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Need to replace ignition switch on 89 gmc truck

Posted by Anonymous on

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Posted on Jan 02, 2017

  • 18 Answers

SOURCE: Ignition Switch 89 Ford Lariat Truck

Comment by 54harley, posted on Nov 13, 2008 Jeff;
First of all before anything else, disconnect the ground battery cable. Remove column shroud by loosening the screw on the underside, selecting position "1" for automatics and manual 3 speeds, then spreading shroud open and withdrawing out of instrument panel opening by pulling up and away from the column.

If the ignition switch is out of adjustment, that will keep it from working properly. It operates by a rod through the lock actuator rack and pinion which is driven by the key cylinder. To readjust the switch, first disconnect the ignition switch connector by carefully spreading apart the locking fingers and pulling the plug apart. Now rotate the key back and forth until you can insert a 5/64 drill bit, or something equivalent, through the locking pin hole as far as possible. The locking pin hole is located on the right of the switch next to the steering column tube. Next loosen the two ignition switch mounting nuts, turn the ignition to LOCK (feel for detent), and remove the key. Now move the switch up and down along the column to locate the mid-point of the rod lash and then re-tighten the mounting nuts, making sure to tighten top nut first to minimize any rod binding. Now remove the drill bit and reconnect the electrical connector.

If you need to replace the switch, first remove the column support bracket and lower the column. Disconnect the plug, remove the two nuts, lift the switch up vertically to disengage the actuator rod from the switch, and remove.
When you install the new switch, both the lock cylinder and the ignition switch must be in the LOCK position for correct adjustment. Turn the lock cylinder to LOCK and remove the key. The new switch will already be pinned in the Lock position with a metal shipping pin. Now install the new switch by first engaging the actuator rod to the switch, and then positioning the switch on the column and installing the nuts, but only finger tight! Move the switch up and down along the column, and when you locate the mid-point of rod lash, tighten the nuts, top nut first. Remove the lock pin, reconnect the battery ground cable, and check to see that it starts properly in Park and Neutral, and will not start in Drive or Reverse. Raise the steering column back up into position, and put bracket back on. Reinstall the shroud by spreading it around the column and through the instrument panel opening, making sure that the pin on the shroud is aligned with the upper hole on the column before installing the shroud screw.

I hope this works for you. Although I've done this before, these instructions are from the Ford Truck Shop Manual, and a Haynes Repair Manual. Good Luck!!!

Posted on Nov 13, 2008

  • 147 Answers

SOURCE: what transmission will fit in an 89 gmc sierra?

if it has a 4.3 liter motor a 86 to a 97 if it has a 350 motor a 81 to a 96 will work hope this helps

Posted on Nov 20, 2008

  • 6 Answers

SOURCE: 1997 GMC Sierra Truck Ignition Switch

its a long process,you need a steering wheel puller, once its off take the hazard button assembly out, take the turn signal loose, pull old ignition out, carefully install new one, and reverse procedure and always if u get confused i would highly recomend
a chiltons manual they explain things great

Posted on Feb 16, 2009

  • 59 Answers

SOURCE: 1997 GMC Sierra Ignition Switch Replacement

take off the cover on the top and bottom of the steering column just behind the wheel. pop the tilt lever out simply just by grabbing it and give it a good tug. then once you have the new switch and you get in there your going to need an inverted torx socket to remove the small bolts that hold the switch to the column. do not move the gear on the new switch make sure it lines up exactly as the old one did!!!!!!!!!!!!

Posted on Mar 15, 2009

  • 532 Answers

SOURCE: need to replace ignition switch

well,after the wheel there is a disk with notches in it that comes off and has a c clip holding it there,there is a spring behind it then take off the turn signal switch,then there is a small bolt or screw to take off where the switch is(still behind the steering wheel)put your key to accessories then pull the switch out,if you have no key,then you have to either break the switch or get a locksmith to do it,ive done it in my chevys and its not really fun without a key

Posted on Apr 23, 2009

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1997 GMC Sierra Ignition Switch Replacement


take off the cover on the top and bottom of the steering column just behind the wheel. pop the tilt lever out simply just by grabbing it and give it a good tug. then once you have the new switch and you get in there your going to need an inverted torx socket to remove the small bolts that hold the switch to the column. do not move the gear on the new switch make sure it lines up exactly as the old one did!!!!!!!!!!!!

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