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Re: 93 with 3.1 stumbling
The flashing light you are seeing is signifying a misfire (although a code would help distinguish from where). So either you are missing spark, compression or fuel. With the age of these APV's I would first look to the fuel pressure. You can check it when it is not doing it and see if the pressure is low. Also have the gauge with so you can check it when it happens. If that checks out then I would move to spark.
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2011 Chevy Malibu
2012 Dodge Ram Crew Cab (Camper Puller)
2003 Trailblazer LS 4X4
1990 GMC Full Size Jimmy 4X4 RIP 
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