No Spark??

[randyauto1]

I have a 1999 yukon 5.7l gas
will not start?
no spark
will not link with code scanners tryed 2 of them
new crank sen,ing mog,fuel pump help please

 

[99Yuk]

I have a 1999 yukon 5.7l gas
will not start?
no spark
will not link with code scanners tryed 2 of them
new crank sen,ing mog,fuel pump help please

Possibly a distributor gear ring? Happened to me once.

Take the dis cap off.
Have someone crank the motor.
Watch the dis rotor.
Does it turn?

 

[961500]

My bet is to try the crank sensor wire pigtail mine shorted at the connector.