Question about 2005 Chevrolet Colorado

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2005 Chevy Colorado anti theft My truck shows the anti theft light on and it will not crank, how do I reset the computer?

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Resetting computer wont fix or by-pass security / anti-theft system ==check fuses relays and key if key worn or damaged will not let vehicle start need to fix problem not hit a reset

Posted on Dec 15, 2016

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  • Chevrolet Master
  • 12,168 Answers

There is no magical reset procedure , you have it scanned for DTC'S -diagnostic trouble codes ! Then tested and repaired . Which means you have to take your vehicle to a qualified repair shop .

Posted on Dec 15, 2016

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Posted on Jan 02, 2017

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SOURCE: anti theft dash light is blinking on my 1998 rodeo

I'm assuming its an original alarm or system that came from factory or dealer. When the light blinks is because the alarm is activated. Look underneath the radio the alarm brain might be there. There will be a label on it saying alarm or security system etc. Disconnect the harness to it and try operating your vehicle.

Posted on May 06, 2009

  • 54 Answers

SOURCE: how to reset the check engine light on a 2005

remove the battery terminals for about 15 mins, that will reset your computer, if you turn it back on and get the same check engine light there is an underlying problem, only certain codes will trigger that light to come on, you'll need to take it to a mech to be sorted sorry to say, hope all goes well for you, matt

Posted on May 15, 2009

  • 66 Answers

SOURCE: the anti theft system light stays when i drive my

Folllow these steps:
turn ignition to "ON" (dont start the car)
leave it open for 10 minutes.
Turn ignition to "OFF" wait two seconds and turn it back to "ON"
leave it open for 10 minutes.
Turn ignition to "OFF" wait two seconds and turn it back to "ON"
leave it ope for 10 minutes.

Turn it on, start the car normally and have a safe trip. Your system has just relearnt the security passkey.
Good luck.

Posted on Jul 09, 2009

matney68
  • 426 Answers

SOURCE: chevy colorado loss of power

take it to local parts store that scans for codes for free, you will get a print out with any codes that are set and go from there

Posted on Jul 30, 2009

  • 396 Answers

SOURCE: 2005 chevy colorado,5 cylinder, intermitently the

Start keeping a log. This will help you and the shop if you take it in. Each time it happens, Was it Cold, Sat overnight, just finished running an errand and up to opeating temperature? these are the things that are needed to try to duplicate it to being stubborn to start.

Posted on Feb 01, 2010

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2 Answers

I put a used ignition cylendar in my 05 colorado ..how do i by pass the anti theft so i can start truck


You cant. The key needs to be programmed to the car. You may have to have a locksmith or dealer do it as it may require a special computer to do

Oct 16, 2016 | 2005 Chevrolet Colorado

1 Answer

Why the anti-thief device is keeping my truck from starting?


I replaced my computer at 53,000 miles and it starts up OK now with an occasional issue with starting like it has crud in the line or something, but the resetting the key after a miss does require the 15 minute wait. Had to do it once since the computer was replaced, but the issue before was the anti-theft system would shut it down after starting every time requiring a tow truck to get it to the shop. $700 for the computer chip replacement.

Jul 10, 2014 | 2007 Chevrolet Colorado (Extended Cab) New...

1 Answer

How do I reset the truck to start after the anti theft lock has been activated?


Insert correct key in to Drivers door and turn clock wise then turn counter clock wise unlocking and resetting security system. This usually dose the trick HUCK.

May 06, 2017 | Chevrolet Cars & Trucks

1 Answer

How do i disable a anti theft system on an 2004 chevy venture that wont start


how do u turn off the anti theft on a 2005chevy venture

Jun 09, 2012 | Cars & Trucks

1 Answer

Anti theft problems with 05 chevy colorado


This an all too common problem on GM vehicles. Fortunately there are ways to beat this without taking to the dealer. Go to this link and try the quick fix. If that doesnt work you'll have two options, taking to the dealer to get things diagnosed and replaced, or bypass the system entirely. This link will help you.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Oct 20, 2011 | 2005 Chevrolet Colorado

1 Answer

Trouble shooting 05 colorado antitheft system. the anti theft light is lit and the vehicle will not start. we tried to unhook the battery, wait an hour and hook up, it did not work. what can we do?


do you have remote keyless entry? if you do use the remote to unlock it if not use the original key to unlock the drivers door that should take it out of theft mode.

Oct 20, 2011 | 2005 Chevrolet Colorado

1 Answer

2004 chevy impala 6 cyl. Would not start. Lights etc worked, battery okay. Engine would not turn over. No starter cranking. Call AAA they said to turn the key on for 10 minutes and try again. third time...


it resets the anti theft system, so vehicle will start. all gm vehicles from 97-2005, contain a anti theft system called a passlock system. go to tubesound.com to disable passlock for good. (just type in your problem when page comes up).

Aug 20, 2010 | 2004 Chevrolet Malibu

1 Answer

07 ford focus anti theft light flashes all the time


If the security or anti-theft light is flashing when you attempt to start your car, and the engine does not crank or does not start, you have an anti-theft problem. The system may not be recognizing your key's key-less entry signal, or there may be a fault in the anti-theft module or wiring.
There is a reset procedure to stop this anti-theft light flashing.many a times this helps The reset procedure is as follows:-- Reset the alarm by locking and unlocking the drivers side door.Do this a couple of times and then check it will reset the factory security system . If the reset procedure does not helps then its time to get the anti-theft system checked.There is a short circuit in the anti-theft system wiring. For more detailed help on this anti-theft light blinking issues please click on the link below http://www.aa1car.com/library/troubleshoot_antitheft_system.htm
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May 18, 2010 | Cars & Trucks

2 Answers

Chevy Malibu 2005 4 cylinder will crank but won't start. this is an emergency!!! please help


anti theft system light blinks car won't start, crankes but won't start help?

Jul 16, 2009 | 2005 Chevrolet Malibu

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