Question about 1997 Buick LeSabre

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1997 Lesabre won't start

I've replaced battery, VATS module and cylinder switch - still won't start. HELP!!!!

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Being a ase mechanic for 25 years, iv'e seen many a buick v6 do this. the camshaft chain upper sprocket (the bigger one) has a magnet glued on to it. This is what the camshaft sensor reads. THEY ALWAYS COME UNGLUED, usually after 60k miles or so. Replace timing chain set will fix it.

Posted on Jun 03, 2009

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Have u checked the starter

Posted on Nov 15, 2008

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2 Answers

How do I disconnect security system to start my 1994 buick lesabre?


I found a way to bypass it. ive used this module before

Sep 25, 2014 | 1994 Buick LeSabre

1 Answer

Security lite wont turn off


Usually means there is a problem with the VATS system which reads the chip in your key.
Could be a faulty key, the sensor in the lock cylinder, or the VATS module.

Apr 08, 2013 | 1995 Buick LeSabre

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SECURITY LIGHT ON CAR STILL RUNS


The warning light means the module does not accept the chip in the key. It has nothing to do with the engine computer.
The chip in the key has failed, or the sensor in the lock cylinder, or the VATS module has failed.

Oct 07, 2012 | 1997 Buick LeSabre

1 Answer

My 1996 Buck LeSabre won't turn over. I took the starter off and had it checked, it was fine. I checked the starter fuses and all was fine. \ Cabling was fine to the starter, voltage was 12.54...


Be sure the AIR BAG/VATS fuse 10 amp, is good. there is a STARTER ENABLE RELAY up high on the left of the steering column. I ASSUME the anti theft light is not flashing?" at the STARTER ENABLE RELAY the YELLOW wire is hot in the crank mode and comes out large PURPLE to the starter. the small purple wire is hot in the crank mode if the fuse (air bag/vats) is good. the small yellow is grounded through the park switch and the VATS module (anti theft)

Sep 21, 2011 | Buick LeSabre Cars & Trucks

1 Answer

My 1997 buick lesabre has an innermitant starting problem. turn key to start get no response, not a click or anything. security light stays on. after turning key for 5 or ten minutes will finally start....


Recommend you install the fix detailed at the webpage: http://vats.likeabigdog.com/
I have done this successfully in the past and believe it will fix your problem for a small cost. You will need a soldering gun or iron, an ohmmeter, and some knowledge of electronics. If you are not comfortable with the instructions, perhaps you have a friend that can help you.

Sep 09, 2010 | 1997 Buick LeSabre

1 Answer

Does the ign. key have a computer chip in it?


No. GM's vats system has a resistor in the ignition key. The Vats has a control module that needs to see the value of that resistor to start the car. If it doesn't see the resistance the car will crank but will not start up. Try your back up key. If that doesn't work the the Vats system needs to be replace. GM has only 15 different value resistors to A million different possible ignition key cylinder combonations.

Apr 05, 2010 | 1997 Oldsmobile Achieva

2 Answers

My theft system is on and my 1997 cadillac deville will not start what can i do?


you will need to replace the vats lock cylinder and key. the wires break at the ignition switch. the new cylinder will come with a dummy key . you will need to get a new vats key cut to that blank. take yor old key or vin# to the dealership so they wil know what your vats# is.

Nov 06, 2009 | 1997 Cadillac DeVille

1 Answer

1997 buick lesabre Will not start


assuming the key is the 1 the you have always been using and no battery changes in the vehicle , there are 4 fuses involved with the security system , i would start by checking them . right rear of engine compartment holds 1 maxi fuse #4 20 amp PCM VATS , and 3 other others in the I/P fuse box , get a tester and check all fuses .

Jan 02, 2009 | 1997 Buick LeSabre

1 Answer

1996 LeSabre Engine will not crank over


This fix was for a 1996 Buick LeSabre.
I found the key reader in the ignition switch was faulty.
Made up a resistor pack to match the key resistance, cut the orange wire which comes out of the steering coloumn (it contains two white wires) from the reader to the VATS module and soldered it into the two white wires going into the VATS module.
This bypasses the security system so now any properly cut key will start the car.

Dec 05, 2008 | 1996 Buick Riviera

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