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#gmc #help #obsbuild 1500 1992 1995 1998 2003 2005 2006 350 4.8l 454 4l60e 4l80e 4wd 4x4 5.3 5.3l 5.3silverado 5.7 5.7 tbi 5.7 vortec 5.7vortec a/c alternator avalanche battery c10 c1500 catalytic converter chevrolet chevrolet silverado chevy chevy c/k chevy c/k1500 chevy c/k2500 chevy help crank no start differential duramax electrical electrical issue engine engine swap exhaust fuel fuel pump gmc gmc sierra gmt400 headlight headlights heater help interior k1500 lift lift kit lifted low oil pressure lq4 ls swap misfire need help noise obs chevy overheating p0300 quadrasteer radiator radio rough idle seats shocks sierra sierra 1500 silverado silverado 1500 silverado 2500 hd silverado1500 suburban suspension swap tahoe tbi tires trail boss transfer case transfer case shift motor transmission transmission issue truck vortec wheels wiring wiring isues yukon yukon xl z71
  1. Chevy Silverado Forum (GMC Sierra)
    New to the forum and at a loss. Starting with a 2000 Silverado 5.3 275k never had an issue till about 2 months ago..started witha couple hard starts..then subsequent engine light indicator. Put an obd on it and got a p0300 random misfire. Changed plugs and wires since they were probably due...
    hard starting misfire p0300 power loss rough idle
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