Just do a search in the Database on 12V Pump Timing...That might help~
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THEORY
01 2500 Laramie SLT - 4x4 Auto, V5, LT285's, S&B Stage 2,7" Pro-Comp Lights, 5" Black Bulllhauler,Silencer ring MIA,Boost/Fuel/Oil Gauges,195K and counting