Jump to content

Truck wont start. PassLock Security issues

enosez
 Share

Recommended Posts

carnau Enthusiast

carnau

Posted
Posted
On 4/12/2020 at 7:05 PM, JJP442 said:

Does the 30 minute reset work or is still needed if the truck starts after the first 10 minutes?

My truck is an ‘01 Yukon with 278,000 miles.

I’m wondering if it’s just time to replace the housing you mention due to age and mileage.

 

TIA,

Big John NYC

If it cranks after 10. No you don't have to do the 30.

  • 4 weeks later...
Keygun New Member

Keygun

Posted
Posted

Having somewhat same issue.  05 Tahoe LT.  Checking fuses and this happened. Radio just shows rearview cam. Key fob, door locks windows HVAC n stereo not working except rear cam view on. Even w no key.  Starts then dies.  However, if I pull radio fuse under hood everything back to norm except stereo. Replace fuse n back to nothing working?  Can anyone help.  Aftermarket HU

  • 4 months later...
Art Good New Member

Art Good

Posted
Posted

These Trucks can be a real problem.  I was wondering if you could give me some advice.  I'm working on a 2003 Silverado 2500HD 6.0l.  It was driving down the road and got a reduced power message then shut off.  When checking it out we had no communication with the computer.  So I replaced it programmed with the proper data and VIN#.  It would not re-learn the key.  I did what I should not have done and shorted the two wires on the passlock.  It learned and ran fine for two days and then the same thing happened.  Difference now is that the computer communicates fine.  I reconnected the passlock wires but the security light will not go out.  Every time I try to start it the starter kicks in then immediately kicks back out and so does the starter relay.  When testing the circuits the thing started, 20 times.  The next morning I went out and same thing starter just kicked in and out.  An hour later when I went to check voltages again it started, again I started it several times.  I'm afraid to take it anywhere because it may shut off or just not start again.  Could this now be a passlock problem?  Usually if its a passkey problem it will still start for 3 seconds and not just kick the starter back out like this truck is doing.  I'm not getting any codes but don't have a device that will check the BCM.  Any advice would be appreciated.

riverbanks Senior Enthusiast

riverbanks

Posted
Posted

 Check the ground at cab mount on frame,under driver's door,pull non-essential fuses,unplug modules,one at a time

  • 1 month later...
Rob Smetts New Member

Rob Smetts

Posted
Posted
On 2/13/2019 at 5:35 PM, carnau said:

Terrible Idea! Reconnect the wires properly and do a 30 minute relearn. Here is how. Also 90% of the time when this happens it is a passlock sensor located in the housing. Replace the housing and relearn the sensor and you won't have any more issues.

Here is the housing you need. https://amzn.to/2E9k4LB

If you want to bypass the passlock install this - https://amzn.to/2E9W6Qo

 

30 Minute Learn Procedure

Important: The vehicle learns the Passlock Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

1.) Turn ON the ignition, with the engine OFF.

2.) Attempt to start the engine, then release the key to ON; the vehicle will not start.

3.) Observe the SECURITY telltale; after approximately 10 minutes the telltale will turn OFF.

4.) Turn OFF the ignition, and wait 5 seconds.

5.) Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes; the vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.

6.) Start the engine. The vehicle has now learned the Passlock Sensor Data Code and/or password.

7.) With a scan tool, clear any DTCs, if needed. History DTCs will self clear after 100 ignition cycles.

 

 

I have an 02 Sierra 1500 sle 4.8l. I've tried just about everything. Researched this issue numerous times though it seems to happen during season change. I've replaced key cylinder, computer, alternator, starter, battery, checked wires, fuel system, fuses/relays. I bought a code reader and have done the relearn process with the new computer. Replaced the wires at the lock cylinder as well. The only thing I haven't done is replace the cylinder housing you've  mentioned, you seem to know what your talking about. I will try this and let you know. Granted my truck has 367,000+ miles on it and I probably could use an upgrade. I hope this works!

  • 3 months later...
Morgan72 New Member

Morgan72

Posted
Posted

Hello I have a 99 Chevy Silverado1500 the battery was dead n I went n got a new battery installed the new battery n then it started right up ran it for 30 minutes shut off n started back up went in house n came out the next morning n it won't start no crank nothing when I bought the truck the old owner said u have to push in the button on the wiper switch n then put key in to start it I have done all this but nothing now pls help

  • 9 months later...
Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

I installed an aftermarket remote start on an '03 Burban. The passlock security would not allow it to work properly, due to the ignition security.

