How to reset the anit theft in 2008 gmc sierra

Question edited for clarity.
Question moved to model category.

Is your security light flashing? It sounds like the engine immobilizer is activated.

How do I reset my 2003 chevy silverado security system?

Vehicle History https://www.vehiclehistory.com > questions > how-do-...
Apr 9, 2020 - The first thing You need to do is open the driver's side door, and sit down inside. Next, place Your key in the ignition, and turn it to the on ...

6 answers · Top answer: Resetting the 2003 Chevrolet Silverado security system is easy, and takes about 5 to 10 minutes. The first thing You need to do is open the driver's side ...

How do I Reset the Theft Deterrent System "The Sequence?"

Diesel Place https://www.dieselplace.com > ... > Electrical
Dec 26, 2008 - Try This: · 1. Put the key into the keyway and turn it to the ON (RUN) position. · 2. Within 1 minute after the indicator light goes off, turn the ...

Gmc Sierra 1500: I need to reset the security on my 2004 gmc

JustAnswer https://www.justanswer.com > GMC Questions
Jan 10, 2013 - 30 minute GM relearn procedure: 1-Turn ON the ignition, with the engine OFF. 2-Attempt to start the engine, then release the key to ON ( ...

1 answer · Top answer: HI, What is happening - is the security light staying on and truck not starting, or is the ...

How do you reset the computer and or the passlock, anti

JustAnswer https://www.justanswer.com > Chevrolet Repair
Jan 4, 2010 - Bump the key into the start position then leave it in the on position for 10 minutes, after 10 minute shut vehicle off for 5 seconds and ...

1 answer · Top answer: Ok, let me know. Thanks

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Chevy Silverado and GMC Sierra Fuel Pump/Fuel System - Edmunds.com

forums.edmunds.com > Chevrolet > Chevrolet Silverado 1500

Mar 20, 2011 - 30 posts - ‎19 authors
Learn more about Chevrolet Silverado 1500 at the Edmunds.com Car Forums! ... problem with my 2000 GMC Sierra 1500 4.8LTR V-8 you described in your post. .... Ihave a 2008 gmc sierra last 8 vin 8Z160870 4WD pickup was ... removed power and truck died. have no power at 20amp pump fuse, key on ... Chevy Silverado and GMC Sierra Starting Problems ...
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SilveradoSierra.com • Cranks but wont start. Fuel problem ...

Definitely no reset button. Cranks but no start?

It sounds like a theft deterrent circuit has been activated.. Check your security device handbook on how to reset it.

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..

Then a problem is occurring in the system, have the dealer scan it and see what is keeping it from starting. It may not be the alarm system, other problems may be occurring.

WHEN YOU TRY TO CRANK IT ,TURN HEAD LIGHTS ON .HAVE SOME ONE WATCH THE HEAD LIGHT TURN KEY AND SEE IF HEAD LIGHTS DIM IF THEY DO MOST LIKELY STARTER IF THEY DONT THEN A THEFT DETERENT PROBLEM

Check engine light will go out when the management computer detects no more errors. Pull the codes and repair what they indicate.

you should be able to go and push the trip reset button on the cluster

Where i s oil drain plug?
GMC 2008 Sierra