I was curious about the fuel gauge because mine says Diesel Only. I've seen the 6.7 trucks that say Ultra Low Sulfur Diesel Only.

I know inside the 6.7 SLT trucks the dash is different than the 5.9 trucks. The 6.7s don't have the "wood" inserts if it's an SLT. At least that's the way the ones were I drove.


That's pretty cool, I wouldn't have minded picking one of those up

 

Some of the late 2006's also have the same ECM as the 2007's. These were some of the changes they made before bringing out the 6.7. You can look on the fuse box and see where some of the fuse labels are for 6.7 specific stuff. The one I remember most on mine is the fuse location labeled for the variable geometry turbo on the 6.7.

 

My 07 5.9 SLT does not have wood trim either. I hated that on my 06. My 07 has brushed aluminum trim.

 

What does TST stand for?

 

I think it's brushed plastic.

fog light indicator on the dash is different from 06 to 07 too.

 

TST is a company started by Mark Chapple, a retired Cummins engineer, that makes power upgrades.

I believe Dieseljunky is about a year off as the changeover started about midway through 06. This is evidenced by the TST page stating that the TST will only sell the Powermax for trucks built up through 06/06.

http://www.tstproducts.com/

 

I guess they are a mixed bag then because a couple 5.9 07's I drove in SLT trim had the wood.