Those cracks look too uniform to me to not have been made that way. However, I just went and looked at my 2009 Tahoe and it does NOT have them. The exhaust manifold bolts on these engines are notorious for breaking, too.
I've had 4 Suburbans and 2 Tahoes. The Tahoes are much easier to park, but for highway driving the extra wheelbase and the slower steering gear of the Suburban makes them much more enjoyable to drive. The Tahoe steering is just too light, too touchy. They want to wander much more than the Suburban, and I don't think it would be as good for towing a boat. The extra storage capacity of the Sub makes it ideal for all the extra stuff you need when you go boating.
By the way, I paid $22,000 for my '09 Tahoe about 3.5 years ago. It had 92,000 miles at the time. I think it has about 145K now, it's my wife's car. I've put tires, a battery, new headlights, and a rear bumper cover on it. (I'm going to give up on the rear bumper--it's been hit THREE times since I replaced it a couple of years ago). The outside mirrors are another weak point. They will fail eventually and they're ridiculously expensive if you buy from the dealer. Here's a link to an aftermarket upgrade: http://www.gruvenparts.com/gruvenpa...-2007-2014-gm-trucks-folding-mirror-assembly/
Good luck in your search!
I've had 4 Suburbans and 2 Tahoes. The Tahoes are much easier to park, but for highway driving the extra wheelbase and the slower steering gear of the Suburban makes them much more enjoyable to drive. The Tahoe steering is just too light, too touchy. They want to wander much more than the Suburban, and I don't think it would be as good for towing a boat. The extra storage capacity of the Sub makes it ideal for all the extra stuff you need when you go boating.
By the way, I paid $22,000 for my '09 Tahoe about 3.5 years ago. It had 92,000 miles at the time. I think it has about 145K now, it's my wife's car. I've put tires, a battery, new headlights, and a rear bumper cover on it. (I'm going to give up on the rear bumper--it's been hit THREE times since I replaced it a couple of years ago). The outside mirrors are another weak point. They will fail eventually and they're ridiculously expensive if you buy from the dealer. Here's a link to an aftermarket upgrade: http://www.gruvenparts.com/gruvenpa...-2007-2014-gm-trucks-folding-mirror-assembly/
Good luck in your search!