i have a 2000 gmc seirra 5.3

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03-03-2008, 07:19 PM

romirom

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Join Date: Mar 2008

Posts: 2

i have a 2000 gmc seirra 5.3

My truck just started acting up you can crank it up and it will idle fine but if you drive it and stop and put it in park or neutral it idles up to about 1 and you can cut it off and on a few times and it will stop what is the problem

03-04-2008, 08:37 AM

jcbst12

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Join Date: Jul 2007

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Posts: 1,855

RE: i have a 2000 gmc seirra 5.3

Could be:

* AIC gone bad
* PCV clogged or stuck
* Vacuum leak
* EGR but I doubt it

03-04-2008, 07:10 PM

romirom

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Join Date: Mar 2008

Posts: 2

RE: i have a 2000 gmc seirra 5.3

some body told me that it was the throttle position sensor

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