 

I bypassed the ignition security, by connecting the wires together using a resistor - then I did the relearn.

 

Worked great. No more security issues.

 

I also installed a hidden kill switch, which is even more effective than the passlock security.

  • 8 months later...
silvercrow New Member

silvercrow

Posted
Posted

Here's the steps without modification... should only take 10 seconds.

1. Get in your vehicle, but leave your door open. Put your key in the ignition and leave it inserted, do NOT turn your key to any position yet. You will hear the rapid dings, let it go for about 3-4 seconds.

2. Turn your key to the ON position only, do NOT start the engine yet. Wait until you hear the dinging sound change to slow dings, you will see the lights on your dash go out and the dinging sound will stop.

3. Now turn your key to the START position and start your engine.

Hope this helps someone. 🙂

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Atlas
      AFM Experience

      By Atlas · Posted

      When I had a Bumper subscription for a few days when I needed to run title histories on cars I was looking at, I decided to look up a few of my old/past vehicles.   My 2015 Silverado was still actively registered and it last sold in 2024 with 160k on the clock. No idea if that's on the original engine but someone's keeping it on the road or the original AFM stuff is still going.   It used 0w20. I remember feeding it Mobil 0w20 AFE for the first 30k of its life on <5k OCI's.
    • Chuck FB
      Bridgestone vs Goodyear tires?

      By Chuck FB · Posted

      I can't say I have ever heard of someone getting that type of mileage out of a set of tires even though they rotated on a regular basis but without a doubt if the front end gets wear and those tires are no longer able to track straight it scrubs them off, and driving style and road surface make a huge difference as well.    However that is not what prompted me to comment as it was the new tire theme of sitting in storage waiting to be used scenario. I am sure some tires can last for quite a while in storage if its not too warm and out of the sunlight but unfortunately some tires the way they their rubber compound is formulated they can age and dry out even in a reasonably decent storage location. My brother ran into this maybe three years ago when he was looking at the tires that were on his dually truck and a combination of wear on the rear ones and noticing that the front tires had some cracks around the sidewall of the tire not far from the bead but he had replaced only the front ones not long ago with 2 of the remaining 6 he had left from the initial two sets of takeoffs he had all bought at the same time .... 10 years ago ! ( the years fly by, a truck that only gets used a bit to haul a camper during the summer and sits in a shed for a large part of the year ). That second set of 6 tires, two he had put on the front prior like I said and they had very little wear but those cracks were now present. So we go into the shed where the other 4 tires had been stored all this time and every one of them had the same cracks in the sidewalls and so in the end it amounted to throwing away 6 brand new but 10 year old takeoff tires into the dump that he got a deal on at a tire shop because they aged out. They were a Ford factory equipment BFG tire and those tires did not age well compared to some tires I've seen far older then that and did not show that type of aging. True, they always say up here anyway that 7 years is sort of a limit for age by rights, we don't have the intense prolonged heat that many of you have down in the states that just cook tires and depends on where the vehicle sits when not in use. GB, another words maybe had you bought a set of tires to store it would have been fine as long as you used them up fast enough but there are no guarantees when it comes to rubber, tires or of that other type stored in some guys wallets 😆
    • Head South
      Open Door Chimes When Key is Out

      By Head South · Posted

      2020 2500 HD...I had some trouble getting the key into the ignition switch but went in fine after applying some extra effort. Since then, the door chimes when open when the key is out of the ignition. Also, when I lock the doors with the switch on the arm rest, the driver door locks but then unlocks. (I can lock everything fine with the fob) The message on the little screen displays the "Engine Hours"...kinda weird.   I'm guessing something happened to the ignition switch and it thinks the key is still in there. I unplugged the batteries for 20 minutes, no change. There are a number of videos on YouTube but nothing I can find that address this specific issue. Ideas appreciated, thank you.
    • newdude
      Seems to be Missing a lot of Updates

