00 1500 starts but wont stay running

dereki74
Posts: 1
Joined: Thu Jan 24, 2013 11:41 am

00 1500 starts but wont stay running

Unread post by dereki74 » Thu Jan 24, 2013 11:46 am

truck sat for over a month without starting, has been very cold! we changed the starter and battery added gas and stabilizer, vehicle now starts but only for a sec or 2, push the gas it makes a vac sound and shuts down. very unclear why it doesnt start! is it just cold? also tried starting fluid had no effect still kept shutting down??? Please help??

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ProTech
Posts: 651
Joined: Wed Oct 17, 2012 10:08 am

Re: 00 1500 starts but wont stay running

Unread post by ProTech » Thu Jan 24, 2013 8:46 pm

Could be a security issue. Is the security light illuminated in the dash? If so, that will cause the truck to start and die out after a couple of seconds. Usually a faulty Passlock sensor is the problem there.

If it's not a security problem, I'd first recommend a fuel pressure check just to make sure that's ok. Check for spark and that the ignition system is functioning correctly. Maybe try scanning it and see if any codes are present, that will always help aid in diagnosis. If it's not a fuel problem, or spark issue, and you're sure the truck has compression, then you'd be looking at a possible computer problem, wiring issue, or other sensor that has failed.
GM Dealer Technician For 18+ Years
In the automotive industry for 20+

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