard to determine without a full analysis by an adjuster.

Comment how it turns out so we can help future visitors.