Question about 1999 GMC Sierra

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99 gmc lost my keys so i replaced the tumbler now the truck turns over like it wants to start but shuts down right away . what do i do please help

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  • marckeyd Nov 20, 2009

    they told me that the chip started in 2001 is that correct ?

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  • 422 Answers

The old key has a chip in it youll have to get a new key with a new chip programed for it, now pay me

Posted on Nov 20, 2009

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I have a 2004 gmc savana cargo van that every so often decides that it does not want to send power to the starter when i turn the key.If i wait one or two hours it will normally start right away.this...


Check your ignition key, if its excessively worn , have a new one cut and see if the problem persists. If ignition tumblers are not set correctly it wont start, even if it does turn the lock cylinder.

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If you replace the ignition switch tumbler then you also will have to get a new key and that will cost you 2 keys and reprogramming. Cheaper just to get 1 new key and program it from yours or the car.

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I have a 99 regal 3.8 supercharged car starts then dies. it loosing power to the fuel pump. have replaced fuel pump and ignition switch because i thought there was a prob with security system.i am realy...


It does sound like you have a passkey (security) issue. If the BCM does not recognize the key cylinder code the BCM will send a comand to the PCM to shut down the fuel system.
When you say you replace the "ignition switch", was it the switch or the tumbler.
If the tumbler was replaced you will have to relearn the key code.
Let me know if the key tumbler was replaced and I will tell you how to relearn the key code.
Regards.

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The truck with steering problems is a 1984 gmc sierra classic with tilt and the colum is loaded wipers cruise ect. the steering wheel is real wobbly and the key gets stuck in on and off position try to...


Sounds like your ignition/key tumbler is worn. A lot of times tumblers can get worn to the point that the keys will stop working or work sometimes. Usually the key goes bad first, since they tend to get the most abuse. It is not expensive to replace. I hope this helps.

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Ignition key is seized and therefore cannot start car, and car is therefore also stuck in park gear. What needs to be done?


First if the steering wheel is locked try to turn the steering wheel away from the locked position and and jiggle the key at the same time. If you have another set of keys try them too. I did have one of these tumblers go bad before if the other two things don't work you will probably have to replace the tumbler which is kinda hard to do if you can't turn the key on because to get the tumbler out you have to have the key on and push a button underneath as part of a security so its not easy to steal. You can get it out with a hammer and punch where the button is to force it out but be carefull not to break it. If you dont have a new tumbler right away you can use a large screwdriver to start it temperoly after you get the old tumbler out.

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I have 98 chrysler sebring and my ignition is lock and i cant turn my car on


First if the steering wheel is locked try to turn the steering wheel away from the locked position and and jiggle the key at the same time. If you have another set of keys try them too. I did have one of these tumblers go bad before if the other two things don't work you will probably have to replace the tumbler which is kinda hard to do if you can't turn the key on because to get the tumbler out you have to have the key on and push a button underneath as part of a security so its not easy to steal. You can get it out with a hammer and punch where the button is to force it out but be carefull not to break it. If you dont have a new tumbler right away you can use a large screwdriver to start it temperoly after you get the old tumbler out.

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2001 gmc yukon xl key in ignition won't turn to start at all.


The tumblers in the ignition lock may be seized, try cleaning it out first with a small spray of WD40 and try the spare ignition keys. The keys it self may be too worn down for the tumblers in the lock and if you have lots of other keys on your key chains, this will promote the lock to wear out quicker. Good luck and hope this helps and try turning the steering where back and forth as you try to turn the ignition key.

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Replaced the ignition lock and tumbler. Alarm going off nostart


you need to have the keys programmed with a ford scantool. that's the only way.

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99 GMC Sierra Pickup: Crank but no start. starts with starting fluid but dies. changed out the fuel filter. still not start. Do I have a bad Fuel Pump? Security light flashes then goes solid after 10 min....


The theft light issue is a good observation. Have you replaced the key tumbler or an ignition component lately? Has there been a lightning storm close very recently?

What the flashing security light is indicating is an attempt to relearn the key you are using.
Turn the key to run position, allow light to flash for 10 minutes, when light stops flashing turn ignition to OFF position for 5 seconds, turn ignition to run position and start over. Do this for 3 consecutive cycles, the the theft system will relearn the key cylinder code and store it once again.
Try that first before you go any further.
Let me know what you find.
Regards,

Apr 30, 2009 | 2000 GMC Savana

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