2000 Chevrolet Tahoe Starts Then Stalls

CHEVROLET TAHOE
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BADGOLF444
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Hello all I have been stressing over this problem with my truck Tahoe 2000 62k miles 5.7. it decides when it wants to start. Over the last year and half or so, my truck after sitting a day or so on occasion fails to start. It turns over starts then immediately within a second or so cuts off, I try again and same thing happens time after time but will not stay on. I will let sit for a day or so turn the key and it starts no problem. Funny thing I told my wife, for a while it would only do it on Sundays when we were ready for church ("it's got the devil in it I say"). I have taken it to the dealer before as it is there now but they claim they cannot find anything wrong with it, they tell me it would have to be doing it for them to fix. When it is not starting I have tried the resetting of pass lock, disconnecting battery no response, it has never thank god left me stranded anywhere after starting not sure if is due to it being warm. Pleeeeeze help!
Apr 4, 2007 at 11:21 AM
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SERVICE WRITER
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I need clarification. I don't believe in the "Devil".

When it doesn't start:
It has set for longer than normal.....

You turn the key, it cranks over a few times, starts and stalls.......
You then try to start it again by turning the key, the engine turns over, but it doesn't start......
Apr 4, 2007 at 12:48 PM
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BADGOLF444
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After driving it fifty miles truck may sit overnihgt and not start the next morning.
When it is not starting after every attempt it cranks fine starts and stalls within a second or so. At times on mornings it would not start and later in the afternoon it would start up fine. On other occasions I would try to start two three days in row without it starting once. It got so bad I parked it and use it very seldom starting it only to attempt to keep my battery healthy. I had a person interested in buying it one day but I could not get it started for him to test drive. I have it at the dealer now they can not find anything wrong with it. I asked them to keep it for a few days hoping they experiance the no start. I have thought of vediotaping the occurance the next time so they can see it on tape.
Apr 5, 2007 at 10:44 AM
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SERVICE WRITER
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Intermittants can be a real pain. What we have done in the past is when a customer has this, they let one of us use it a a personal vehicle in hopes of the problem happening while we have. It is tough to run a vehicle during the day, and hope it happens.

If they can't solve it, post when you get it back and maybe we can try a few things when it happens and you have it.
Apr 5, 2007 at 1:43 PM
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Only because I did some research on this, I am posting what I found. I have it "narrowed" down to several likely culprits. I do say narrowed down in a sarcastic sense.


-vats (vehecle anti-theft system) problem that may include: Key switch and cylinder lock passlock.

-faulty connector at fuel pump and or ground.

-faulty fuel pump replace with # 25314329

-fuel metering valve (part of fuel injection spyder)

-Terminals ant fuel pump relay being sread too far apart in relay box. Replace relay as well.


These are all "fixes" the fit the description of your symptoms.

Hope you finger it out.
Apr 6, 2007 at 12:08 PM
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BADGOLF444
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Thanks for the info will work on them with hopes of eliminating them one at a time. The passlock security I believe is the cotliest of them all, I thought about bypassing this with an alarm system with remote start bring price down 200-300$. I will start with cheapest and work my way up. How about the fuel regulator or filter could these be at fault?


Thanks again for your time and help.
Apr 7, 2007 at 3:36 AM
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[quote:16377166e3="badgolf444"] How about the fuel regulator or filter could these be at fault?

.[/quote:16377166e3]

I don't see how either would cause an Intermittant no start.

Keep the for sale sign on it if you really intend to sell it. (be honest about it of course). You never know who would be wiling to take on the truck regardless. In the meantime, one may be interested when it does get solved.
Apr 7, 2007 at 4:57 AM
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MARKDFL
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[were you able to fix your problem? I have the same iissue w/ a '96 Tahoe 8 Cylinder. It can go months without any problems, then one morning, it will turn over but not start, like it's not getting gas. Then that afternoon it fires right up. It always seems to happen in the mornings. I've been running mid to high grade gas but that doesn't seem to help much.I have also taken it to the Chevy dealer and a local mechanic (had it towed there and when it arrived, of course, it started right up)
If you fixed the problem, what fixed it?
Jul 26, 2007 at 12:33 PM
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I take back what I said about the pressure regulator, it can have an intermittant no start problem. This is usually accompanied by a heavy fuel odor from leaking.
Jul 26, 2007 at 10:27 PM

Suggested Repair

No confirmed fix was reported. When the stall happens, check the passlock/VATS system including the key and lock cylinder, the fuel-pump connector and ground, the fuel pump, the fuel-pump relay and its terminals, and the fuel-metering valve on the injection spider. A leaking fuel-pressure regulator can also cause an intermittent no-start, usually with a strong fuel odor; a fuel filter is unlikely.

Conversation Summary

A 2000 Chevrolet Tahoe with a 5.7 engine intermittently cranks, starts, and stalls within about a second after sitting, then may start normally later. The dealer could not reproduce it. An expert listed possible causes including passlock/VATS, a fuel-pump connector or ground, the fuel pump, the fuel-metering valve, and spread fuel-pump relay terminals, and later added a leaking fuel-pressure regulator if a strong fuel odor is present. The fuel filter was considered unlikely, and the problem was not reported as resolved.

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