Question about 2002 Pontiac Grand Prix
Leave the key in the ignition, turned to 'run' (just before the crank position) and leave it there for about 15 minutes-the security light will then stop flashing-do NOT turn it off, turn it to crank and start the car. You have a security module that is not seeing the same resistance in the ignition switch as it expects, meaning you will have to either replace the ignition switch (expensive) or bypass the module (easy and inexpensive)-I have done lots of these, requires about 15 cents worth of parts and can be done in 1/2 hour.
Posted on Jan 24, 2011
If the headlights are flashing, the alarm system is factory installed. Inserting the key into the driver door lock and turning to the left then back to the right is supposed to disarm it. If the parking lights are blinking,, the alarm is an aftermarket add on, and there should be a disarm button under the dash on the driver side. If it' an aftermarket alarm, you should be able to have it removed. There is a way to bypass the factory alarm. There is a wiring harness in the driver's door. You will have to remove the door panel to find it. The wire is dark green and purple. Splice into that wire and ground it to the chassis and the alarm should no longer work.
Posted on Jan 24, 2011
It's when the security light starts flashing that the infamous "chip" in the key becomes a nightmare to many. Gradually the car begins not cranking anymore or if it cranks it would start and die in a second. Randomly it will do this more and more often until it won't start anymore. VATS, PASSkey and Passlock immobilizer systems are killing cars all over North America, they have a short lifespan and are certainly more effective against owners than thieves. Here is how you save your car
1st trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shuting down while running, im sorry i have no quick fix...
Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. For a list of cars effected by this problem. See the NEWROCKIES link on the right side of their page......... They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks.
----- With this fix, you can take that whole Vats, passlock, passkey **** system out of your car all together. Good info on both sites
It works for:
Any GM or Isuzu Vehicle with VATS or PASSKey or PASSLock security systems.
If your car has the chip in the key or in the lock cylinder, then you can save it with this Full Bypass.
2003-2007 Hummer H2
1994-2003 Grand Prix
1996-2005 Grand AM
1994-1998 Trans Sports
1996-2002 Trans Am
1991-1996 Park Avenue / Ultra
1991-1996 Roadmaster Estate Wagon
1982-1990 Electra (all models)
1991-1993 Delta 88
1994-1997 Cutlass Supreme
1991-1996 Custom Cruiser
1995-2005 Monte Carlo
1994-1996 Caprice/Caprice Wagon
1995-1996 Impala SS
1997-2005 Malibu Classic
1985-1996 Fleetwood Brougham
1994-1999 Deville Concours
1997-1999 Deville D'Elegance
1994-2002 ElDorado Touring
Posted on Feb 02, 2011
HOW DO I UNHOOK MY ALARM IN CADILLAC DTS
Posted on Jul 18, 2012
Use the key fob that came with your car or replace the battery in your key and keyfob
Posted on Apr 15, 2015
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Posted on Jan 02, 2017
With the new lock cylinder in it, turn the key on. The security light should blink. Leave the key on for 10 minutes, the security light will quit blinking and go out after 10 min. This will reprogram your security system and the car should start. Also leave a battery charger on it while the key is on, If the battery goes dead during the 10 minute reprogram sequence, you will have to start over again.
Posted on Mar 08, 2009
on your 2005 chev. has a factory alarm system and a chip on the key to the ignition switch if you turn the key and you don't here the starter cranking then that could be the alarm system if you here the starter cranking then it could be the chip in the key when you put the key on and engine off you should see the security light should see the light turn off if not then the anti theft is not deactivating if the light turns off then you have a electrical problem have your starter checked out good luck Josh
Posted on Jul 18, 2009
The security system (VATS/Passkey) installed on these GM cars is anti-owner more than an anti-theft. There are 3 parts involved:
Posted on Mar 01, 2011
I suggest check the procedure to ARMED/DISARM in the Oldsmobile-Eighty-Eight-Owners-Manual
Hope helps (remember rated this).
Posted on Jun 06, 2010
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