Holden Colorado Alarm Upgrade

Update: June 2019

In 2017 the Colorado model range was updated. The Z71 has factory Remote Start and all models now have window closure.
More details about the updated Holden Colorado can be found here…

The current generation Holden Colorado (released in 2012) comes with a factory alarm system and is becoming quite a popular option for tradies.

The factory alarm which works with the Holden flip key covers the doors and the bonnet but has no internal movement sensor. The alarm uses the vehicles horn rather than a siren.

If the Holden remote key has a flat battery the alarm can be disarmed by placing the key in the ignition where it will recognise the transponder chip in the key.

Holden Colorado Alarm

Holden Colorado

Canopy Protection

The factory alarm lacks the option to protect your tools if you store them in the back.

I can add a PIR sensor to work with the factory alarm for $200.00, I can also add a reed switch to the alarm if you have a hard lid.

PIR Sensor installed in a 2012 Holden Colorado

PIR Sensor installed in a 2012 Holden Colorado

Upgrading the Alarm

If you wish to upgrade the factory alarm to give internal cabin protection and siren then I highly recommend the Cobra AK4615.

Below are some photos of how the Cobra looks in the Colorado:

Vodafone Automotive alarm in Holden Colorado

Cobra LED Over-ride switch in the Holden Colorado

Holden Colorado Alarm ultrasonic movement sensors

Cobra Ultrasonic Sensors in the Holden Colorado

Colorado alarm works with the factory key

The alarm works with the factory remote

Remote Engine Start Alarm

If you want to get really flash then consider a Viper Remote Start Alarm. It works really well in the Colorado.


About Julian

Owner and Installer at Obsessive Vehicle Security Limited. More details here... Please keep Comments relevant to the post and use the Contact form for enquiry's
This entry was posted in Cobra, Holden, Remote Engine Start, Upgrade Alarms and tagged . Bookmark the permalink.

6 Responses to Holden Colorado Alarm Upgrade

  1. Elone says:

    Hi there,

    Is it possible to install an alarm on a 2011 Holden Colorado with canopy in Auckland? If so, how much will it cost?

    Also, if we opt for an alarm does this mean we cannot ever take the canopy off for slightly taller objects etc or open the windows if I put my dogs in the back?

    Many thanks.

  2. Julian says:

    Hi Elone,

    I only cover Wellington. If you are considering driving down this way then use the contact form an I can email you some pricing options.


  3. Geoff says:

    Hi ,

    My ex has a 2018 Colorado that has a factory alarm that randomly goes off . Not always in the same area either
    She needs to find out why . Please help

  4. Julian says:

    I suggest that you contact your local Holden dealer seeing that it is a factory system. They should be able to run a diagnostic test.

  5. Paul says:

    I would like to install a remote start kit on my 2018 Colorado. Are you able to provide a quote please?
    Wellington area

  6. Julian says:

    Hi Paul,

    Please use the contact form or give me a call if you’d like a quote. The blog is public so best not to put all your personal info here.

    This page covers the FAQ’s

    The Remote Start systems I have can be found here…

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