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I want to disconnect the anti theft system on my 2003 gmc sierra I think its stopping it from starting

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Posted on Apr 23, 2017


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Posted on Jan 02, 2017


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2003 GMC Sierra 1500. I was backing into my driveway and the truck just died. No electrical power at all. None! Could the problem be associated with the anti-theft system?

cud--but test alternator and make sure batt is holden 12.6v at all times--also inspect wiring and chec fuses and maxi fuses under hood--with older cars components wear and gain resistence too causing blacout until vehicle cools down

Oct 06, 2013 | 2003 GMC Sierra 1500

1 Answer

My gmc searra has all power when i turn on the ignition but does not crank to turn on

If the battery is fully charged, and you have lights but no crank, the problem could be the anti-theft system, or the neutral safety switch, or the starter among other things.
You would need to check for power on the small wire on the starter solenoid when the key switch is in the start position.

Jan 25, 2013 | 2003 GMC Sierra 1500

1 Answer

Need to reset the theft system on gmc serria 04

relearn of key less entry is done by crank engine slightly, leave key on until theft light quits flashing. turn key off then try to start. if no start and light is still flashing, anti theft sensor in key tumbler or body module fault..

Dec 23, 2012 | 2004 GMC Sierra

1 Answer

Disconnect alarm for ford expdition 2003

Firstly what is the problem as to why you need to disconnect the anti-theft system? Also you can't just disconnect the Anti-theft as it is incorporated within the starting and ignition system.The only way it can be bypassed is through a Ford Dealer who will have the equipment and coding to disable it.

Mar 22, 2012 | 2003 Ford Expedition

1 Answer

1998 Gmc Yukon wont start due to Anti Theft alarm system how do I get Yukon to start again

Maybe by disconnectting your battery and reconnectting, you might be able to reset system.

Mar 04, 2012 | 1998 GMC Yukon

1 Answer

Lost my key and have The column torn apart trying to start the truck. It's a 2003 GMC 1500 SLT

truck has a pass- key anti-theft system you will have to take the VIN # to GM and have them make you a key you can not hot wire or bypass the system, the truck will nut run with out the key....sorry

Apr 17, 2011 | 2003 GMC Sierra

1 Answer

Rx8 2008-My battery was dead after being stored for 5 months. I did not not disconnect the battery (I know I should have). I had my battery jumped with my husband's car. As soon as I connected the cables...

You should have disconnected the battery and fully charged it before starting the car.
The low voltage may have damaged some of the electronic components in the alarm system.
Charge the battery fully, then reconnect it and see if that helps.

Apr 16, 2011 | 2006 Mazda RX-8

1 Answer

How does a GMC Anti-Theft Work?

anti theft in you gm vehicle is to prevent some body from driving away with your vehicle. Not to prevent someone from breaking into it. You need to have a secondary alarm system installed. This will protect the contents of your Denali. Mike

Jan 06, 2009 | 2006 GMC Sierra

1 Answer

Truck won't start

the ignition baril that contain the chip for the theft system is defectif just change the baril our trouble gonna be gone cheers pierre

Jun 28, 2008 | 2003 GMC Sierra 2500HD

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