I change out motors and wiring harness from 4.3 to 5.7 I'm getting power to the coil and ignition module but not out of the coil
You need the PCM also. (computer)
Yeah I changed it with the wiring harness
If you have power to the coil, but no spark yet, I would take the coil & the ignition control module off and have it tested at Auto Zone.
There also brand new
Also changed pickup coil in the distributor and crank position sencer checked all grounds
Everything is working should have spark. Try checking with a spark plug laying on the manifold? Is there spark out of the coil wire itself?
What year is the engine?
No spark out of the coil its a 96 vortec
Is the coil grounding points good and clean?
Yeah I even added an extra ground cable to the coil when I put it in
Well I guess you are going to have to get some things check out. Power to the coil, right, power to the ICM, power goes from that to the coil, so there is power. Before having to test the ICM, coil, and the ECM, maybe check to see if there is power at the coil when cranking/starting position. Maybe has something to do with that circuit. And the distributor...the distributor, is that in wright?
Looking for a Used Sierra 1500 in your area?
CarGurus has 56,299 nationwide Sierra 1500 listings starting at $2,499.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts