Chevy S-10
Heater Cores and Blower Fans
Buick Riviera
Chevy Blazer S-10

How do you change the heater core on a 1991 Buick Riviera?


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2006-02-05 19:57:33
2006-02-05 19:57:33

Try the repair tips on the Autozone web site.


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Probably a worn-out or clogged heater core.

Underneath the car, drivers side, generally in front of the rear tire. Compare the old filter with the new filter, and you will be able to verify it.

I am having the same problem and I WA told it was the heater core. I am going to give that a shot. Autozone has them for $30.00

Type "1991 Buick photos" into your search engine. If you are interested in a particular Buick Model then add that model such as "1991 Buick LeSabre photo".

It goes in where your dipstick is in the back of motor compartment

Depends on what type of 1991 Buick you're referring to...

Depends on what model Buick...

The dash must be completely removed in order to gain access to the heater box. Then the heater hoses are disconnected and the heater box is removed and opened up. That gains access to the heater core for relacement.

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