      By newdude · Posted

      Based on what I can tell, yes.   As for updating it, its a mixed bag.  Updates do fix a lot of issues, but occasionally can create some oddities.  They do more good than harm though overall.     Here's what the most current one does and a  V171 Improvements Important: Improvements will vary by model, build configuration, system, and sales region. Not all vehicles have all features. OnStar and Wi-Fi may not work after remote start CarPlay may not automatically reconnect Part of the Driver Attention messaging screen may be in English even though the language is set to something else XM may not work After a dead 12V the radio may set to Arabic at each startup Bluetooth contacts might not be able to sync with the vehicle During an OTA the 12V battery may drain Customer might see a screen telling them to return to the dealer After changing the Wi-Fi SSID or password a device may not disconnect If a device is connected on the 2.4Ghz band, nothing will connect to the 5Ghz one, which could show as slow Wi-Fi speeds Customers might have noticed Wi-Fi dropping in certain areas and reconnecting later Customer might see the top of the screen blinking during Android Auto Android Auto may not connect CarPlay audio might momentarily cut out The "Add Phone" button may be grayed out The radio may not start up   V167 Most Notable Improvements:   Outside Air Temperature is incorrect. -You may see a popup message for Engine Shift. (Corvette Only) After changing the exhaust sound they get a popup that "mode change not applied", even though it was. -When changing volume, the volume bar is for Traffic instead of Audio. -(Corvette Only) Improvements to the placement of buttons and text. -If the customer receives the message "Apple CarPlay Could not connect", the cursor might move in the opposite direction than expected when using the control knob. -Android Auto automatically starts playing their music, even though they have turned that off in settings. -Intermittently they have a red OnStar LED with no OnStar function and/or no audio. -The minimum length of the Wi-Fi password was increased to 12 characters. -The popup message "Driver Attention Check, check your mirrors or Super Cruise will shut down" may not have come up on the display when it should have. -Startup animation added for 20th anniversary of the V-Series on Cadillacs. -The Navigation app received location improvements when going under long underpasses. -In the Navigation app there are filters for charging points that the vehicle cannot use.   V164 Most Notable Improvements Most notable improvements contained in this release may include: Apps Intermittently, an “SD Card Removed” message will pop up in the Navigation app. While in the audio app, the radio may stop working. Trailer Tire Pressure sensors may not be learned in the Trailer app. Not being able to return to the home screen while in the Camera app. After an ignition cycle, the radio might go to a black screen or stop working if using Sirius XM. Spotify icon truncated on Audio app.   SXM When changing power modes with the ignition switch, the HVAC pop up might appear. During startup, the radio will show the brand splash screen then go blank. Receiving a confirmation pop-up when changing drive modes. A “Return to Dealer” message may appear on the radio screen. SuperCruise setting toggle may not work. System After an ignition cycle, the radio might go black or stop working if using Sirius XM (SXM). Settings When performing a factory reset, the radio may stop working. After performing a factory reset, the radio may stop working when trying to switch users. When trying to go into the Language section quickly after startup, the radio may stop working. Projection Wireless CarPlay cannot be connected after unpairing another wireless Android Auto device. When the Android Auto screen comes up to connect wirelessly, the screen may freeze if the Cancel button is pressed. Removed the Apple CarPlay Cannot Connect screen when a device fails to pair during the autoconnect process. CarPlay information may not show up in the audio app. Near Field Communications (NFC) chime may be heard when NFC does not work. The Cannot Connect screen does not pop up after the first connection on wireless CarPlay fails. Apple CarPlay is now functional in Guam. Over the Air (OTA) When a software update is cancelled, the downloading logo may still be displayed. Energy When using the Energy app, the radio may stop working. When plugging in the vehicle, the display might show “Now” instead of “Charging Upon Plug In.” Instrument Cluster Voice recognition can be started while on an OnStar or phone call. When downloading contacts, there is a progress bar and circles on the Recents page of the cluster. The temperature on the cluster and the display may be different. After receiving and ending a call on the secondary paired phone, the cluster may get stuck on the phone menu. Bluetooth Intermittent Bluetooth connection loss.
    • AndrewF
      Front End Rattle

      By AndrewF · Posted

      Looking for help troubleshooting a metallic like front end rattle. Figured I’d see if anyone had thoughts before I schedule an appointment with the dealer.   The rattle is fairly loud and occurs primarily when the front driver side wheel hits a bump, even fairly minor road seams. Sometimes does it when the passenger hits a bump but I don’t believe when the rear hits. Rattle still occurs when foot is pressing brake peddle so I think that rules out the caliper rattle I’ve read about. I’ve also checked the running boards and they are tight.   Most noticeable at slow speeds.    Any insight is appreciated. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...