Transmission Problems 1st->2nd->1st

[YukonPayton]

So long story short, after doing donuts in the snow, my transmission started to act up. I have a 2001 GMC yukon with the 5.3l and 4wd. I had the transmission rebuilt in April 2017, so not thinking I thought the transmission would be fine for 45mins of donuts in the snow. But I was wrong.. So my symptoms are that instead of shifting into 3rd or OD it shifts back into 1st gear. I know i am an idiot for actually trusting my 4l60e. But I tried. Side note, replaced --Filter--Fluid--Shift Solenoid A&B--3-2 Downshift solenoid--

 

[inmypassatlife]

Life lesson will be earned from this

 

[Sam Harris]

Ouch. That sucks

 

[SnowDrifter]

Ugh talk about a bummer. I knew these things were weak, but seriously? Crapping out after some donuts in the snow? That's just wrong...

 

[swathdiver]

You ought to hook it up to a Tech-2 and run some tests on it before throwing a bunch of money at it.