Update: I just installed a pedal commander in my Tahoe (5.3). I’m still dialing in my favorite setting, but so far I think it’s fantastic. The throttle response is much more linear in nature and the lag is almost 100% eliminated. It makes for a much more enjoyable driving experience.
If you sign up for emails on the pedal commander website they occasionally offer $50 off promo codes, bringing the price down to $250. In my opinion it’s well worth the price.