Question about 1989 GMC Sierra

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I have a 1989 GMC Sierra that would not shut off when the key was turned to the off position and removed. I replaced the ignition switch and lock cylinder. It worked for two weeks and now we have the same problem. Any suggestions?

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  • mlsaenz847 May 07, 2010

    Thanks, I check it this weekend!

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  • Master
  • 395 Answers

Sounds like the wiring is bad check for cracked or curroded spots

Posted on May 06, 2010

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How do I replace a faulty ignition swith


You will have to remove all the cowlings from the steering column to access the ignition lock and switch. With the correct key inserted and selected to, probably, the ACC position, you should be able to push on either a pin or a tongue that protrudes from the switch into the housing and the pull the whole lock/switch mechanism out.

May 19, 2011 | 1995 GMC Sierra C1500

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I just bought a 1990 GMC Sierra 1500 and didn't realize this problem while on the test drive. The key won't turn the ignition all the way back to the lock position, it stops about a third of an inch before...


Lock cylinder needs to be replaced. It's kind of a pain to replace - steering column apart, etc... Most parts store carry replacement - note you will now have 2 keys for your truck - outside locks & ignition.

Apr 04, 2011 | 1990 GMC Sierra

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Jul 20, 2010 | 1993 GMC Sierra C3500

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CHANGE IGNITION SWITCH ON AUTOMATIC GMC SIERRA WITH 5.7LITER ENGINE


Removal & Installation


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Exploded view of the ignition and key alarm switch

  1. Remove the column shroud halves.
  2. Remove the column-to-dash attaching bolts and slowly lower the steering column, making sure that it is supported.
  3. Remove the multi function switch if necessary.
  4. Remove the key alarm switch, if equipped by gently prying the alarm switch retaining clip with a small screwdriver. Rotate the alarm switch 1/4 in. turn and remove.
WARNING Extreme care is necessary to prevent damage to the collapsible column.

  1. Make sure that the switch is in the Lock position. If the lock cylinder is out, pull the switch rod up to the stop, then go down one detent.
  2. Disconnect the actuating rod from the switch.
  3. Remove the two screws and the switch.
To install:
  1. Before installation, make sure the switch is in the Lock position.
  2. Attach the actuating rod to the switch.
  3. Install the switch using the original screws. Tighten the screws to 12 inch. lbs. (1.4 Nm).
  4. Install the key alarm switch, if equipped . Make sure the retaining clip is parallel to the lock cylinder. Rotate the alarm switch 1/4 in. turn until locked in place.
  5. Install the multi function switch if removed.
CAUTION Use of screws that are too long could prevent the column from collapsing on impact.

  1. Replace the column. Tighten the nuts to 22 ft. lbs. (29 Nm); the bolts to 20 ft. lbs. (27 Nm).
  2. Install the column shroud halves.


ae03a0b.gif
Exploded view of the alarm switch removal

May 04, 2010 | 1998 GMC Sierra

1 Answer

I changed batteries in my 2003 GMC Sierra key fob


1. Close all doors
2. Insert key into ignition
3. Hold down the power UNLOCK button on the driver's door panel, continue to hold down
until instructed to release in step 9.

4. Perform steps 5 through 8 in a fairly rapid succession.
5. Turn the ignition to the ON position (as far as you can go without starting the engine.)
6. Turn the ignition to the OFF position.
7. Turn the ignition to the ON position (as far as you can go without starting the engine.)
8. Turn the ignition to the OFF position.
9. Release the power UNLOCK button on the door panel. The vehicle should respond by
door locks locking and unlocking automatically. (If locks do not cycle after you let go,
not before you let go of the unlock button, then the vehicle has not entered programming
mode and you must start procedure over. Remove key from ignition, open drivers door
and return to step 1 ). If the locks do cycle automatically then proceed to step 10.

10. Hold down the LOCK and UNLOCK buttons on the remote until the doors lock and
unlock. This may take up to 30 seconds.

11. Repeat step 10 NOW for each additional remote. (Including any existing remotes).
12. Turn the ignition to the ON position to exit the programming mode.
13. Test remote(s).

Mar 06, 2010 | 2003 GMC Sierra 1500

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How to remove the ignition in 1991 GMC Sierra? My son broke off his key and the other half is stuck way down in the ignition.


disconnect neg battery terminal -remove steering wheel will need a puller some auto stores let u borrow these tools -remove turn signal switch not necessary to totally remove switch pull far enough rearward to slip over shaft but dont pull harness out of column --turn key to run -remove the lock retaining screws dont drop into column -remove lock -screw torque is 40 inch lbs for reg column 22 for adjustable column

Oct 21, 2009 | 1991 GMC Sierra

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How do i change the ignition key switch in my 1988 gmc sierra


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Sep 18, 2009 | GMC Sierra 1500 Cars & Trucks

1 Answer

Car was stolen broke the ignition


REMOVAL

  1. On models equipped with airbag, disarm airbag as described under MAINTENANCE PROCEDURES/AIRBAG SYSTEM DISARMING.
  2. On all models, disconnect battery ground cable.
  3. Remove ignition switch as described under STARTING AND CHARGING SYSTEMS/COMPONENT REPLACEMENT AND REPAIR PROCEDURES/IGNITION SWITCH.
  4. Remove key light case from lock body, if equipped.
  5. On 1989 Accord models, place ignition lock cylinder in the ACC position.
  6. On except 1989 Accord, place ignition lock in the I position.
  7. On all models, position suitable punch into hole on lock cylinder housing and depress pin, then remove lock cylinder from housing.
INSTALLATION

  1. On 1989 Accord models, install ignition lock cylinder as follows:
    1. Place ignition lock cylinder in the LOCK position.
    2. Rotate key until it is almost at the ACC position, then insert lock cylinder until pin contacts housing.
    3. Rotate key to ACC position, then push pin in and insert lock cylinder into housing until pin clicks into place.
  1. On except 1989 Accord, install ignition lock cylinder as follows:
    1. Place ignition lock cylinder in the O position.
    2. Rotate key until it is almost at the I position, then insert lock cylinder until pin contacts housing.
    3. Rotate key to I position, then push pin in and insert lock cylinder into housing until pin clicks into place.
  1. Install ignition switch and connect battery ground cable.
SRS wire harness is routed near the ignition switch.

CAUTION:
  • All SRS electrical wiring harnesses are covered with yellow outer insulation.
  • Before disconnecting the SRS wire harness, install the short connector on the airbag.
  • Replace the entire affected SRS harness assembly if it has an open circuit or damaged wiring.
IGNITION SWITCH
  1. Remove the steering wheel, then remove the steering column covers.
  2. Disconnect the 7-P connector from the under-dash fuse box.
  3. Insert the key and turn it to "0."
  4. Remove the 2 screws and replace the base of the switch.

Feb 13, 2009 | 1992 Honda Accord

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