Location of heater core on 1988 cadillac fleetwood delegance

is your car running at normal temperatures? possibly bad heater core. the flaps that direct the air flow in the vents may not be working properly. and has it always had this problem you may want to see if someone has bypassed the heater core there are two coolant lines going into your firewall right next to each other. sometimes when the heater core goes bad people will do this to get by but if youve had heat before than this off course would not be the problem

BROUGHAM

1. Disconnect electric-al connectors at blower motor, compressor cycling switch, power

module and radio lead-in connections.

2. Remove righthand windshield washer nozzle.

3. Remove righthand secondary air inlet screen from plenum.

4. Partially remove rubber molding above plenum.

5. Remove remaining screws and the primary inlet screen.

6. Remove blower motor.

7. Remove two screws securing compressor cycling switch to module and position

switch out of way.

8. Remove AC module cover attaching screws and the cover.

9. Disconnect heater hoses at heater core.

10. Remove screw and retainer holding heater core to frame top.

11. With temperature door in max. hot position, reach through temperature housing and

push lower forward comer of heater core away from housing, then rotate core

parallel to housing.

12. Remove heater core.

13. Reverse procedure to install.

IT UNDER DASH PULL HEATER BOX

Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

The heater housing is disassembled to get to the heater core. Heater Core

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Check this for...

1988 Cadillac Fleetwood Brougham 5.0 liter V-8 VIN "Y"



1988 Cadillac Fleetwood FWD 4.5 liter V-8 VIN "5"



Hope helps and remember rated this. Good luck.

flush your system the heater core may be clogged hope this helps

your blower motor would be located on the front passenger side underneath the dash

do the heater core coolant supply hoses both get hot at the firewall in the engine compartment? if yes then you have a defective temperature control blend door actuater motor.

I,M HAVING TROUBLE REMOVING THE COVER PLATE FROM THE HEATER CORE.

passenger side under the dash... tho there is a chance it's mounted on the passenger side inside the engine compartment