How To: Do a Security Relearn

xronx · 01-21-2010, 08:04 PM

Disclaimer
The community here at 355nation.net urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your Colorado or Canyon service manual or contact a certified mechanic as not all GMT355 trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of 355nation.net or it’s ownership.

A 355nation How To presented by
xronx

Project Name
How To: Do a Security Relearn

Project Description
Preforming a Relearn on your Security System on your own.

Skill Level
Easy

Project Vehicle
Make: Chevrolet
Model: Colorado
Year: 2005
Engine: 3.5L
Power windows: yes
Sun Roof: No

Tools Needed
Your Keys

Project Time
1 hour or less

Project Cost
Effort

1. Attempt to start the truck by turning the key to the Start/Run position. Try to
crank the vehicle.
2. Observe that the vehicle fails to start and the security light is illuminated.
3. Release key to the ON/RUN position (not the ACC position or OFF)
4. Allow the vehicle to sit with key in the ON/RUN position for no less than 11
minutes. Security light will turn off after this.
5. When the light goes off, turn key to OFF position and allow the vehicle to
remain in the OFF position for no less than 30 seconds.
6. Repeat #1-#5 for four cycles or until vehicle starts.

**brewer15650** · 01-21-2010, 08:24 PM

Nice Thanks.

hikeetech · 01-22-2010, 01:22 AM

at step2, why would vehicle fail to start??? I am confused..

thethein11 · 01-22-2010, 01:24 AM

I believe its because the Passlock system cuts off the fuel supply but I am not positive about that.

kerad11 · 01-22-2010, 02:46 AM

wow...great addition. save people money like i motherfucker.

bpjr07 · 03-08-2010, 03:52 PM

does this also work when changing the ignition.. was reading up on the repair manual it says it will not turn on unless, i take it to a dealer to reprogram the bcm..is this what the dealer does for that? thanks

07ColoradoBLK · 03-08-2010, 06:35 PM

Yea that light comes on every 6months for me. But goes away after 20 mins of the truck turned off. Never cut my fuel supply off though. Drove 50miles with that lite on.

01-21-2010, 08:24 PM	#2
brewer15650 Quadruple O.G. Join Date: Apr 2007 Location: Latrobe PA 15650 Posts: 4,676 Member's Picture Albums	Re: How To: Reset the Security Passlock System Nice Thanks. __________________ MY Album MY Cardomain Donate To The Nation SINSITY KUSTOMZ

01-22-2010, 01:22 AM	#3
hikeetech Nation Affiliate Join Date: Apr 2009 Location: Ontario Posts: 440 Member's Picture Albums	Re: How To: Do a Security Relearn at step2, why would vehicle fail to start??? I am confused.. __________________ 2006 Colorado Z85 2wd, ReadyLift + 31" GoodYear Territory

01-22-2010, 01:24 AM	#4
thethein11 Clearing Shit Up Join Date: Jan 2009 Location: Long Island, NY Posts: 610 Member's Picture Albums	Re: How To: Do a Security Relearn I believe its because the Passlock system cuts off the fuel supply but I am not positive about that. __________________ - Billy >>>>>>>>>>>>>>Clear Reflectors For Sale<<<<<<<<<<<<<<

03-08-2010, 03:52 PM	#6
bpjr07 New To The Nation Join Date: Mar 2010 Location: Baldwin Park California Posts: 3	Re: How To: Do a Security Relearn does this also work when changing the ignition.. was reading up on the repair manual it says it will not turn on unless, i take it to a dealer to reprogram the bcm..is this what the dealer does for that? thanks

03-08-2010, 06:35 PM	#7
07ColoradoBLK Nation Elite Join Date: Apr 2008 Location: Saint Louis, Missouri Posts: 2,314 Member's Picture Albums	Re: How To: Do a Security Relearn Yea that light comes on every 6months for me. But goes away after 20 mins of the truck turned off. Never cut my fuel supply off though. Drove 50miles with that lite on. __________________ facebook '07Colorado Z85 LS

01-21-2010, 08:04 PM	#1
xronx Ron Lopes Join Date: Jan 2010 Location: Mass Posts: 716 Member's Picture Albums	How To: Do a Security Relearn Disclaimer The community here at 355nation.net urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your Colorado or Canyon service manual or contact a certified mechanic as not all GMT355 trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of 355nation.net or it’s ownership. A 355nation How To presented by xronx Project Name How To: Do a Security Relearn Project Description Preforming a Relearn on your Security System on your own. Skill Level Easy Project Vehicle Make: Chevrolet Model: Colorado Year: 2005 Engine: 3.5L Power windows: yes Sun Roof: No Tools Needed Your Keys Project Time 1 hour or less Project Cost Effort 1. Attempt to start the truck by turning the key to the Start/Run position. Try to crank the vehicle. 2. Observe that the vehicle fails to start and the security light is illuminated. 3. Release key to the ON/RUN position (not the ACC position or OFF) 4. Allow the vehicle to sit with key in the ON/RUN position for no less than 11 minutes. Security light will turn off after this. 5. When the light goes off, turn key to OFF position and allow the vehicle to remain in the OFF position for no less than 30 seconds. 6. Repeat #1-#5 for four cycles or until vehicle starts. __________________ Last edited by brewer15650; 01-21-2010 at 10:58 PM.

01-22-2010, 02:46 AM	#5
kerad11 Custom Title Garnered Join Date: Apr 2007 Location: clarksville, tn Posts: 9,175 Member's Picture Albums	Re: How To: Do a Security Relearn wow...great addition. save people money like i motherfucker. __________________ BBB crew...all day, every day.

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