it should be on the bottom engine side of the radiator opposite the lower hose. you may need to remove the plastic sheilding from the bottom to get to it
To replace the heater core in a 1990 Buick LeSabre, begin by disconnecting the negative battery cable and draining the coolant from the radiator. Then, remove the dashboard and the center console to access the heater core housing. Disconnect the hoses attached to the heater core, remove the mounting screws, and take out the old core. Install the new heater core by reversing the removal steps, ensuring all connections are secure before refilling the coolant and reassembling the dashboard.
inside the radiator hose
through the overflow bottle
I paid $500 to get it replace.
Drain the radiator, disconnect all hoses from the radiator, remove the fan shroud, loosen all radiator mounting brackets, remove the radiator. Replacement is the opposite order.
To replace the radiator on a 1990 Cadillac Brougham, start by disconnecting the negative battery cable and draining the coolant from the radiator. Remove the upper and lower radiator hoses, as well as any mounting bolts or brackets that secure the radiator. Carefully lift the old radiator out, then install the new one by reversing the steps: secure it in place, reconnect the hoses, and refill the coolant. Finally, check for leaks and ensure the system is properly bled of air.
The 1990 uses a t50. The 89 is probably the same.
fuel filter location in 1990 buck lesabre
20
I have a 1990 lesabre and im 90% sure its a 16 gal.
follow the upper radiator hose other end is connected to thermostat housing