Question about 2002 GMC Yukon XL
Most sensors will trigger the check engine light, however the TPS(throttle position sensor) or EGR Valve(exhuast gas recirculation valve) could be potential causes. Does this problem only occur at idle? Is the idle normal in park? Let me know and I can try to assit further.
Hope this helps
Posted on Jun 27, 2008
Yes it only happens when it's cold and in park
Posted on Nov 21, 2013
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Posted on Jan 02, 2017
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