hi guys, new to the forum. i have a 04' silverado 1500 5.3. i read through a bunch of stuff on here and have an idea what my problem is but would like ur thoughts on it. recently my tranny has been slipping from 1 to 2nd under normal driving conditions but if i stand on it, it shifts just fine. so i need more pressure and every couple days i notice it from 2-3. so i need a vette servo or tune. if you could give me a direction to go and it would be greatly appreciated. also i couldn't fine a write up on the servo install.
thanks for any help