To replace the heater core on a 1990 Cadillac Brougham, start by disconnecting the battery and draining the coolant. Remove the dashboard and the center console to access the heater core, which is typically located behind the firewall. Disconnect the hoses and any electrical connections, then unbolt and remove the old heater core. Install the new heater core by reversing the disassembly steps, ensuring all connections are secure before refilling the coolant and reconnecting the battery.
1800oldjunk
To replace the heater blower relay on a 1990 Cadillac Fleetwood Brougham, first disconnect the negative battery cable to ensure safety. Locate the relay, which is typically found in the fuse box under the dashboard or near the engine compartment. Remove the old relay by gently pulling it out, then insert the new relay in the same position. Finally, reconnect the battery and test the blower to ensure it operates correctly.
What is the bolt pattern on a 1990 Cadillac Fleetwood brougham 350
See if your public library has a Chilton's book for your Cadillac.
No
http://www.modifiedlife.com/1990-cadillac-brougham-car-radio-wire-guide/ this might help im having the same issue
Fishing string
In a 1990 Cadillac Brougham, the drain for the heating system is typically located at the base of the firewall, where the heater core is situated. It can sometimes be found near the passenger side, where the heater core hoses connect. If you're experiencing drainage issues or leaks, it may be necessary to inspect the area for any blockages or damage. Always refer to the vehicle's service manual for specific details and diagrams.
comes out inside . remove glovebox and go in that way . about one hour .
Where is the ecm located on a 1990 cadilliac brougam
Voltage regulator is located inside of the alternator.
60 persent