How do I find the cause of a "no spark" problem?

Tiny
CJF
  • MEMBER
  • 2000 GMC SIERRA
  • 74,000 MILES
Truck cranks but no spark. Igniter/ingition module has been replaced. So has crank angle sensor, Dist. Cap and rotor and coil checked out good. Computer is not giving any codes or responding what so ever to an Obd II code checker. Could it be the distributor or possibly the ECM? Feelin kinda stumped right now. Thanks a lot, CJF
Saturday, October 29th, 2011 AT 10:11 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Tuesday, November 1st, 2011 AT 9:52 AM

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