Gen 2 performance upgrades?

Looking to see if there have been any performance upgrades specially range related that have been found

Also any general use enchantments would be interested in as well.
Not talking your tire pressure or drive this way kinda things either

Have a 2018 lt trim volt have owned it lil over a year most of mileage had been on the engine not EV according to the app only about 35k of the world 110k miles have been on ev

I live in Michigan so cold winters. And do not have a garage to park it in at my house i consistently get 33-35 miles estimated range even with these below 0 temps we've been getting lately

Most of my daily driving is 55+mph zones to and from work or if I'm running to town for errands

Already ceramic coated and rust protected it and under body protected it when first bought it

Have had no shift to park or bcm issues New tires at purchase at about 86k miles. Coming up on first oil change since had dealer do it for purchase.

Already did a Bluetooth single for Android auto

No don't plan on using OnStar it's not worth the monthly price