greystone

Sounds like a dirty MAF. check the sensors on on the MAss Air Flow sensor. They make cleaner just for it.

I just did the Rancho quicklift. Raised it a bit more than expected. I am hoping to keep the factory UCA on my 17 Z71. However, they are hitting the drop stop on big dips in the road.

well dang... you're right. I thought it was staying off. I guess I can't explain the recent good behavior of my transmission.

no it will remember the setting

Something I discovered recently. If you hold the tow/haul button for 3 seconds it will toggle on and off the grade shifting feature. Mine was on by default. I have turned off the grade shifting and have since noticed a significant improvement in transmission performance. Especially during deceleration. The clunkiness is almost completely gone. Give it a try.....

IS the truck completely stock? AFM on and no catch can?

Not sure if anyone else has this happen. When I use remote start the rear defrost comes on automatically. It doesn't matter what it is set to in the remote start settings. Currently I have it set to off but every time I use remote start the it lights up the button for rear defrost. I always have to manually turn it off after I start going. Sometimes I don't remember and it just stays on and I notice it 30 minutes later when I get home.