Question about 2004 Chevrolet Impala

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04 impala won't start sometimes-wait 10 minutes and it starts.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 98 Answers

SOURCE: Wait 15 minutes to start.

Impalas and some other Chevy products have a system called passlock or passlock II At times they will "sense" an intrusion even if there isn't one (even if you are using your keys). At that point the system locks down the fuel injectors and the car won't start even though everything else seems to work. You can do the same **** that you are talking about, turn the key in the ignition and leave in the ON position 10-15 minutes but who wants to do that all the time, and this always seems to happen at the worst time. If you take it to a dealer they are in most cases prohibited from making changes to factory installed protection systems....SO.....what I did on my Impala was...to disable that portion of it. This will take an hour or two. The dash is held in place with a variety of screws and bolts and you may want to do a web search to determine the placement of them. I just took my time and found mine until I had the dash removed. Under the steering column there is a metal plate that also needs to be removed, held in place with a few bolts. Once that is removed you will see coming up the steering column (3) wires grouped together. They may be tied together or taped together but there should be three. One is gray, one is yellow and I beleive the other is white. The yellow one is the only one you need to concern yourself with for this problem. Make sure that you have electrical tape or something to seal the ends off with (have it with you ahead of time, also wire cutting snips or something similar. This is VERY important. Once you have located this group of wires, START THE CAR, and snip the yellow wire while the car is running. Make sure and do not touch the ends to anything metal and try to seal them off with electrical tape as soon as possible. After that put everything back in place and you are good to go. The Security light will stay illuminated but it is not a problem. You can take the bulb out but it is very complicated and not worth the trouble. When I say security light it is the light to the right side of your control panel and it is either orange or yellow and says SECURITY> the alarm and everything else will function just fine. I did this to my Impala 10 months ago and have never had the not starting problem ever again. For more info on the grouping of wires going up the steering column you can go to a website called BulldogSecurity.com and they have more detailed info...Hope this helps you....!

Posted on Feb 14, 2009

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  • 4 Answers

SOURCE: 04 impala wont start sometimes

mine would do the same i had a 2002 3400 v6. if your service vechiel soon light is on that is why it is not starting. there is a electrical problem that is slowly making your on board computer go out and it is causing it not to start. and it only gets worse if you keep driving it like that. on mine the door lock fuse started blowing out, it would not always start sometimes, that radio started to say locked on it, all my lights on the dash board started coming on like ABS, SRS, AND THE BATTERY LIGHT. THAT IS A BAD ELECTRAL PROBLEM, AND IT SEEMS EVERYTHING IS ALRIGHT BECAUSE THAT SERVICE VECHIEL SOON LIGHT HAS BEEN ON AND YOU COULD NOT TELL IF ANYTHING WAS WRONG. BUT THERE IS AND I ADVISE YOU TO STOP DRIVING IT UNTIL YOU CAN GET IT FIXED OR YOU WILL HAVE TO PAY FOR ALL THE THINGS IT BLOWS OUT LIKE I DID. THE COMPUTER ALONE IS $250.00 AND THEY HAVE TO REPROGRAM IT AND REPLACE EVERY THING THAT THE ELECTRAL PROBLEM IS BLOWING OUT AS YOU ARE DRIVING. MY DAY TIME RUNNING LAMPS WHERE NOT EVEN COMING ON ANYMORE, THIS IS VERY SERIOUS AND THERE ARE A LOT OF PEOPLE COMPLANING ABOUT THIS CAR. IT STARTS FUNNY, THE ENGINE NOCKS THE FIRST 2 MIN. IT IS ON, AND NOT TO MENTION THE COOLANT GAGE GET A LITTLE TO CLOSE FOR CONFORT TO RUNNING HOT IF YOU KNOW WHAT I MEAN.

Posted on Jul 10, 2009

judd0081
  • 334 Answers

SOURCE: Sometimes it will not start

It's when the security light starts flashing that the infamous "chip" in the key becomes a nightmare to many. Gradually the car begins not cranking anymore or if it cranks it would start and die in a second. Randomly it will do this more and more often until it won't start anymore. VATS, PASSkey and Passlock immobilizer systems are killing cars all over North America, they have a short lifespan and are certainly more effective against owners than thieves. Here is how you save your car
1st trick, Try a spare key that is newer or used less. The pins wear down and so do the keys causing security fail. 2nd trick, (if not starting) turn the key forward 2 clicks till right before it would normally start, leave like that for 10 minutes. ( no less ) After 10 minutes, turn key back then forward and your car might start. I did this in my regal for more than a year. If its shutting down while running, im sorry i have no quick fix... If anything on this page helps you, please remember to comment or give me a thumbs up on the myfixya sight so i can have a better rating to help more people on this. Thanks

Cheap fix: Bypass the chip in your key. Temporary, but effective. Until the TDM (theft deterrent module) in the dash poops out, then you're kinda screwed. I was told that these types of key security systems have a 7-10 year life span. Sucks for us. This link explains the "Key Issue" pretty well.
----- http://vats.likeabigdog.com/


