I have a 03 Chevy Silverado 1500 4x4. I am am having a shifting issue where it won't go into 2nd without letting off gas. It would go into 3rd normally but no higher. I had a code for 1-2 shift solenoid, so I replaced both but it has same problem from 1st to 2nd but now it has 4th gear.

I don't know if this has anything to do with it but the abs light and brake malfunction light will come on after 40 mph.

 

I also tried spinning rear wheels in the air and it seemed to shift fine then.