Vehicle Anti Theft System Reset Override Technique-GMC Sierra or Silverado

After replacing the steering column in the truck it was necessary to replace the Vehicle Anti Theft System Reset Override because it would only start for a couple seconds and then die. I was initially going to try to bypass it, however, a quick call to the chevy dealer (thank you!) revealed a simple sequence of operations on how to reset it. The trick is to turn the key to the "ON" position, leave it for 1 hour like this, then start it up. You must ensure you have a nice fresh battery in order to do this or even place a battery charger on your battery will you do it so it won't go dead. It should fire right up.

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so I put a new steering column in the truck here's what's happening start run for a minute and that's it so what's happening is the alarm here anti-theft right that light right there is coming on that tells me because I put this new steering column in and that the ignition switch on the ignition has been has been messed with so now the vehicle thinks it's getting ripped off so what I'm gonna do is attempt to bypass that so I can start this thing off it's a whole new steering column so I have to be able to do that and I don't want to take it to the dealer so I'm gonna try this first the trick the trick to I was looking at bypassing if I had clipping some wires I didn't want him but so the trick here is what I did was I just turned it to the on position and left it for an hour right so you got to have a fresh battery or fresh charge on your battery but you can hear my truck just started up right now so turn it on left it there in the on position with all the lights on for an hour

[jaywhittemore]

Was helpful thank you. It's aggravating when your truck won't run when it just did

[kennethbenn]

Man cant ty enough... Ive been trying everything, had 4 locksmiths look at my suburban no one could get it to start! Your video is the only one that worked for my 2001 suburban! Ty for sharing... I was so close to giving up...

[thediamondcutterz]

No lie this worked!! I have an 04 chevy avalanche and just had a new system installed. The battery was disconnected & wouldn't stay started after the install was complete... literally did this guys exact recommendation. 💯 works!

[cjsharp]

07 gmc sierra doing the same thing, I turned the key on, disconnected the negative battery terminal, tapped it 3 times and on the 3rd time kept it connected and screwed it back in. Turned the ignition off, shut the door then turned the ignition back on and waited 30 seconds and it fired up, have done this twice and both times it’s worked, rebooting the system/ computer.
The anti theft systems shuts the fuel supply off to the engine.

[pappy]

trying this now on my 2002 GMC Sierra . hope it works .
without my truck i can't work !

[drynalove]

I find this very difficult to understand, I purchased a refurbished ECU unit with programmed VIN, followed the instructions to relearn the key of the three 10-minute cycle programming. What is the difference between the three 10-minute programming cycle versus leaving the key in the onward position for 59 minutes to bypass the anti-theft.?
I would greatly appreciate clarity from anybody
The 59 min I got a start, the (3) 10min cycle no start.

[adamsartalamacchia]

Hey DIY TECH I just swapped columns also in my 00 gmc 1500 5.3 and it’s also starting for a second then shutting off so I’m doing what you just taught me tomm but I was just wondering if you turn the key back then start the truck or just start it from the on position after an hour And thank you for actually sharing the knowledge we salute you good citizen

[Chief]

I want to disable this system
I do not want to have this ever happen again

How do I do that ?

[abu_slooss]

To all car owners before u spend any thing even time check the ground wires especially the one behind the engine they might be lose or cut .

[abu_slooss]

To all Gm owners before u spend any thing even time check the ground wires especially the one behind the engine they might be lose or cut .

[roj]

My dashboard doesn’t light up no any instrument hands work sometimes and my headlights and interior lights flash when I crank up the truck

[texasmade]

I did the leave then key on for 10 min method once the security light comes off turn off for 10 seconds and turn it on sometimes takes 3 try’s but the light comes off

[lornagarside]

hi thank you for the tip. I think my story might help someone. My friends 2008 gmc1500 igniotion key was sticking badly and you had to jiggle it pretty good to get it to work. i googled it and watched a guy change its ignition cylinder and he goofed on the first attemt at codeing the new key. he redid the procedure and this time it worked. Ok, I bought one and installed it and goofed on the key codeing process. I goofed many times. I disconected the batery before each attemt. I put the old ignition cylinder back in and tried reseting it. nothing was working. finally the blinking anti theft light would not stop blinking and I could no longer try the 3x11 minute coding procces. I tried waiting an hour with key on. still kept blinking and would'nt start. I put the new cylander back in and left it on for an hour but the blinking light kept on blinking and it wouldnt start. ok it was getting late so I diconected the batery and put the charger on it. the next mornning I called the manufacters technition for the new key cylinder and explained my prolem. he said I may not have disconected the battery long enough between attemts. ok, now the battery has been disconected all night with the battery charger on it. I disconected the charger, hooked up the battery, put the charger back on the battery. I got in the truck and turned on the ignition.(the new replacement one). I watched the anti theft light blink for over an hour but it kept on blinking. ok, i just left it blinking for another hour but the light was still blinking. no start. ok, I decided to put the origanal key cylinder back in. I disconected the battery and put the charger on it while I reinstaled the origanal key cylinder. I then disconected the charger, hooked up the battery, put the charger back on the battery. I then prayed and turnned on the ignition and expected to watch a blinking light for 11 minutes. but no. the light went out and didnt come back on. I was confused and wondered if I should try cranking it over. I turned it all the way and it started up. I was happy confused and thankfull all at the same time. I thanked god too. I am not going to try that new key cylander again till I grow a new pair.

[CenturianCornelious]

Automobiles have become an electronic boondoggle.

[htxmac]

Anybody have an issue with the anti theft light NOT flashing?

[TheEberlyFam]

My husband just reinstalled the starter after having it rebuilt and nothing is turning on. Just the battery light and the light that says security . Could this be whyC

[DavidHinojos-uumu]

GM Procedure/fully charged battery or battery maintainer connected for 30 min. Procedure
1. Turn ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON. The vehicle will not
start.
3. Observe the SECURITY telltale, after approximately 10 minutes the telltale
will turn OFF.
4. Turn OFF the ignition, and wait 5 seconds.
5. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The
vehicle is now ready to relearn the Passlock(tm) Sensor Data Code and/or
passwords on the next ignition switch transition from OFF to CRANK.

[lauris]

Can anti theft system can be triggered by trying to remove radio without tools, now my car wont keep running for more than half second. How do i fix that?

[MisterHolaMan]

this did not work on 1990 cadillac, I cannot get this hour back.

[drynalove]

This worked but the car seems unstable, stuttering, jittery, and making a fluctuating noise if that makes sense.
Thanks in advance