truck wont hold idle - The 1947 - Present Chevrolet & GMC Truck Message Board Network

melks · 03-01-2012, 01:21 PM

hey guys i was wondering if anyone knows some sort of reset code for these trucks...I've owned my 99 swb silverado (4.8L-manual windows and locks) for a couple years now and it seems every couple months i cant get the truck to hold idle upon starting it... the truck starts up but then immediately shuts off. Usually a couple hours later shes good to go and fires right up...I've had some people tell me its the neutral safety switch so i have to put the truck down into neutral before starting it up...doesn't work...I've also had people tell me it has to do with the Anti Theft system. Has anyone come across this problem?
Thanks in advance

**Boog** · 03-01-2012, 01:54 PM

Can you make it run by holding slight pressure on the accel pedal? If so it sounds like the idle air control is carbon'd up and may need replacing. It won't necessarily set dtc. You can remove it and clean the port and tip then reinstall and see if that helps. About $50 iirc.

melks · 03-02-2012, 02:07 AM

no it will still not hold idle if i try to give it some gas to keep it going...the security light in the message center usually blinks when this is happening with my truck as well. I doubt its the idle air control just because the truck runs fine otherwise...

dadsworktruck · 03-04-2012, 10:41 AM

check out this out might help you , or at least give you something else to think about.. good luck
http://answers.yahoo.com/question/in...1220620AAZ3fj7

melks · 03-04-2012, 09:19 PM

thanks

03-01-2012, 01:21 PM	#1
melks Registered User Join Date: Mar 2010 Location: Ontario Canada Posts: 151	truck wont hold idle hey guys i was wondering if anyone knows some sort of reset code for these trucks...I've owned my 99 swb silverado (4.8L-manual windows and locks) for a couple years now and it seems every couple months i cant get the truck to hold idle upon starting it... the truck starts up but then immediately shuts off. Usually a couple hours later shes good to go and fires right up...I've had some people tell me its the neutral safety switch so i have to put the truck down into neutral before starting it up...doesn't work...I've also had people tell me it has to do with the Anti Theft system. Has anyone come across this problem? Thanks in advance __________________ 1984 Chevrolet C10

03-01-2012, 01:54 PM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,655	Re: truck wont hold idle Can you make it run by holding slight pressure on the accel pedal? If so it sounds like the idle air control is carbon'd up and may need replacing. It won't necessarily set dtc. You can remove it and clean the port and tip then reinstall and see if that helps. About $50 iirc. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

03-02-2012, 02:07 AM	#3
melks Registered User Join Date: Mar 2010 Location: Ontario Canada Posts: 151	Re: truck wont hold idle no it will still not hold idle if i try to give it some gas to keep it going...the security light in the message center usually blinks when this is happening with my truck as well. I doubt its the idle air control just because the truck runs fine otherwise... __________________ 1984 Chevrolet C10

03-04-2012, 10:41 AM	#4
dadsworktruck Registered User Join Date: Jul 2009 Location: blacksburg,s.c. Posts: 155	Re: truck wont hold idle check out this out might help you , or at least give you something else to think about.. good luck http://answers.yahoo.com/question/in...1220620AAZ3fj7

03-04-2012, 09:19 PM	#5
melks Registered User Join Date: Mar 2010 Location: Ontario Canada Posts: 151	Re: truck wont hold idle thanks __________________ 1984 Chevrolet C10



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