Security Light comes on won't start - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Pontiac When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 11-08-2010, 09:46 PM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2010
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
okrobie is on a distinguished road
Default Security Light comes on won't start

Hello, Thanks for having this forum.

This is for a 2004 Grand AM.

Occasionally when I turn on the ignition key, the blinking "Security" light comes on and the car won't start. It doesn't click or turn over or anything. I have to leave the ignition switch in the on position for ten minutes and then the engine will start.

Can someone please help me figure out how to eliminate this problem?

Thanks

P.*. I took the car to the dealer and they tried to sell me some kind of an accessory for $1000
Read more at http://www.pontiacforum.com/pontiac/...2938&kcplink=1
okrobie is offline   Reply With Quote
Old 11-08-2010, 11:06 PM   #2
BXX
Senior Member
Posts like a 4 Banger
 
BXX's Avatar
 
Join Date: Nov 2010
Location: Lorain, Ohio
Posts: 130
Thanks: 0
Thanked 0 Times in 0 Posts
BXX is on a distinguished road
Default



you need a new passlock sensor. It attatches directly to the lock cylinder. You can get one from the dealer or through aftermarket parts. Dorman makes them for you car.

I have replaced dozens of them. Easy to do but tedious with the cramped quarters for some people.
BXX is offline   Reply With Quote
Old 11-09-2010, 08:21 PM   #3
Junior Member
Thread Starter
 
Join Date: Nov 2010
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
okrobie is on a distinguished road
Default

Hi BXX thanks for your reply. I have had some other feedback that the problem is burnt contacts on the ignition switch and that the ignition switch should either be replaced or the contacts should be burnished. The theory is that the burnt contacts are not allowing the correct current to flow through the passlock sensor.

What is your take on that theory? Since I have two different opinions, I would hate to buy the wrong part.

Thanks again.
okrobie is offline   Reply With Quote
Old 11-10-2010, 05:34 AM   #4
Senior Member
True Car Nut
 
rjolly87's Avatar
 
Join Date: Jun 2003
Location: Las Cruces, NM
Posts: 6,855
Thanked 298 Times in 246 Posts
rjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant futurerjolly87 has a brilliant future
Default

It depends on the vehicle, if it is the system that has a resistor pellet in the key, then they would be correct, if it is the PassKey3 system <no resistor pellet, and PK3 at the top of the key>, assuming the sensor is at fault, then yes BXX is correct. This could be an issue as simple as trying another key also. You are not trying to use a copy are you?
rjolly87 is offline   Reply With Quote
Old 12-28-2011, 05:33 PM   #5
Junior Member
 
Join Date: Jul 2011
Location: North Central Indiana
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
RogerD is on a distinguished road
Default

This problem described is over a year old from my reply, but in case anyone else stumbles across it....

For my 2002 Grand AM V6 if the security system is activated the starter will not turn over. The BCM (under glove box) monitors for the magnets to engage a switch in the ignition switch assembly (PassLock Sensor). For me, it'* a yellow wire on pin B6 of the 24-way grey connector on BCM. When the key is in the START position this voltage will change from about 5v to about 2.5v. If it doesn't then a data message is sent over to the PCM (above hood release lever) and the PCM will not pull a signal low to ground the bottom side of the STARTER relay located in the fuse block under hood.

Unrelated to security, however, are a couple other items in the circuit. There is a switch in series with the START voltage in the clutch or auto transmission lever. Clutch must be in or auto must be in PARK or NEUTRAL to pass the START voltage to PCM. Another START voltage goes through a fuse under hood that then feeds the top coil side of the STARTER relay also in the same under hood location. The switch side of this relay is fed from battery through yet another fuse in same under hood location.

I am still searching for the solution to my no-start, but I did stumble across severe corrosion on several BCM pins. After cleaning pins still no start, but I did not remove pins in connector to clean. Maybe that'* it.....
RogerD is offline   Reply With Quote
Old 01-23-2012, 10:47 PM   #6
PopaDopaDo
True Car Nut
 
popatim's Avatar
 
Join Date: Jan 2005
Location: NY
Posts: 4,957
Thanks: 0
Thanked 0 Times in 0 Posts
popatim is on a distinguished road
Default

Check the ign cylinder wires that come down the steering column. Theres two wires inside a white sleeve if I remember right and break out at a connector above the brake pedal. I had this exact same problem and it turned out a previous owner had and removed a remote starter. For a remote starter you have to bypass the passkey system by cutting those wires and splicing an equivalent resistor (of the chip in your key) between them on the connector side. In my case when they removed the resistor they only hooked up the ign cyl wires by twisting them together and the twist was my intemittant connection. My fix: reinstall the $1.50 worth of resistors and never deal with passkey again...
popatim is offline   Reply With Quote
Old 01-24-2012, 07:42 AM   #7
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

the resistor only bypasses the key part there is still more to the problematic system than that.
jwfirebird is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Alero Won't Start. Security Light xxfrench91xx Oldsmobile 6 10-12-2011 01:52 PM
Car won't start because of "Security System" jjvm34 1992-1999 1 07-09-2005 11:00 PM
93 SSE security light on car won't start Mc9C1 Everything Electrical & Electronic 5 05-12-2005 01:40 PM
Security Light On - Car Won't Start mussinc 1992-1999 7 01-04-2005 10:59 PM
Security Light Comes on While Driving Palmettokid 1992-1999 1 07-04-2003 10:29 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 02:53 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.