Never worry again fix: Bypass the whole VATS/Passlock/passkey I or passkey II system entirely. Literally take it out, and throw it away. I just did this in my Regal. Took about an hour. Took longer to find the thing than it did to fix the problem. They sell a unit for 200 bucks to totally bypass this system FOREVER. life time-money back and all that. Finally did this in my car. Well worth the 200 if you've looked into getting this replaced... Anywhere from 600-1000 bucks. If you do buy this, please purchase it thru this link. The cost is the same, but i get credit for the sale and im trying to earn my money back, as you will be able to do if you buy fron NewRockies and join the free affiliate program. Thanks
----- http://newrockies.ca?ap_id=judd0081 ----- With this fix, you can take that whole Vats, passlock, passkey system out of your car all together. Good info on both sites.

It works for:
Any GM or Isuzu Vehicle with VATS or PASSKey or PASSLock security systems.
If your car has the chip in the key or in the lock cylinder, then you can save it with this Full Bypass.
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Posted on Feb 18, 2011

tayjoejoe
  • 2185 Answers

SOURCE: My 2001 malibu sometimes won't start for

sometimes the cars anti theft can shut down the starter and/or the injectors. This might be your problem, especially after changing the ignition this problem is more common. The ignition is part of the antitheft security system. Check out this link for info and solutions. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Posted on May 27, 2011

Testimonial: "Yes, it sounds like this is very common in this make and model. Doesn't look like there's a good fix based on stuff on the web. Thanks for the help!"

  • 13 Answers

SOURCE: I have a 2006 chevy colorado. Randomly, maybe once

I have the same problem few days ago, and still didn't find any solution. Can any one please help?????5

Posted on Jul 28, 2011

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2 Answers

My 2005 chevy impala won't start since someone broke into my car


i would say when the person broke into your car they set off the security system which stops the car from starting, the way to reset the security is to put your key into the ignition turn the key until all the dash lights come on and let them stay on about 15 minutes after the 15 minutes have expired turn the key off and wait about 3 seconds and then your car should start. hope this helps.

Jan 29, 2013 | 2005 Chevrolet Impala

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2001 grand am security light on, car won't start


ignition lock cylinder is failing needs replaced

Nov 08, 2012 | 2001 Pontiac Grand Am

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04 impala cranks but won't start


You'll have to figure out if it is a fuel or ignition problem.
Is the check engine light on ? Have you checked for trouble codes ?
It could be a relay, the ignition module, coil, fuel pump, or a list of other things.
Could even be a problem with the security system.

Jul 06, 2012 | 2004 Chevrolet Impala

1 Answer

My car has all the juice but when turn it over it won't even try to start but lights and dash all light up it says security in the message box it was very rainy yesterday when the problem began


I have this same issue - I've researched it to death. I've been told it everything from the BCM (body control module aka computer) to a bad ignition switch to a loose ground. The cost to getting it fixed runs into the hundreds of dollars. Fortunately it comes and goes and is not a permanent fault on my Impala. The security indicator lights because the computer thinks the car is being stolen. I swapped keys and it does seem to help but it still crops up now and then. The easy solution is to turn the key to the off position and (this is very important) wait no less than 10 minutes. Turn the key and your vehicle should start. 10 minutes is the time it takes the system to reset. During that 10 minutes reset period don't open the doors or turn the key at all. Hope this works for you as it continues for me.

Feb 04, 2012 | 2002 Chevrolet Impala

1 Answer

1997 chevy malibu anti theft system how do I fix this problem The car won't start I believe the car is in the anti theft mode


The late-90's GM Passlock system (e.g. 1997 Malibu, Regal, Impala, etc.) has a part around the ignition tumbler that goes bad and no longer reliably detects the valid key. In that situation, the "Theft System" light will slowly flash and the carburetor is cut off so the engine won't start. The time-out on the system is 10 minutes - you don't have to do anything, you don't have to disconnect the battery, the key can be out of the ignition -- it's just a time delay. After 10 minutes, the light goes out and you can try again (but if the key is again not detected, the light will start flashing again and you have to wait another 10 minutes)
Someone else, who had this problem, told me to remove all other keys from my keyring. The weight of the other keys pulls on the ignition key causing the key to be unreadable. It has been 7 weeks since I have been doing this and have not had a problem

Sep 08, 2011 | 1997 Jeep Cherokee

1 Answer

2007 GMC Canyon won't start sometimes, I wait about 10 minutes and it starts. I think its the passlock system. How do I fix this problem?


Go to this sight for info and a permanent solution

http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 23, 2011 | 2007 GMC Canyon Crew

1 Answer

2002 impala intermitenly wont start


I would clean the battery connecters or possibly change them. How old is the battery? sometimes when battery get old, they have enough juice to crank the motor but not enough to start it..But then again, if it doesn't crank at all sometimes, it could certainly be a bad or loose battery terminals..Start with this since its the simplest and easiest and could very well be your problem. hope this helps

Sep 23, 2009 | 2002 Chevrolet Impala

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