Want this question answered?
Need to know what code(s) were set and which O2 sensor you changed in order to help you.
The 1989 Buick Park Avenue does not come with a remote keyless entry. The keyless remote entry was not available till 1997.
Inside the alternator.
by your mom
Need to know what engine it has.
89 Buick park ave install a heater coil
I believe they are 3/16"
That is the knock sensor
As you are looking at your truck from the front the knock sensor shoud be on the passenger side right under the manifolds
to the rite and just below the coil
it is located on the side of the engine block.
For model year 1989 General Motors did not produce the Buick Park Avenue. The soonest production date to 1989 was the 1991 Park Avenue. The 1991 Park Avenue was offered in 3800 engine in supercharged or naturally aspirated. The part numbers for electronic control module (ECM) or "computer" will vary based on the exact engine for model year 1991s.