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I HAD MY KEY LOCK AND IGNITION WIRE CHANGED. THE SECURITY

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LIGHT STAYS ON AND THE...
I HAD MY KEY LOCK AND IGNITION WIRE CHANGED. THE SECURITY LIGHT STAYS ON AND THE TRUCK WONT START.
Submitted: 6 years ago.Category: Chevy
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Answered in 14 minutes by:
3/8/2011
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29,591
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified
GM Tech (Cam) :

Hello, I'm Cam. Please include all the details about your issue so I can accurately advise you. I cannot see your vehicle so please be detailed.

GM Tech (Cam) :

Turn the key on, with the engine OFF.Try to start the engine, then release the key to ON, Engine will not start. Watch the security telltale, after about 10 mins, it will turn OFF.

GM Tech (Cam) :

Turn OFF the ignition, and wait 5 seconds.

GM Tech (Cam) :

Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. You must turn the ignition OFF before attempting to start the vehicle.

GM Tech (Cam) :

Start the engine .

GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29,591
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified
GM Tech (Cam) and 87 other Chevy Specialists are ready to help you
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Customer reply replied 6 years ago

i have tried that but the light doesn't go off. what else if possible that i can do?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Does it flash when you do try to start?
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Customer reply replied 6 years ago
it does
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Does it stop flashing after 10 mins, and did it operate properly prior to replacing the parts?
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Customer reply replied 6 years ago
i had that problem before and the 10 mins worked well, but then it wouldn't work after i have been trying that for months. i finally bought the parts and installed them and it won't start since
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
ok was this the whole lock cylinder and housing?
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Customer reply replied 6 years ago
the whole lock cylinder with keys
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Ok, did the new cylinder have a magnet on it?
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Customer reply replied 6 years ago

no

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Then you were sold the wrong cylinder. With out the key, the passlock sensor is not triggered and security remains operational preventing the engine from starting.
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Customer reply replied 6 years ago

so i should get on with a small magnet at the side?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
it must have the magent on the side of the cylinder.
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Customer reply replied 6 years ago
ok then i'll get it now
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
ok
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Customer reply replied 6 years ago
no of the stores don't have the small magnet at the side. the original lock cyclinder had one but it was already damaged, i just installed the small clip. itst here a way i can fit a small piece of magnet in that slot?
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
The strenght of the magnet may not be correct and it may not activate the security sensor as it rotates but I you can try to take the old magent out and attach it with a spot of glue.
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Customer reply replied 6 years ago
well thats the point its damaged , think it was dry rot. so it crumbled when trying to remove it.now i need an alternative
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Ok, you may need to get one from a dealer. It can be keyed to the cut in your truck so you can have the same key.
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Customer reply replied 6 years ago

thanks for your help i just have to spent more money then

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
As you can see, you get what you pay for. There is an alternative, do you have access to a resistor that is 2200 ohms?
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Customer reply replied 6 years ago
i could buy one at radio shack
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Get one, cut the yellow wire in the group of 3 wires, red, orange black and yellow. Attach the yellow on the body side of the cut to one end of the resistor and the other end to the orange black. Do the relearn and you just bypassed the passlock cylinder itself.
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Customer reply replied 6 years ago
what do you mean by relearn?
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Turn the key on, with the engine OFF.Try to start the engine, then release the key to ON, Engine will not start. Watch the security telltale, after about 10 mins, it will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. You must turn the ignition OFF before attempting to start the vehicle.

Start the engine .
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Customer reply replied 6 years ago

so the other end of yellow wire from the ignition switch will just be left without been connected?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
correct.
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Customer reply replied 6 years ago

one more thing how can i know that the resistor is 2200 ohms, do they have it written on them?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
They go by the colour of the bands.
It will have 3 red bands and then a silver or gold band.
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Customer reply replied 6 years ago

i have tried the resistor, the light didn't go off. do i have to completely cut off the yellow black also or just add the resistor to it?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
The yellow to the ignition housing must be cut or it will not work.
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Customer reply replied 6 years ago

i did that already and connect the body wire to the resistor, then connected the other end of resistor to yellow and black wire. must i completely cut the yellow and blk wire also?

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Dnt you mean orange black wire and the solid yellow?
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Customer reply replied 6 years ago
i cut the yellow wire already, but don't i have to connect the resistor to the orange black wire? do i have to completely cut that wire also(orange blk) or just connect the resistor to it?
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
You dont need to cut the orange black, but you can.
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Customer reply replied 6 years ago

i did light still didn't go off and won't start

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
The relearn takes 30 mins I a, not sure how you can be done by now, and are you trying to start then releasing the key back to run and then starting the timer?
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Customer reply replied 6 years ago
i did that once and i had it on the relearn for 45 mins. i just cut the orange blk wire. so its still on relearn
Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Ok, that is correct. Wait the 10 mins, then turn it off and do the second round of the relearn.
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Customer reply replied 6 years ago

still didn't work. so i give up seems there is no way that could work

Chevy Mechanic: GM Tech (Cam), Chevy Technician replied 6 years ago
Ok the problem is somewhere else then, possibly the BCM.
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GM Tech (Cam)
GM Tech (Cam)
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