Trans slips when it goes to 3rd

[HUM GOOD]

Originally Posted by tattoou

My tranny started slipping today while shifting from 2nd to 3rd, its like the solenoid isn't pushing it in 3rd, 1st and 2nd are fine then around 40mph the revs go up when it comes out of 2nd and then nothing, had to drive home in 2nd. Fluid is full and red, looks good, Is there a fuse or something for the shift solenoids ??

mine did this at 40,000. hopefully your still under warranty.
Are you? If not call hummer directly(corporate), they may help with some.