SOURCE: 2000 GMC Sierra 4.3L no spark at the plugs...HELP!
no codes. most direct components changed.
computer. take it out or have the truck towed to the shop/dealer to test the computer.
SOURCE: 1996 Yukon misfire when driving at steady speed
either your fuel filter by be plugged, could be injector shorting out could be throttle position sensor
SOURCE: 92 chevy truck 5.7 idle revs up and down high emissions
sounds like a vacuum leak check hoses and manifold
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