How do you replace a heater core in a 1990 Chevrolet Corsica?
it is located under the dash in the middle right on top of the frame or trany hump there is a black case on the outside with if I rember right 4 screws holding on to the heater core case them the should be 4 to 6 screws to take the 2nd plate off at theis point if you hace big hands or larger arms call closest friend cheapest help to crawl under car and take of the spring hose clamps or possably hose clamps befor you start all this you should have drained the coolant take both hoses loose the go back to under the dash and there should be 2 core brackets holding the heater core in eith 4 screws try to rember which way it came out to you can get the new one back in put back together in oppsite order make sure you use new heater core hose clamps
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NO, YOU CAN ACCESS THE HEATER CORE DIRECTLY BEHIND YOUR CENTER CONSOLE, IT'S NOT EASY DUE TO THE ANGLE YOUR BODY MUST BE IN TO ACCESS IT. MORE CAN BE LEARNED IF YOU SIGN UP FOR ALLDATA.COM, ONLINE TECH MANUALS FOR A YEARLY COST. IT'S WELL WORTH IT. No you dont. Its just a couple panals on the underside of the dash on the passenger side/center console.
I do a lot of work in cars when i can and this a job you do NOT want to do yourself. they all go bad on these cars. mine went out in '05 on a '93 i have. it is up under the center console and literally the whole thing has to come out. unless your a professional mechanic there are just too many things that can go wrong.
It is never easy to replace the heater core on any vehicle. The problem is getting to the core. That is why this is a very expensive repair. It is a labor intensive job. It is never easy to replace the heater core on any vehicle. The problem is getting to the core. That is why this is a very expensive repair. It is a labor intensive job.
If its just the cord, then follow the old cord to the back side of the engine ( really the side of the engine closest to the firewall ) and replace it. When the engine is cold, plug it in and you will hear the block heater heating up. If you don't hear anything, then replace the heater also. That requires a little more knowledge.
If it is like my 1990 Chevy Corsica, I removed the black plastic cover under the center of the dashboard (below the radio etc.) Then remove the screws for the black plastic drip pan; you may need to pull straight away from the fire wall since that is where the drip tube exits. Then remove heater core bracket and screws. [I removed my core to replace the core's cracked hardplastic tubes that also pass through…
1- Drain coolant. 2- remove heater hoses from core inlet and outlet pipes in engine compartment. 3-remove screws and heater core cover. ( right side lower passenger compartment ) 4- carefully lower core out of heater unit. This old of a truck it would be wise to replace both heater hoses. Use antifreeze as a lubricant to install heater hoses to new core inlets.
I had to replace my block heater on my 89 Accord and the plug/location for the heater is in behind the distributor. I had to remove the distributor from the engine block and then removed the old block heater. It is an easy do it yourself job but you have to be carefull to reinstall the distributor exactly the same way it came out. .