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Security light blazer - 2002 Chevrolet Blazer

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Copy this link into your browser. There's a good rundown of the security system, how it works, and how to beat it yourself.

Posted on Feb 10, 2012

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Posted on Jan 02, 2017

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Why is the car not starting and security light on for 2001 blazer

Because the SECURITY light is a warning indicator for the ant-theft system . If the light is lit the PCM - engine computer disables the fuel injectors an or in some cases the starter . Your best bet have it towed to a qualified repair shop .

Nov 14, 2016 | 2001 Chevrolet Blazer

1 Answer

01 blazer security light on theft deterant code given truck will try to start then die. please help before i have to put another penny in it. Is it the passlock, bcm or what. there is no chip in my ke

check with code scanner to see if it is passlocked can barrow with deposit from auto zone the passlock will only turn off fuel with starting fluid it should run for a few sec.

Sep 19, 2012 | 2001 Chevrolet Blazer

1 Answer

99 blazer security light stays on

The security light means the computer is not reading the chip in the key.
You should have a sensor in the key lock and a chip on the key programmed for the security system.
I would try a spare key first. If you don't have one, you can get one from the dealer or some locksmiths.
If you know you have a good key, the problem may be with the sensor in the lock cylinder.

Jul 23, 2012 | 1999 Chevrolet Blazer

1 Answer

My blazer will start but wont stay running long and the security light is on too and this after i put a new motor and trans in it it has been sitting over a year so i was needing help

By switching out the motor, you have most likely interrupted the antitheft system. The security light proves this. The engine starts, looks for the proper key code, doesn't see it, shuts down the injectors. There is a way to bypass this. Read thru this web page. Should find everything you need to know.

Jan 10, 2012 | Cars & Trucks

1 Answer

I have a1999 gmc blazer has no eletricity or current going to coil.4.3 motor..I changed the ignition module still nothing

This might be due to the anti theft security system. Oas there a light on the dash that says "security"? If so, check out this link.

Jun 24, 2011 | 1999 Chevrolet Blazer

2 Answers

1998 Chevrolet Blazer LT 4-Door, 4.3 Liter/V6 engine. Security light stays on and will not go off. How do you get the light to turn off?

Try turning the ignition on ( but don't start ) and push the drivers door unlock button. The light should go out. Good Luck.

Jan 04, 2011 | 1998 Chevrolet Blazer

1 Answer

My chevy blazer wont start after having the security light on for a few days

If you left the security light on it probably killed your battery. You will need to jump start your vehicle or charge your battery as well as turn off your security light.

Dec 27, 2010 | 2000 Chevrolet Blazer

1 Answer

99 Chev Blazer security light came on

Very common GM problem.
Put key in ON position (do not start) for EXACTLY 10 minutes. As SOON as the light turns off, then IMMEDIATELY start the motor

Nov 20, 2009 | 1999 Chevrolet Blazer

1 Answer

1999 s10 security light is staying on truck wont

if you have a spare key try that sometimes a worn key will trip the security

Jun 13, 2009 | 2000 Chevrolet Blazer

2 Answers

2002 Chevy Blazer

take the pos cable off leave it off for a bit and see if it wont reset

Aug 20, 2008 | 2000 Chevrolet Blazer

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