It is very expensive but there is a noticable difference, especially stopping distance.
A torque wrench was used whenever the wheels were off and no harsh braking as noted above. Just normal use in RI.
The rotors should not have warped in 20k.
I have been told the chinese metal used in the rotors does not like temp extremes.
Just another issue with he truck, which I still like very much. But GM could still do better by its customers.

 

I had not planned on doing the rotors, but I will inspect them when I do the pads...

No, 99% of places don't bother 'turning down' rotors any more, as to turn them down is like $60, while new ones are like $100 (or whatever)... so price wise, it doesn't make any sense...

I will explore higher performance rotors when mine wear out.

However, most (this is generally, and not 100% true) slotted / cross drilled are better at removing heat. which means they can take repeated stops without losing stopping power... HOWEVER the trade off is that you might get (round, general numbers here) 35-40,000 out of them vs 50-80,000 for 'normal' rotors... the lack of material makes them wear out faster... simple fact.

Just light those super bright headlights I put in the wife's car... SUPER BRIGHT, awesomeness... then... they burned out every 6 months... F' that.... went back to the 'normal' ones...that last FOUR YEARS...

If you need the stopping power, and don't mind the price, and more often replacement, go for it. but for every + there is a - trade off...

 

I put power slot rotors and hawk pads on all 4 wheels and replaced the lines with steel braided ones. Over kill yes. Worth it to me.
Gone 30K + and no issues. Minimal dust as well.

 

Are you talking about HIDs or something like Sylvania Silverstars?

 

I put the PIAA low and high beam bulbs in in 2008, have yet to have a burn out.

 

Sylvania Silverstars i believe. the highest ones, there bluish, look great... burn out in 10 minutes... waste of $.

 

Yeah if you read on the package it tells you the Sivlerstars are rated at 250hrs where as the standard bulbs are rated at 500 or 550 hrs....
I put them in the little womans mini-van and they do look nice but I also put the old bulbs in the glove box for the inevitable....