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Old 03-06-2019, 09:19 AM   #2 (permalink)
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Join Date: Mar 2019
Location: Indianapolis
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RampRat31 is on a distinguished road

Did you check your throttle body assembly for contaminants as well as your intake filter? Sometimes, when one or the other gets dirty/clogged, it will fool the ECM into dumping more fuel into the engine. Another thing is the blasted fuel cap issue that GM is notorious for.
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