Question about Buick LeSabre

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Wire on key cylinder broken (diode key) touched wires to spare key and the car starts -did not start till i did this is there a way to by pass this system

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Measure the resistance of the pellet on the key. Go to radio shack and get a resistor that matches the resistance of the pellet and solder it into the wires under the steering column.

Posted on Nov 16, 2009

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Posted on Jan 02, 2017

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1995 cougar won't turn off at key


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How much would it be to by pass the vat system on a 97 buick lasabre ?


A new ign lock cylinder is about $41.00 . Find wire at bottom of steering column just behind lower cover. Unplug wire and plug new lock cylinder wire into it. Place your old key with chip in it into the new cylinder. Now with a copy of old key or extra key start car. Hide new lock cylinder under dash and problem solved.

Sep 28, 2011 | 1997 Buick LeSabre

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1997 CADILLAC DEVILLE ENGINE CRANKS BUT WILL NOT START THE THEFT SYSTEM CODE FLASHES AND READ THE CODE TCS B1750 PASS KEY FAILURE CURRENT THE RESISTANCE OF THE KEY IS 7.5 KOHMS AND THE RESISTOR WAS CUT IN...


On the key there is a diode theat the key connects inside the cylinder lock from the lock cyclinder their is two white wires that thread down the collum to the maim collum connector.here they plug into the main harness. If this white set of wires is broken or cut anywhere or connected to ground then the security system won't let the car start. A new tumber comes with the white wires and the contacts that touch the key. I remove the new contact wire assembly from the old tumbler and install the new on that came with the new tumbler. I don't use the new tumber as I don't have a key with the diode in it thats right for the car. with the old key in the old tumbler with the new wire and contaacts all assembled the car should reconize the key and run like it used to,

Oct 27, 2010 | 1997 Cadillac DeVille

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We asked about our pass key light. We were told to turn key on and wait 10 minutes. Light went off in about 20 seconds. Car still does not start. Now what


The 1993 fleetwood cadillac has a key with a resistor mounted in the key (in the center of the black plastic in the key. The ignition lock cylinder reads this resistence, If correct the car starts. In your case the wires that come off the lock cylinder may be broken. If the starter turns the engine over then the lock cylinder is ok. Need more information

Sep 06, 2010 | 1993 Cadillac Fleetwood

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It wont start....i can jump accros the solenoid and it starts but wont stay running, i suspect the security system is the problem but need to kmow how to correct it.


the most common problem with this style pass key system is broken wires at the lock cylinder which will require replacement of the lock cylinder

Nov 04, 2009 | 1995 Oldsmobile Cutlass Supreme

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Securetylightison and wont start have fuel/spark trys to run then stops cycle key then start then shuts off admidiatly


your car was build with an anti-theft devise from GM, inside the ignition key is a micro-chip, when you insert the key in the ignition cylinder, the sensor inside the cylinder will measure the resistance of that micro-chip inside the key, if there is a match the engine will start, if no match the computer will think someone is trying to steal your car & shut it off.
try using another ignition key (spare key) if this doesn't work most likely the tiny wire inside the ignition cylinder is broken therefore the ignition cylinder will need to be replaced.

Oct 12, 2009 | 1999 Pontiac Grand Am GT

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Security light on truck won't start


most likely cause is an "open" in the security circuit. usually a broken wire from the ignition cylinder.
try using your spare key before jumping into the cylinder.

Oct 12, 2009 | 2001 Chevrolet S-10

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94 buick lesabre security light flashing


Ok..
Your vehicle is equipaded with Factory Anti Theft System.
Called Pass key II . If the mechanic found the Code
Pass key error....
Is there a few test to Do. to know exactly the problem.

1--- check if the Old and New key Are equipaded with a Little thing (Chip or Ressistence) in the center of the key.
If not you need a key with the chip. and the correct Ohms.

2. If you just replace the battery,
Full charge the battery Attemp to start the vehicle and leave the key in run position for exactly 11 Minutes, Them turn the key to off position for 30 seconds and try to start, if the vehicle start . you did the prosses to program the key.

If the vehicle not start.
Some times this procedure will require Up to 3 times to setup.
Or more with intervals of 30 minutes,, But if not start.
Remove the lower cover of the steering column. and the the Connector orange with 2 white wires shielded with a orange cover.
NOTE.. Be sure to not Confuse with the Yellow wires and connector, They are for the AIR BAG. Dont use a Convencinal Test light on any of the Mentionated wires....

After you find the wire and saw everything ok.

3-- You will need to remove the Ignition Lock cylinder.
The ignition lock cylinder is use 2 white wires shielded with orange cover, On 90% of the cases one of the wires come broken. and the ECM loss the comunication with the Chip incrusted in the key..

Dec 26, 2008 | 1994 Buick LeSabre

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