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07-05-2003, 12:33 AM
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#1 | |
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AF Newbie
Join Date: Jul 2003
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rough / hunting idle
I have a 2002 denali with 18,000 miles. When starting hot the idle "hunts" between 400 to 600 rpm until I goose the throttle then it clears up. any ideas?
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07-05-2003, 08:01 PM
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#2 | |
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AF Newbie
Join Date: Mar 2002
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I guess it would be normal for a vehicle of such size at low RPMs
otherwise check your throttle body |
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07-08-2003, 06:35 AM
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#3 | |
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I know stuff
 
Join Date: Jul 2003
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Some of the 01 and 02 trucks have a low idle complaint. Since your truck is still under warranty, take it to your dealer.
I don't have the bulletin number handy, but there is a bulletin and/or a calibration upgrade for some models. Sometimes, cleaning the throttle bore will fix this complaint. (should be done at no cost to you as it is a warranty concern)
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07-11-2003, 09:08 PM
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#4 | |
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AF Newbie
Join Date: Jul 2003
Location: Normal, Illinois
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MY 99 GMC had the same problem. It was the fuel pressure sensor. Not a hard fix. But since your truck is still under warrenty go back to the dealer. you might want to check out the following web site.
http://agmlemon.freeservers.com/ Its a GMC lemon site and what to do if you want GM to buy back your GM
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