# Reprogramming the Passlock II Security System

**URL:** <https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155>\
**Category:** Maintenance/Repairs\
**Created:** [June 11, 2008, 1:52pm UTC](https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155 "2008-06-11T13:52:50Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Blazer\_Blues\_1999](https://avatars.discourse-cdn.com/v4/letter/b/ccd318/32.png) [@Blazer\_Blues\_1999](https://community.cartalk.com/u/Blazer_Blues_1999)\
**Post date:** [June 11, 2008, 1:52pm UTC](https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155/1 "2008-06-11T13:52:50Z")

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Does anyone out there know how to re-program the security sytem for my 1999 Chevy Blazer?

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [June 11, 2008, 2:46pm UTC](https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155/2 "2008-06-11T14:46:47Z")

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I know how to do it with the Tech2 (Dealer Scanner) Maybe alternate procedure in owners manual.

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**Author:** ![SteveF](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/stevef/32/2_2.png) [@SteveF](https://community.cartalk.com/u/SteveF)\
**Post date:** [June 11, 2008, 3:04pm UTC](https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155/3 "2008-06-11T15:04:15Z")

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Yeah, it ought to be in the owner’s manual.

There are many internet entries on disabling or bypassing PassLock II. Do a Google search on Passlock II and select the site of current interest to you.

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**Author:** ![TwinTurbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@TwinTurbo](https://community.cartalk.com/u/TwinTurbo)\
**Post date:** [June 11, 2008, 3:12pm UTC](https://community.cartalk.com/t/reprogramming-the-passlock-ii-security-system/15155/4 "2008-06-11T15:12:21Z")

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Er, if it was easy or anyone could do it, that would kinda defeat the purpose of it dontchathink?

The owner’s manual should read, “Take it to a qualified repair center for reprogramming”. This is where they verify you are the legal owner of the vehicle before they reprogram any security system…