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  1. Electrical/Lighting/Security
    I have an 08 colorado 2.9 I've had for 3 years now. Was having the issue with the passlock and not starting, after the 10 minute wait it would start.in the 3 year of ownership its happened about 5-6 times.a week ago I was clearing the dtc which was for the purge value which has been coming on...
  2. Electrical/Lighting/Security
    I have a 2011 Chevrolet Colorado with the 3.7 5-cylinder engine. I've had the truck for 13 years, bought it brand new back in the day. I forgot how long it had been since I replaced my battery, and my battery was getting super low. It actually had been 7 years! Recently, when it was super cold...
  3. Electrical/Lighting/Security
    I recently got a 2012 Colorado and I decided to install a headunit, speakers, and amplifier from Crutchfield. I initially installed just the headunit and speakers using the GMOS-01 module and had no issues for a couple of weeks. I then had time to install the Kenwood Amp, essentially bypassing...
  4. I4/I5 Engine & Drivetrain
    I looked at a couple posts about the passlock and antitheft system in these trucks, and I'm fairly sure I know what my issue is but the truck doesn't crank/turnover at all and some people say passlock issues lets it crank or turnover but not start. (I'm not sure what the difference is, but mine...
  5. Electrical/Lighting/Security
    I posted the same message on colorado fans. This all started in feubruary. I replaced battery terminals, which triggered the anti theft. i would try cranking, and the light would flash and nothing would happen. I then relearned the key, and used the cut the wire method, which worked great for...
  6. I4/I5 Engine & Drivetrain
    Hi, I posted while ago about similar issue (used to have loss of comm codes). Problem went away eventually for like a year (can't really connect it to any fix attempts). 2007, i5, 4x4, ext cab now I'm back to intermittent no power to radio, dash and occasional no start. No codes other than...
  7. New Member Introductions
    Hi guys, I got my truck about 2 years ago and took an interior wreck and made it nice. I updated the seats to the leather hummer both front and rear, sound dampened the cabin, update exhaust with Magna Flow, and then put in a new Sony CarPlay stereo and speakers. Sadly last week someone broke...
  8. New Member Introductions
    Hello everyone, I have a 2006 Chevy Colorado with the 3.5L in it. For years the truck has struggled with the 10 min no crank concerning the passlock system. I have watched many videos of individuals resolving this issue by installing a brand new sensor by taking it off the ignition lock housing...
  9. I4/I5 Engine & Drivetrain
    Just wanted to share my experience fixing this problem. Truck info: 2009 Crew Cab LT 2.9L inline 4 2WD automatic transmission Mode of failure: The Truck won't start when turning the key, instead, a "click" can be heard behind the cluster, Lock icon on the dashboard light up and stays on. The...
  10. How-To: Lighting & Electrical
    Hi Guys, I'm new to the site however I have been referring to it for over a year. I am forever grateful for the information here. This being said, I am having some classic passlock issues. Ever since I got the vehicle about a year and a half ago, I've had issues with passlock traumatizing my...
  11. Engines/Performance/Tech Questions
    When I bought this 2WD Extended cab truck 2 years ago, I LOVED it. Up until this past summer, I LOVED it. Now after dealing with this insane passlock system for the past 6 months, I HATE IT! I am seriously getting ready to sell this next week if someone on here can't help me. First it was just...
  12. Electrical/Lighting/Security
    Hey newbie to the forums. Been reading this one for over two years since I first got my 'rado. I have a '07 Chevy Colorado with Automatic transmission, and no power anything. I have recently order and purchased an Electric-Life kit with power locks, keyless entry, and alarm system. I have the...
  13. Electrical/Lighting/Security
    Hello, so I just bought my second 355 about four months ago since I missed my first one so much. Anyways its got 121,000 miles, 06 canyon Z71. ok so it started about a month ago, I went to start my truck and it clicked and everything went dead. So I assumed it was passlock, waited a half hour...
  14. Schematics
    2009+ Immobiliser (passlock) Schematics
  15. Engines/Performance/Tech Questions
    Hey guys, I have a question I couldn't find the answer for exactly, and I don't know enough about the system to figure it out myself. I have a 2008 I4 Colorado with a remote start installed. I use the remote starter pretty much everyday, especially in cold weather but even summer to get the...
  16. Electrical/Lighting/Security
    I've read through the forums.. tried millions of ways nothing is working.. any other ideas? I just cut the wire to the passlock in desperation, and still not starting. I unplugged my PCM to check the prongs because I am throwin a 303 cylinder misfire. New coil, new spark plug.., it's still...
  17. For Sale
    Hey guys, I have a brand new New Rockies Passlock Bypass unit that I bought last summer. Never put it on. I have it on Ebay right now as well. I'd like to get $140 for it. New Rockies GM Passlock Bypass | eBay NEWROCKIES Inc | Bypass, disable and remove VATS, PASSKey and Passlock Security...
  18. How-To: Performance & Maintenance
    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...
  19. Electrical/Lighting/Security
    Hi! I'm new to this forum n Jus picked up my 06 Colorado crew cab...I ve already discovered this standard passlock trouble n figured out that's wat it is....sometimes it doesn't start, wait 10min. Etc. Jus wondering if anyone has a reliable way to defeat it? I figure this has already been...
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