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I am passlocked. I've done some research but have not found a solution yet. Is anyone else having a passlock issue. My truck, (2005, 2wd, I5, auto) was in storage and the battery went dead. I replaced the battery but passlock is locked. It started once after the new battery but it shut off. I tried doing a re-learn twice but no luck. Called the best dealer in SoCal and they told me to pound sand? Any suggestions other than throwing parts at it?:tdown:
 

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Mine acted up again Tuesday last week but just the opposite........motor won't start vs turns off. Dash light blinks and after 10 minutes, it starts fine. Never know when it will "no start" again. Dealer will "fix it" for a grand.....thanks GM.
 

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I'm still concerned that something turned a running engine off--is that what happened? I do not see how that's a Passlock issue...?


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Yeah.......the engine "turning off" is basically why GM will paying billions in settlements.
 

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Exactly. If the passlock system thinks you are stealing the vehicle it shuts the fuel off. If it does not get the signal, that's what happens.

Passlock is designed to turn off the fuel when you are attempting to start the vehicle, not when it's already running.

How long was it running before it 'turned off' on its own?

I am no Passlock expert by any means but I have read the vast majority of Passlock threads when I had my episode a year or two ago, and I can't recall anyone saying Passlock turned their running vehicle off, it only prevented it from starting.

Perhaps I misinterpreted your post?

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If I'm not mistaken, when u turn the key to run (not start), u can hear the fuel pump "hum/run" momentarily. When the Passlock engages/acts up, there's nothing but dead silence from the fuel pump....'cause it ain't runnin'. 10 minutes later all is good, Passlock has reset and away u go.

Turning the vehicle off while it's running/being driven is a lawsuit just waiting to happen, as GM has found out.
 

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The way it shut the engine off after it started and the light is on.
With the key in the run position (engine not running) is the passlock light blinking or steady on? The ones I've seen with a true passlock problem had the light blinking and none had the said problem of the motor turning off after it had been started. Like others have said it prevents someone from starting the motor and stealing it. Does it start and do you have a code reader? They had a cell and a code also along with the blinking light.
 

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On mine, if the Passlock light is on steady (key in run position) it starts every time......if the light is blinking, not start......not for 10 minutes anyhow.
 

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Discussion Starter · #16 · (Edited)
Passlock is designed to turn off the fuel when you are attempting to start the vehicle, not when it's already running.

How long was it running before it 'turned off' on its own?

I am no Passlock expert by any means but I have read the vast majority of Passlock threads when I had my episode a year or two ago, and I can't recall anyone saying Passlock turned their running vehicle off, it only prevented it from starting.

Perhaps I misinterpreted your post?

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It only fired for a second and then shut off.

With the key in the run position (engine not running) is the passlock light blinking or steady on? The ones I've seen with a true passlock problem had the light blinking and none had the said problem of the motor turning off after it had been started. Like others have said it prevents someone from starting the motor and stealing it. Does it start and do you have a code reader? They had a cell and a code also along with the blinking light.
It was blinking and then when the fuel was shut off the light was solid on, then flashed when you turned the key.

If I'm not mistaken, when u turn the key to run (not start), u can hear the fuel pump "hum/run" momentarily. When the Passlock engages/acts up, there's nothing but dead silence from the fuel pump....'cause it ain't runnin'. 10 minutes later all is good, Passlock has reset and away u go.

Turning the vehicle off while it's running/being driven is a lawsuit just waiting to happen, as GM has found out.
Yes. That's why they have a problem.:salute:

James has already reprogrammed my computer and put a tune on it. As soon as it arrives I can do some repairs and get it back on the road. I have new unit bearings for the front, some new to me tires and I am going to swap in my new Currie Ent. Fab 9 rear housing. http://www.currieenterprises.com/cestore/productsRE.aspx?id=3549
 

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I just got a 06 canyon with a 2.8 4 cylinder and I am going through same problem. When I turn the key to acc. I see the security light of a car with a lock on steady. When I turn the key to start the engine, it turns on within a second it shuts off. When it turns on I see the security light starts blinking that’s when the engine turns off. I think It shuts Down from lack of gas. I took apart the ignition for any key reader and found none. (I didn’t have the original key so I used a old Jeep key and made it to work). Because I found no chip reader I decided to make my own key. I try pouring gas inside the throttle body and engine stays on. That confirms me that something turns off the fuel when engine starts. I don’t know if it was a good idea but I took out the fuel pump relay and jump it to keep the fuel pump running the whole time and when I turn it on, there was this ball of fuel and fire bursting out the throttle body. The engine was on flame..I managed to turn it off. So I didn’t try it no more.
 
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