Nice job man, you really didn’t miss anything based on the stated miles and model.There are a couple items you could do, if you want.
Drop some SeaFoam in the gas tank. I wouldn’t even worry about the fuel filter for another 100k.
Maybe clean your MAF sensor, just be gentle with it.
And in the spring, do a tranny pan drop. And fill with Dexron6 (I just say this because I‘m not sure when GM upgraded), with Dexron6 a cooler is totally not needed IMO. Just don’t leave the shop without checking the fluid level, and then check it again when you get home.
Also, you should be fine with the Dexcool, just use distilled water. I’m thinking the 04+ have better gaskets, but to be honest I’m not 100%.
