why is my transmission saying hot when i get half way up a steep hill
just had rebuilt tranny put in 2 days ago. Shifts fine for the most part but when I give it gas to start the climp, rmps go up and only can do about 30-40 mph. its a 2005 gmc serria 4x4, 5.3 motor, please email me at arn96450@alumni.bloomu.edu or call me at 570-394-7325 and leave a voicemail and I will call back. no service where I work. any help will be appreciated. thanks in advance