Yes you do and its a pain
Check you battery
how does the horn pad come off an 89 riviera
take to repair shop. goto book store or library chiltons repair manual tells how.
drivers side just go under the car closer to the front tire and grab your wrenches and have at her
180-205.
under hood
Yes, if you really want to. You have to have a long enough hose
rmove the radio and it is directly behind it.
The PCV valve is located just to the right of the alternator...take off the 3800 cover (usually gray in color), and its behind the alternator and to the right of it, and you will see it popping out of the engine block right on the top of the engine case....its best to remove the alternator...u have to remove it to get to the pcv valve and replace it....
let a shop do it be cause it will has to be udjusted it will run about 60 dollars
Its part of the windshield wiper motor assembly. It unsnaps from the assembly for EASY replacement!
The 1990 uses a t50. The 89 is probably the same.