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Author Topic: chevy won't start  (Read 6425 times)

Offline follow maggie

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chevy won't start
« on: October 01, 2019, 07:34:25 PM »
Any gm people on here familiar with that stupid passlock theft system? I put a new battery in my 2004 2500hd today and now it doesn't start. I called the dealer and did the procedure they told me- try to start it, leave the key on 10 minutes, turn it off 10 seconds, try to start it ... 3-5 times. I did this whole sequence twice this afternoon and evening, disconnecting the battery for an hour in between, and it doesn't work. Anybody have any ideas? I'd sure appreciate some input. I've been out of work a long time because of health so I can't afford to take it to the shop, especially since it'd have to be on a tow truck.

Offline jackelope

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chevy won't start
« Reply #1 on: October 01, 2019, 07:42:41 PM »
Just replacing the battery shouldn’t mess with the security.

What happens when you turn the key?
:fire.:

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Offline jackelope

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Re: chevy won't start
« Reply #2 on: October 01, 2019, 07:43:14 PM »
:fire.:

" In today's instant gratification society, more and more pressure revolves around success and the measurement of one's prowess as a hunter by inches on a score chart or field photos produced on social media. Don't fall into the trap. Hunting is-and always will be- about the hunt, the adventure, the views, and time spent with close friends and family. " Ryan Hatfield

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Offline Caseyd

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Re: chevy won't start
« Reply #3 on: October 01, 2019, 07:50:55 PM »
Is the truck starting then immediately shuts off?

Offline Buzz2401

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Re: chevy won't start
« Reply #4 on: October 01, 2019, 07:54:07 PM »
  I've got a 04 2500HD and have replaced battery a couple times with no issues at all. Let us know what you find out.
« Last Edit: October 02, 2019, 06:44:56 AM by Buzz2401 »

Offline Crunchy

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Re: chevy won't start
« Reply #5 on: October 01, 2019, 07:54:30 PM »
The battery in the remote good?  maybe use the key to lock and unlock the driver's door?  Youtube should have something.

Offline follow maggie

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Re: chevy won't start
« Reply #6 on: October 01, 2019, 08:49:12 PM »
It'll start & run for about 2 seconds and shut off. The lights work but nothing else. No gauges, radio, can't even put the windows up. The information center in the display says unknown driver- it normally says driver 1. The padlock theft light comes on when it cranks & starts up but goes out right away. It's a brand new battery that reads 12.5v. I've had trouble with this before but not to this extent.

Offline Ridgeratt

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Re: chevy won't start
« Reply #7 on: October 01, 2019, 08:53:16 PM »
How to Reset the Passlock System on GM Cars
by Herman Cruz


A wide variety of GM cars come with a passlock theft system feature that is meant to keep GM cars from being stolen. However, it isn't uncommon for GM car owners to experience glitches with their passlock system when trying to start their vehicle. When this occurs, you will see the security (Theft Sys) light being displayed randomly, plus you won't be able to start your vehicle. To cope with this pesky glitch you can reset the passlock system when starting your car.


Step 1
Insert your key in the starter, start you car as you usually would and let it stall. Keep the key in the "On" position. In other words, don't turn the key back to the "Off" position. You will know the key is in the "On" position because you can use the A/C, radio and see all the lights on the dashboard when it is in the "On" position.
Step 2
Wait until the "Theft Sys" light on your dashboard stays on without blinking. This will take approximately 10 to 15 minutes.

Start the car immediately once the "Theft Sys" light stays on steadily. Remember to not turn the key off. Your car will now reset the passlock system and start as usual.
Tips
If your passlock system keeps giving your problems, it may be broken and you will need to take it to the dealership.

« Last Edit: October 02, 2019, 07:16:46 AM by Ridgeratt »

Offline Happy Gilmore

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Re: chevy won't start
« Reply #8 on: October 01, 2019, 09:40:12 PM »
Had it happen on an old fleet Chevy. If I recall it was a corroded ground cable and bad battery.
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Offline Skyvalhunter

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Re: chevy won't start
« Reply #9 on: October 02, 2019, 05:38:50 AM »
Buy a Ford
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Offline C-Money

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Re: chevy won't start
« Reply #10 on: October 02, 2019, 06:13:37 AM »
Hope you get it figured out, sounds very frustrating!
I felt like a one legged cat trying to bury a terd on a frozen pond!

Offline Woodchuck

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Re: chevy won't start
« Reply #11 on: October 02, 2019, 06:17:12 AM »
Gasser or diesel?
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Offline Henrydog

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Re: chevy won't start
« Reply #12 on: October 02, 2019, 06:19:11 AM »
I have a Buick that did this crap to me.  My Kid is in a Auto Tech school and fixed it in about 10 minutes.

Using the key lock the door.  Then with the key unlock it.  Open the door and shut the door.  Lock the down from the inside with the power locks.  Wait about 30 seconds.  Then unlock the door again.  Start the car.  After you do that, turn the radio on or of, roll the window down an up (normal stuff)

You should be good after that.  There was a pattern too it.  It took him 3 or 4 attempts.  He googled the actual order.  He said you have to make it think it is not being stolen, and one of my issues was my trunk was open.  ( I was checking the fuel pump)  The car shut down because it thought it was being stolen

Offline follow maggie

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Re: chevy won't start
« Reply #13 on: October 02, 2019, 06:38:20 AM »

Offline follow maggie

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Re: chevy won't start
« Reply #14 on: October 02, 2019, 06:40:12 AM »
Buy a Ford
:chuckle: My last pick up was an f-150 & that thing lived at the shop getting expensive repairs. Looking like the next one will be a dodge

 


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