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Reset security system

Tiny
RADIO1456
  • MEMBER
  • 4 POSTS
Is there time line the car will start again or trick to get it to start, so I can get it to the repair shop? The car hasnt started at all when I tryed evey two hours, earlyer today.
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Give this a try to start it.
30 MINUTE LEARN PROCEDURE

TOOLS REQUIRED
None

1. Turn ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON (vehicle will not start).
3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
4. Turn OFF the ignition, and wait 5 seconds.
5. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).
6. Start the engine (the vehicle has now learned the Passlock Sensor Data Code and/or password).

IMPORTANT: The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
RADIO1456
  • MEMBER
  • 4 POSTS
My car started late last night before, the steps you sent. Its seens to be starting ok for now.

My other question how long before passlock senser stops reading again? I be taking my car to the shop friday.

Also my alarm system doent look like its been working as well. I tryed some of the steps in the onwers manual and just learn that alarm system not working like it should. Does bad passlock senser have something to do with that?
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
There is no telling when the next time the car doesn't start that is going to be very random till you get it fixed. You hadn't mentioned your alarm problem's before if the alarm system is causing a false tamper then that could cause a no start and have nothing to do with a bad pass lock issue. You will just have to take it in to which is the case or you could have two problem's the pass lock issue and a alarm issue. Let me know what they find.
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
RADIO1456
  • MEMBER
  • 4 POSTS
Yea I didnt see any problem with alarm system intell last night, I was reading the onwers manual, and it talked about locking doors. It said when you use power lock swith, before doors are cloesed the light on radio should be on entell you closed the doors and it will start slowing flashing when close the doors. When I lock the doors with power door swich, the light on the radio is still flashing and when I close the doors and there locked it still flashing, nonthing changes.

Is there any way to disaram the alarm system, so this problem will stop intell I get it to the shop?
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+3
Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Here's the problem the newer gm car's use a body control module to run the lock's key less entry alarm mileage light's etc if you shut that down you loose everything. So you need to just hope for the best untill you get it checked out.
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
KAMAN36
  • MEMBER
  • 1 POST
  • 2003 CHEVROLET IMPALA
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 89,212 MILES
It is simple, when I turn off the vehicle, I take out the key and before I can exit the vehicle the headlight flicker rapidly. If I engage the door locks and shut the doors it will do one of two things 1) flicker once or twice and stop. Or 2) continue flickering rapidly, occasionally stopping and restarting every few seconds until I replace the ignition key and turn to "on". Also, upon starting the vehicle each time the drivers door lock will disengage, while already disengaged, over and over for about fifteen to thirty seconds. It is acting as if the car alarm is activating but the pass-lock does not engage so starting the car is not a problem but after a few seconds of motion and while driving the engine will simply turn off. How do I reset the security/alarm/pass-lock for this vehicle?
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
STEVE W.
  • MECHANIC
  • 13,573 POSTS
That does not sound like the pass-lock system. It sounds like a faulty body control module or steering column wiring harness fault.
Pass-lock does not connect to the headlights, it uses the parking lights,
Pass-lock does not operate the door locks, those are controlled through the BCM and the remote keyless entry system.
Lastly pass-lock shuts of power to the starter not the fuel system.
It can cause a lot of problems but the ones you are having do not point to it.
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Friday, March 12th, 2021 AT 9:18 AM (Merged)
Tiny
EMMY83
  • MEMBER
  • 4 POSTS
  • 2002 CHEVROLET IMPALA
  • 146,000 MILES
So I just bought the car and now when I go to start it, the battery and security lights flash. All of the interior lights come on along with the radio. When it happened, I was at a restaurant that, luckily, a friend of mine worked at. She helped me jump my car but nothing happened. So frustrating! I had it towed to my apartment because I didn't and still don't have the money to fix it. I keep hearing/reading it's a security flaw. How can my boyfriend fix this problem? I tried putting the key in the on position until the security light stopped flashing but it never did. I've read several different solutions involving the bcm but I wanna hear it from a pro before we do anything. Please help! Oh, by the way, when I called a Chevy dealership to explain the problem, she kept telling me it couldn't possibly be the security flaw I've been reading about. That it's either the starter or battery. Pshaaa!
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Try this. Trun the key to start and let it come back to the on position. The security light will be on. Leave it there till the security light goes out. It could take up to 10 minutes. Do this 3 times. After the third time, it should start. If not then there is another issue.

Roy
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
EMMY83
  • MEMBER
  • 4 POSTS
Ok what if we do that and after about 25 30 mins it starts dinging and all of the panel lights come on? Does that mean it's reseting itself?
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No, what happened to the security light?

Roy
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
EMMY83
  • MEMBER
  • 4 POSTS
It's still coming on after the battery light. Help me, Roy! This is crazy!
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you follow the procedure and did the light go out? Forget about the battery light till you get it to start

Roy
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
EMMY83
  • MEMBER
  • 4 POSTS
The security light never went off. I did it twice and only twice because the freaking battery died in the process! I'm almost resigned to have it towed to the dealership for the diagnostic alone. My friend Todd, who's a mechanic, told me to have it jumped and hit the starter with some kind of bar to see if it's sticking. I feel like this is the craziest thing I've heard thus far. Eh. I hate this car. More than you could ever know. I think you might need to make a trip to Denver.
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
AMYSW29
  • MEMBER
  • 1 POST
  • 2002 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 192,700 MILES
Every few days-week I have a problem starting my car. I took my starter in to get checked and as I recall they cleaned the brushes and repaired a bushing. Anyways, that helped the problem for a little bit but now I am having the problem again. The battery and alternater are working fine. What happens is when I try and start my car it won't turn over. All I get is a clicking sound. I have found that if I continue to start my car. After 10 minutes (almost exactly) it will start. Please give me any sugestions you may have as this is getting to be quit a pain when it happens. Thank you for your time.
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Friday, March 12th, 2021 AT 9:19 AM (Merged)
Tiny
RENAUDTN
  • MECHANIC
  • 636 POSTS
That sounds like a typical passlock problem. Passlock is your theft deterrent device.
When your car doesn't start, does " œsecurity' flash on the dash? If so that would confirm a passlock problem.
There're a few things you can do:
* Go to a dealer and get charged a ridiculous amount of money for a diagnosis and a fix that may or may not work.
* Try the GM reset procedure for passlock:
"Â Turn ON the ignition, with the engine OFF.
"Â Attempt to start the engine, then release the key to ON; the vehicle will not start.
"Â Observe the security telltale; after approximately 10 minutes the telltale will turn OFF.
"Â Turn OFF the ignition, and wait 5 seconds.
"Â Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes; the vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
Important: The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
* Bypass it (check online for infos)
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Friday, March 12th, 2021 AT 9:19 AM (Merged)

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