It's been a while......
 

Ive been out of the GM Performance world for A WHILE. I picked up a clean low mile 17 GMC Yukon XL Denali and am wanting to start giving her a little pep. What are some smaller mods I can do to get her to wake up?

Tuning it for starters.
Other than that I would just jump straight into an AFM delete.
Trans thermostat delete would be good too

What gear ratio? Probably get it regeared is gonna be a good value upgrade. Is it a 2wd?

Thank you- I forgot how much this addiction costs lol. I've gotta get a second job now