1989 Chev Key Switch Problem

Discussion in 'Trucks and Trailers' started by ed2hess, May 27, 2012.

  1. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,140

    What kind of a problem do I have to replace the key lock cyclinder on a 1989 chev pickup. Can't turn the key. I have experience some experience with Ford replacement. I will get the book but wanting an idea of whether this is 1 hour job or half a day.
     
  2. dieselss

    dieselss LawnSite Bronze Member
    Posts: 1,631

    Little of both......gotta slide hammer out the old lock cylinder.....if it breaks the coloum...then like hole day job to replcace the coloum
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  3. 32vld

    32vld LawnSite Gold Member
    Posts: 3,984

    Simple job.


    Remove horn pad.

    Remove lock ring then nut on end of steering column.

    Then will need a steering wheel puller set.

    First use tool pull the steering wheel off the column. Then use the second part of the tool set to press down plastic plate that covers directional switch so pressure against another lock ring is removed and that lock ring is popped out of the groove on steering column and removed from the column.

    While since I did one. Once plastic plate is removed you may have to remove directional switch screws so you can move D switch out of the way so you can remove fastener that holds the key cylinder in place.

    Then just pull out the key cylinder.


     
  4. dieselss

    dieselss LawnSite Bronze Member
    Posts: 1,631

    Ummmmmmm last key switch I did,,, I had to have the key in the tumbler and turned to run or start to remove the whole assm....he said the key wouldn't work in the tumbler
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  5. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,140

    Yep......I am thinking that if you can turn the switch with the key then
    it comes out real nice and sweet. But if you can't turn the switch then it is a *****. I need a robber expert to give me some advise.
     
  6. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,140

    Isn't it likely that the switch cyclinder is bad if you can't turn the key and not the starter switch on the column? Assuming I can pull the switch cycliner out using the key and paper clip ....can that part be purchased and installed. I assume the key tumblers are in the part you remove right? If I have to get into pulling the steering wheel lthen I woudl replace the ignition switch on the column.
     
  7. dieselss

    dieselss LawnSite Bronze Member
    Posts: 1,631

    Yes those tumblers are very common. But if you cant turn the key, either the key or the tumbler is shot. The internals can go bad.. Try and squirt some lube in it first before you goto the extreme
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  8. dieselss

    dieselss LawnSite Bronze Member
    Posts: 1,631

    Again you have to turn the key to get the tumbler out. If you can't then drill, or slide hammer it out
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  9. 32vld

    32vld LawnSite Gold Member
    Posts: 3,984

    Back in the day when I worked in as a mechanic in a GM dealership we never had to drill or pull or slide hammer out a ignition key cylinder.

    I also repaired the steering columns on many theft recovery autos. Those steering columns had to be repaired because of people like you advocating drilling and or pulling out the key cylinder.

    He can try another key but you would think that everyone has a spare key and he would of tried it along with trying so penetrating oil before posting here.

    There is no such thing as a switch cylinder.

    There is an ignition switch on the lower end of the steering column and the igntion key cylinder. As with all electrical switches they open or close the electircal circuit.

    In the 60's the ignition key lock cylinder and switch were all one unit located on the dash.

    Later when the ignition key was located on the steering column the lock cylinder was connected to the ignition switch (located on the lower end of the steering column) by a metal rod.

    As the key causes the ign lock cylinder to turn it causes the rod to move towards the ignition switch, which then causes the ignition switch to complete the circuit and the car will start and run.


    Edit to add never had an ignition switch or the rod cause the key cylinder not turn.
     
  10. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,140

    I haven't went over to the truck yet and tried it myself i am swamped with other repair on lawn equipment. That lock cylinder rotates in something and is that something replaceable also or does the ign lock cylinder come out in total when you turn it and use the paper clip. This dam truck is a spare but parked in a bad place at our shop. I am basically wanting to move it at this point. I ain't going to do any drilling but I will use dromel to cut all those cowing off if I have to.....if that helps get this thing moved.
     

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