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1990 cadillac Seville replacing heater core - Cadillac Cars & Trucks

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: replacing heater core

  1. Allow engine to cool and release pressure from system, then disconnect heater hoses from heater core tubes, and plug hoses.
  2. Working in passenger compartment, remove glove compartment assembly.
  3. Remove seven screws attaching the heater core access cover to plenum chamber.
  4. Disconnect vacuum lines, then remove the cover with the vacuum harness attached
    1. Remove heater core from vehicle, Fig. 20.
    2. Reverse procedure to install.
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Posted on Jan 21, 2009

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blubanshee
  • 48 Answers

SOURCE: heater core replacement

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You have to remove the entire front of the heater case to change thecore. This usually looks a lot easier in print than it actually IS.Theinstructions say to remove the lower part of the dash for access; usually youdon't have to remove the entire dash for this type of service, althoughsometimes it makes things easier if you loosen and remove any components notmentioned in the procedure that are in your way.
This kind of repair can be frustrating, as it involves working in tightplaces and with 1/4 drive extensions and universal sockets to get all thefasteners out, but it IS possible.Here is what I have for the factoryprocedure. I don't know of any shortcuts to make the process easier; if you can'tget it off, perhaps removing the dash completely for more room would be aviable option...


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Posted on May 27, 2009

  • 115 Answers

SOURCE: how to change fuel pump 1990 cadillac seville

The fuel pump and sending unit is located in the tank. I hope your tank is empty, if not you will need to siphon it out. It is dangerous with the gasoline, and remember the fumes burn, not gas. You start by removing the filler hose, then loosen straps, detach sending unit wire and fuel line, then lower tank. Then unscrew the sending unit/pump and replace. reinstall.

Posted on Jul 05, 2009

  • 12 Answers

SOURCE: How do you replace a heater core in a 1991

well i remember that wonderfull day when i got my first heater core job at the Dealer it was a 91 deville. lets just say u never are a happy person when you have to pull the entire dash asm atleast back on the passenger to get the hvac case out of the car. if you havent done anything near that i would say it would take you maybe a few days to a week to finish it. icould do them now in about 6hr-8hr. so the dealer would charge about 1100-1300 bucks. ill do the job 4 6 hundred/ 562/587/8001

Posted on Feb 22, 2010

honeymokey
  • 3113 Answers

SOURCE: Dash lights in '90 cadillac seville not working

Most likley the instrument dimmer switch and that is part of the headlight switch, try wiggling it to get them on.

Posted on Apr 06, 2010

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Remove glove box to get better access. It takes a few minutes to unhook the vent tubes and heater mechanisms, but you will finally get to the point of opening the black plastic housing. 
There you will see the core. Remove the one bracket that is still holding the core and the two hoses from the engine side of the firewall. A little maneuvering and the core should come free. 
Note: A faulty thermostat can  cause  overpressure and apparently the heater core gives up first. 
Good luck and hope this helps.

May 05, 2009 | 1992 Cadillac Seville

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