An aquaintance has been to the dealer, numerous visits/hundreds of bucks
spent with no fix for a miss fire (missing under load).
Most recent scan showed a 5000+ count miss fire at #6 plug, with lessor
numbers at #'s 1 2 3 and 5 4 being the only clean firing of the bunch.
I'm suspecting an ignition module or coil, but am not familiar with vortec
Is the distributor mechanically driven from the cam, or is it strictly
triggered from the ecu?
1)Will a failing ignition module (so far not touched) set this code?
2)Will a failing injector pack set this code?
Thanks in advance