its about 4 inches long and zig-zags. it looks to be stress. my truck has dark windows and stays under a carport at home and work. only in direct sunlight when im driving it or if its in a parking lot. the dash looks like it will come apart pretty easy i wonder if you have to pull it all the way out like your doing a heater core or evaporator core. or if u can take it off with out pulling it all the way apart.

 

have a crack on mine. its by the passenger air bag.

 

Damn seems like the later trucks had this problem more then the pre 05's That sucks

 

I'd bet it's related to living in a HOT climate. Most of these guys with cracks are in Texas, or some other state that gets hot as hell.

 

I have 2 cracks one on my passanger side and one on my driver side i hate looking at it!

 

Its a common issue with these trucks,sadly. My bosses Sierra cracked when it was only a few months old. I see it being more common with the ebony color interiors.

 

No cracks here, knock on wood. 140k miles, 9 years old and rarely sees a garage.

 

I bet the heat has a factor like Roger said and how well you keep up with the dash. Anything alcohol based to clean it might hurt it or any chemical that could dry it out.

I usually use a very small dab of leather conditioner when going over my interior.

 

My truck was in Dallas when it cracked and now I'm in Arizona, so the heat is likely a contributing factor.

Either way, it's disappointing and from what I've seen it's NNBS trucks 07+ that crack. My 05s never cracked and the 00 I have right now isn't cracked either.

 

Sounds like GM cheaped out on the material. Ive read the sheet metal on nnbs is thinner too.