how do i change a heater core on a 1991 chevy caprice?

Question

wit a 5.0 and it has ac in it how do i get the old one out and new one in

Answer 1

Welcome to the world of dashboard removal. Unless you want to pay someone $400 to do it, get a haynes and start disassembling.

Answer 2

You have to pull the entire dashboard, most likely. GM put the system under the dash starting in 1990 on their 1991 models. As a result, these are a four or five hour job. The best bet is to buy a service manual so you can make a more informed decision.

Answer 3

NATHANIEL G has some solid factors and covers solid areas even however, I extremely have considered heater cores in choose of replace via plug up. in maximum situations that's been on GM automobiles via loss of appearing coolant flushes. GM claims you could actually bypass 5 years or 100K miles formerly flushing the device out because of the fact dex-cool is meant have longer existence. all people thats been interior the corporation long adequate knows in any different case and thats why we sell to our shoppers that the coolant be means flushed as quickly as their GM guarantee expires. That stuff turns to gel and motives all varieties of problems. On a very final observe, NATHANIEL G stated you examine the heater administration valve. Thats extremely the 1st ingredient i could have checked, i will walk you thru it. Now i'm going assume that that's your in ordinary terms problem because of the fact which you weren't too particular with regard to climate or no longer the vehicle is extremely achieving working temperature. as quickly as your motor vehicle is totally warmed, detect your heater administration valve which must be in the direction of the firewall on your suitable section interior the engine compartment. Now bodily turn that valve to the alternative direction and carry it there on an identical time as somebody sits interior the vehicle with the heater on. Did heat air come out? If particular, then now you ought to make certain why; Is there a vacuum hose broken? etc. If no longer, thats the terrific i will do without you giving us extra records or perhaps then that's complicated to diagnose issues without bodily being there. solid success!

Answer 4

it is a massive job. You will to remove the airbox from under the dash and alot of other stuff. this is one job where it's really best to let a mechanic do it, imo.