# And old problem with Colorado and Canyon with immobilizer (no start sometimes)

**URL:** <https://community.cartalk.com/t/and-old-problem-with-colorado-and-canyon-with-immobilizer-no-start-sometimes/173790>\
**Category:** Maintenance/Repairs\
**Tags:** gmc\
**Created:** [January 2, 2021, 4:54pm UTC](https://community.cartalk.com/t/and-old-problem-with-colorado-and-canyon-with-immobilizer-no-start-sometimes/173790 "2021-01-02T16:54:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![carguy7766](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@carguy7766](https://community.cartalk.com/u/carguy7766)\
**Post date:** [January 2, 2021, 4:54pm UTC](https://community.cartalk.com/t/and-old-problem-with-colorado-and-canyon-with-immobilizer-no-start-sometimes/173790/1 "2021-01-02T16:54:12Z")

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It has been a while for me on this forum. I have an old problem. Since it only happens about every 3 months, I usually just forget about it. My 2007 GMC Canyon just sometimes does not start. It turns over, no start. This is a common problem with GM vehicles it seems. If I get in the vehicle and the red lock light (immobilizer) is blinking, the truck will not start. If I wait about 5 minutes, the light is then on with no blink and it starts. The problem is everyone seems to have a different fix for this. Such as, re-flash computer, replace plastic reader at end of ignition switch, live with it. Any experience or ideas on this one? Most times it is not a big issue, but one of these days it will happen at a bad place. Oh, my keys are all solid with no transponders. My son thinks maybe the previous owner put a transponder key under the plastic trim so any key will work. Any help for me?

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [January 2, 2021, 6:26pm UTC](https://community.cartalk.com/t/and-old-problem-with-colorado-and-canyon-with-immobilizer-no-start-sometimes/173790/2 "2021-01-02T18:26:39Z")

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Seems to be very common on this vehicule if you read all the complaints.

> **[2007 GMC Canyon Electrical System Problems](https://www.carcomplaints.com/GMC/Canyon/2007/electrical/electrical_system.shtml)**
>
> The 2007 GMC Canyon has 12 NHTSA complaints for the electrical system at 72,919 miles average.

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**Author:** ![carguy7766](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@carguy7766](https://community.cartalk.com/u/carguy7766)\
**Post date:** [January 5, 2021, 1:45pm UTC](https://community.cartalk.com/t/and-old-problem-with-colorado-and-canyon-with-immobilizer-no-start-sometimes/173790/3 "2021-01-05T13:45:32Z")

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Thanks for the reply. I am hoping someone says, “yep, had this problem and this is how to fix it.”  
I have heard many possible repairs, but too many are different so I am not sure what to do first. I hate to just keep throwing parts at it. Other than this, pretty good vehicle. Runs good, and not a bad ride.