1990 was before GM switched to using Dex-Cool extended life coolant, so any of the traditional green ethylene glycol or universal coolant/antifreezes would work perfectly. Any brand will suit the car well.
Purchase a repair manual at most parts stores, ( around $12 ) for detailed instructions on this and many other repairs.
no switch,fan control is determined by the engine control unit with input from the coolant sensor
Should be at the bottom or rear of radiator
Transmission control unit for a 1990 Pontiac transport?
The coolant temperature sensor on a 1990 Pontiac Transport is typically located near the engine block, often on or near the intake manifold. It is usually positioned close to the thermostat housing or near the cylinder head. To access it, you may need to remove any nearby components for better visibility and reach. Always refer to a repair manual for specific details related to your vehicle.
The 1990 Grand Am was a popular car. The curb weight of the 1990 Pontiac Grand Am was 2,739 pounds.
should be a little screw that is at the bottom of the radiator. if you can find it or it's too hard to get to then you can always disconnect the hose closest to the bottom of the radiator and drain it that way. It's easier and you get more of the fluid out faster.
Should be a plug at the bottom or rear side of the radiator
Pontiac.on.nimp.org That's should help you with the firing order. KOCKNMOUTH
yes it should bolt right up as well as the original motor and tranny
This information should be on the fan shroud.
Pontiac Trans Sport was created in 1990.