cranks but no run (has no fire)


Asked by Sep 16, 2014 at 10:04 PM about the 1996 GMC Sierra 1500 C1500 SL Standard Cab Stepside SB

Question type: Maintenance & Repair

have replaced with new  dist,cap, rotor, wires ,plugs,cam sensor , crank sensor, and
swamped with known to be good map sensor ,coil and ign driver, and ecm, have checked
connectivity all was good grounds that i can find appear to be good, now just scratching
my head?

10 Answers


Is there a anti theft system on the vehicle?

1 of 1 people found this helpful.

use to be a aftermarket one, was running after it was taken off,


Well I'm scratching my head now to.

1 of 1 people found this helpful.

Disconnect or removed? Because since you have done everything else, it seems like the last possibility.


Pull the distributor out and see if there's a gear on the bottom. They break off.


has new dist.old dist was worn to razor edge


Last time I had this problem ground to the bed of truck was left disconnected.Double check all grounds wiggle wires while trying to crank.

Best Answer Mark helpful

relocated ground on rear of intake, to back side of the head, wala have spark well almost intermittent spark , but enough to help through a code p0339 , but that was a new crank sensor , replaced the new sensor with another new sensor, fired right up, learned can't trust new parts all the time

2 of 2 people found this helpful.

Glad to hear it.


I am having the exact same problem at the moment.Replaced Coil and Ignition control module ,went ahead and put new plugs and wires while i was at it.Still no fire.Its not in the distributor because theres no fire being supplied from the coil.(My truck is a V6 4.3L)So it only has one primary cell.Gonna try the crank position sensor this evening.Wish me luck!

4 of 4 people found this helpful.

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