1997 GMC Suburban radiator transmission lines

Hello cheatham777_ Happy new year You do not bleed tranny lines like you would for the brake lines and you did not do anything wrong installing the radiator. Here is what you need to know and what you need to do: For an automatic transmission to function normally, the fluid level must be between the "full" and "add" marks on the dipstick. If the fluid level is low, the transmission may slip or engage slowly. If the level is too high, the fluid can become mixed with air (aerated) causing shifting problems, slippage. Check the level when the transmission is hot, with engine idling and the transmission in Park. Moving the gear selector thorough each gear position prior to checking the level will help assure an accurate reading. Vehicle must be parked on a level surface or raised on a lift. Jacking up the front wheels will tilt the vehicle and give an inaccurate indication of the fluid level. Therefore, all FOUR wheels must be raised off the ground and the vehicle must be properly supported by four jack stands .