Good day all.

I was wondering what I could do about this. My truck ALWAYS wants to be in the highest gear regardless of speed.

I’ll be in 3rd or 4th gear before I’ve even completed a left turn at an intersection, when I should still be in second.

I did buy this truck used back in 2021. It came from the dealer with some unusual modifications, mainly, I mean it’* a 2wd truck and it has 33” tires (oversized), and 20” wheels (GMC badged).

Otherwise it’* completely stock. I got the Edge CTS3 programmer to fix the speedometer/odometer and turn off “active fuel management” (which was a God awful failed experiment).

So my main question is, can I do anything to manage the low shift points of my transmission without a major overhaul? Ideally I’d like it to shift to the next gear no sooner than 1800RPM each gear.

Any help would be appreciated.

Has it done this since you bought it in 2021?

Are there any error lights on in the gauge cluster?

How many miles on it?

How many miles have you owned it?