Question about 1999 Chevrolet Lumina

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My "Theft System" comes on and the car will not start. How do I fix this? Is there a way to disable this feature?

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Cut blue wire.

Posted on Sep 24, 2010

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2000 grand am security light comes on can i bypass that with remote start


Are you the one who bought the vehicle new ? Replaced ignition switch or the ignition lock cylinder ? No , sorry, but a remote start will not by pass anti-theft system .

The vehicle theft deterrent system is designed in order to prevent vehicle theft by disabling the fuel injectors unless the lock cylinder is correctly engaged by a mechanical key. The theft deterrent system uses the following 4 components for theft prevention:
• The lock cylinder
• The ignition switch
• The body control module (BCM)
• The powertrain control module (PCM)
When starting the engine, the PCM searches for a password from the BCM through the Class 2 serial data circuit. If the password is not recognized or not present, the PCM will disable the engine. Two modes of tamper detection are provided:
No password received
The engine will start and stall quickly. SECURITY telltale will flash on the instrument panel cluster (IPC) and then stay ON steady.
Incorrect or disable password received (More than 3 invalid passwords are received)
The engine is disabled for at least 10 minutes and the SECURITY telltale will illuminate solid on the IPC during the 10 minutes.
After the vehicle has passed theft detection, the PCM will continue normal operation.

Jan 09, 2017 | Cars & Trucks

2 Answers

How do I reset the ProLock system?


Hi Carol , do you mean PATS passive antitheft system ? Locked up your car ,do you mean it won't crank over an start ?
The passive anti-theft system uses radio frequency identification technology to deter a driveaway theft. Passive means that it does not require any activity from the user.
  • During each vehicle start sequence, the ignition key identification code is requested by the vehicle protection anti-theft electronics.
  • If the key's ID code has been programmed into the system, the powertrain control module (PCM) (12A650) is signaled to enable the vehicle to start.
  • If the key's ID code is not programmed into the system, or if no encoded key is detected, then the powertrain control module is signaled to disable the vehicle.
The passive anti-theft system communicates the state of the security system to the powertrain control module via the J-1850 communications network data link connector (DLC). The powertrain control modulebased on the communications from the passive anti-theft system, will determine if the vehicle's engine is enabled to start. The passive anti-theft system differs from the active anti-theft alarm system in that the passive anti-theft system enables/disables the vehicle from starting and only operates with the ignition switch in RUN/START position. The active anti-theft alarm system has perimeter protection capabilities and operates only with the ignition switch OFF. Refer to Section 13-11A for active anti-theft alarm system information.
Vehicle Disabling The passive anti-theft system will be activated and disable the vehicle from starting if any of the following conditions exist:
  • damaged encoded key
  • unprogrammed key
  • non-encoded key (key has no electronics)
  • wiring concern
  • transceiver concern
  • Passive Anti-Theft System (PATS) control module concern
  • J-1850 Communications Network concern
  • Powertrain Control Module (PCM)

Apr 15, 2015 | 1995 Ford Taurus

2 Answers

Lincoln tow car 2001 passive anti tip DTC 1260 I replaced pcm.trancevier.instrument cluster.2new ignition key but no communication this module what possible problem this?


No where in the DTC - description does it say anything about replacing any modules . An does not have anything to do with a communication problem ! You need a professional grade scan tool to communicate with the PATS system ! An if you don't know these thing's you better take it to pro !!!!!!!
P1260 - Theft Detected - Vehicle Immobilized Indicates that the passive anti-theft system (PATS) has determined a theft condition existed and the engine is disabled. This DTC is a good indicator to check the PATS for DTCs.
  • Previous theft condition
  • Anti-Theft System failure
Theft indicator flashing rapidly or on solid when ignition switch is in the ON position. Check anti-theft system for DTCs. Typical vehicle symptoms are: Start/Stall or Crank/No Start. NOTE: No crank symptom only on vehicles equipped with PATS starter disable feature

Apr 04, 2015 | 2001 Lincoln Town Car

2 Answers

Anti theft light comes on the car won't start


Your "inmobiliser" system is actived.

The anti-theft feature prevents the car from being started when one of several anti-theft devices is faulty are have otherwise been activated. The problem you descibe might be the ignition swith, which is known to wear out quickly on those models. The system can be completly disabled only when the car is running (meaning the teft deterent system is inactive after the Passlock II system detects the proper key in the ingition). A wire can be cut that would perminantly disable Passlock II, meaning any key that opens the door (or a screwdriver) could start the car. If the ignition swtich goes out or this wire is cut while the engine is off (theft deterent system is active) then the car will have to be towed back to the dealer to have the ignition system replaced and reprogrammed.

I have called Chevy and asked how to fix this problem. If you turn the key to the on position, right before it cranks when the lights and radio turn on. Leave it there for ten minutes until the anti theft light turns off. Then turn the key to the off position and then try starting the car.

Rumour has it that it is a yellow wire to be cut. Do more research, but D O N ' T cut it with the engine off. See first paragraph above.

Hope this help (remember rated and comment this). Good luck.

Mar 25, 2010 | 2003 Chevrolet Malibu

1 Answer

Theft system light comes on and engine dies on 97 malibu


to disable theft system or passlock. if you have a computer go to tubesound.com for instructions on fixing problem. when on page, type in problem on the top of page. this page will tell ya how to disable system. toolman,

Feb 04, 2010 | 1997 Chevrolet Malibu

2 Answers

Need bypass factory alarm in 99 dodge


well thats an interesting idea but by bypassing the alarm your car will not usualy start it is a safety feature that is built in to all chrysler autos it will disable the starter coil door locks windows and half the electrical systm as a safety feature and anti theft feature

Dec 30, 2009 | 1998 Dodge Caravan

2 Answers

2006 chevy colorado passlock comes on and stays on, truck won't start for 10+ min. Can I disable this feature?


No, it can not be disabled.
The theft system is indicating a short term theft issue.
Have you added any "after market" remote start systems or alarms?
If NO.
Insert the key in the ignition, turn the key to run position ( do not start ) and leave it in that position for 10 minutes. Cycle the key to LOCK position, count to 10, then turn the key back to run position and leave on for 10 more minutes. After the 10 minutes is up, repeat the procedure (1) more time and the security system will relearn the PASS code.
Give it a try and let me know.
Regards,

Mar 23, 2009 | 2006 Chevrolet Colorado

2 Answers

Anti theft light comes on when driving


no cutoff switch!! try this turn key to on, do not start car. let sit for about 30 minutes, after 30 minutes, turn key off. wait 15 seconds and try to start car. this should reset anti theft system.

Feb 20, 2009 | 2000 Chevrolet Malibu

1 Answer

Anti theft system on my 2000 malibu goes off when driving


Its your ignition switch. Its not recognizing when you turn it to the start position. The little terminals inside the switch get burned and wear down. When mine went out, the whole power to the dash would flicker, even cut out when driving. I actually wired my system to 1 toggle switch for on and off, I kept the anti theft wires attached to the switch. I also have a starter switch, if I fail to turn the key like I'm trying to start the car, the theft light comes on and the car dies right after starting.

Feb 20, 2009 | 2000 Chevrolet Malibu

1 Answer

Factory alarm 97 grand prix


1st the system alarm is intagrated into the engine control electronics, it can not be disabled without poss damage to ther systems and controls, 2nd the most common cause of your issue is the sensor in the ignition lock cylinder being defective, this is the most common issue on all GM anti-theft systems.

Nov 18, 2008 | 1997 Pontiac Grand Prix

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