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How to remove ignition key lock cylinder in GMC sierra 2500

Sir, my car is GMC Sierra 2500.. i cannot turn the ignition key to starting position..the key cylinder stuck in off position. i can remove the key from key cylinder easily. but i cannot turn in to the starting position.. i need to replace the key cylinder.. how to replace the key cylinder .. please help

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 375 Answers

SOURCE: 2007 gmc sierra 2500 IAT sensor

Well, the IAT (Intake Air Temperature) sensor is located on the air intake duct between the filter and the throttle body (Assuming you have the 6L motor). The wires are easily visible at the plug that connects the sensor to the wiring harness. That's the easiest place to access them.

Posted on May 18, 2008

  • 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

  • 1 Answer

SOURCE: 2003 gmc sierra duramax 2500

Problem with Diesel Fuel System. Gmc 2002 duramax 2500 HD 4x4 will start 

Posted on May 15, 2009

  • 142 Answers

SOURCE: 2003 GMC SIERRA K2500 HD

buy a clintons repair manual at a auto store they will have a complet break down on wiring, plus so much more its worth the $20

Posted on Sep 23, 2009

emissionwiz
  • 75005 Answers

SOURCE: i need to replace the ignition switch for my gmc

not sure if u mean the ignition lock cylinder or the actual electrical switch but here are all the instructions.
The mechanical switch itself is rod actuated and located under the dash bolted to the steering column. Remove and trim panels to expose the column bracket. mark the location of the shift indicator clip, and remove with a small flathead screw driver. drop the column and it's right there ,I think it's has two 7mm screws holding it on.

If you are talking about the key cylinder itself you will need to remove the steering wheel, remove the plastic lock ring cover, if you have an air bag there is a ring with yellow wres coming in and out if it, this you CANNOT turn this ring w/o causing damag to the unit and rendering your airbag useless and eht airbag light to come on, remove it carefully and set it on top of the column. With a special tool press the locking ring down and remove the snap ring. After the locking ring is removed you expose the turn signal switch/cam, remove the screw on the left of the cam that attaches the turn signal arm to the switch, and remove the emergency flasher button, both should be phillips head. After the arm and button are removes remove the 3 screws that old the switch in place. GENTLY pull up on the switch, making sure not to break the wiring harness. There is a small plastic and copper connector over a torx head crew, remove it with needle nose pliers being careful not to damage it, this is the terminal that make the buzzer go off when you open the door and leave the keys in the ignition. Now remove the torx head screw and slid out the key cylinder. Re-assemble in reverse order.

Posted on Nov 12, 2009

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1 Answer

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1 Answer

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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
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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).

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