2004 gmc 1500 wont start
No spark sometimes . Crank
sensor on my truck . Check ur
ground cable on frame could go
bad or check rotor cap for slight
crack . Or security switch in .
colum.and clean ur battery
cable . If truck runs sometimes
and sometimes not .
you'll have to test the problem when it happens , is there an ignition relay ? start at the plugs and work your way back , ignition module , scan for codes even if the light ain't on
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