PassLock seems to have the highest failure rate. [2.2Kohms]) If not, you have a wiring problem and you will need a wiring diagram for your vehicle to make repairs. From United States. These systems only have 3 components, but those components together can cost you more than $1,000 at the dealer to replace. Then turn the ignition to OFF before attempting to start the engine again.". Security Fix Your owner's manual gives you the following advise, "After attempting to start the engine, if the "SECURITY" light flashes or stays on, wait ten minutes with the key in ON until the light goes off. Attempt to start the engine, then release the key to ON (vehicle will not start). Turn off for 5 seconds then Leave in ON position for 10 min, crank it but not start it...then off for 5 seconds, then do the 10 minutes in ON position again then off...crank it...off for 5 seconds and ON position again for 10 min then off, then crank it and off for 5 seconds then ON for 10 minutes then off. (not the plug on the BCM, but the connector on the end of the wiring harness.) Is there a known repair for the security light/passlock problem that causes Impala and other GM products not to start for 10 to 30 minutes? 9. 30 Minute Learn Procedure 8. They are Black (analog return), White (power), and Yellow (analog data). We should give him credit for knowing more than any other GM mechanic on earth. BCM and PCM must be in working order and the Passkey system repaired. •This will allow you to install a remote starter and not have to purchase a bypass. Strip 3/8 inch of insulation from the end of the black wire and then twist the bare strands together Do the same with the yellow wire. After you shut down your vehicle, the next time you start your car the SECURITY light is on solid. Tools Required: None. Sharp knife for cutting and stripping wires. When it does, Turn the ignition OFF for five (5) seconds, and then try to re-start the car. Said 2 contacts were burnt on key switch. 6. The most common failure mode of Passlock II is when the ignition switch no longer recognizes the resistor embedded into the key, causing a … If it starts and run, the system has reset. Cut two terminals off the end of the terminal strip. Brand New. A red (or yellow) “security” warning light will stay illuminated and the engine will either a) never start or b) start for a moment and then shut down. READ THIS FIRST, GM made several different types of anti-theft systems. 3. This is for any GM vehicle with a Passlock, PASSkey,or Vats antitheft security systems. NOTE: This part bypasses your passlock security system thereby causing your car to think the correct key is being used with the correct resistor. Re-connect the two outside connectors to the Body Control Module. 2002 Impala passlock / security light problem 24 Answers. The security system goes out or stops working and leaves you stranded. Top Rated Seller Top Rated Seller. With a scan tool, clear any DTCs if needed. It can be VATS , Passkey or Passlock anti theft system that is going bad causing your issue. The Body Control Moudle should re-learn the security signal, and the "SECURITY" light should go out. It should start, and then stall, with the "SECURITY" light flashing. if your security light blinks, you may have a damaged key or passlock sensor in your ignition switch. No soldering is required. 9. A wide variety of GM cars come with a passlock theft system feature that is meant to keep GM cars from being stolen. Inspect the connectors carefully to make sure they are not corroded. Turn the key to ON and attempt to start the engine. 1131 Outer Drive 5. Fenton, MI 48430. They will be near the end of the switch where the key is inserted. Now you have created the module in the right side of the above photo. This is one in a series of articles. you cannot buy them new. Bypasses most GM passlock security systems to fix No Start issues, or flashing/stuck on security light issues. This arrangement enables the tamper sensor to engage first in the event a thief attempts to bypass the Passlock sensor by placing a large magnet around the area of the steering column. Most of them haven't the foggiest idea how the system works. Three thin wires, possibly taped together with fabric tape, will be visible coming from the top of the ignition switch. A security resistor inside the Passlock … But here are some more articles to help, Click here to see the resetting procedure for PassLock, Click here to see the trouble codes for a PassLock system, Click here to see a typical PassLock wiring diagram, IF you have a PassKEY system, click here to see the reset procedure. With an Ohmmeter, measure the resistance between pins A6 and B6 of the center connector. 1) A light saying SECURITY or ANTITHEFT is illuminated solid or flashing 2) A light shaped like a car with a "padlock" through it is on or flashing. 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