anyone else have this issue? It only happens on a cold start. Usually in the morning or after a work shift. starts up fine but wants to die and shakes / slows right after started. IT stops when i give it some gas and start driving...i took it to a GM dealership and they had my car for 2-1/2 weeks before they told me they couldn't figure it out. No codes/lights on...

 

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The New Member Area is for introductions. Questions can/should be posted in the model specific sections. Example Hummer H3