03 Chevy Venture cranks but no start

[incognito22]

It does not blow when I turn the key on, only when I crank the vehicle.

[Tech II]

Does it blow immediately when you crank the vehicle?

If so, I would I would remove the crank sensor harness, and crank it to see if the fuse blows......then do the 4 wire harness and crank again......if it still blows, and this is a new ICM that has the same problem as the old one, then it's possible it's one of the coils shorting out.....

[incognito22]

Yes it blows immediately when I crank it. Thanks for the advice I will try it and let you know what happens.

[incognito22]

It was one of the coils. A big thanks for all of the help.

[Tech II]

Should tell the GM shop....would like to see the look on their face....

[incognito22]

I got $150 of my money back yesterday. Called to tell them what the problem was today but had to leave a message. It was funny though, the more they talked the more they contradicted themselves.

[yaddo03]

I'm having the same problem on my 03 chevy venture van, but it's not blowing fuses it will crank but won't start! It will start maybe once every 25 or 30 times I turn the key,and I already replaced the ignition sensor, if I replace the ICM, will this solve my problem????

[Tech II]

You have to do the basics:

Check for spark on several cylinders...

Check for fuel pressure......

See if car starts/almost starts by spraying carb cleaner into intake while someone cranks the engine....

Check for codes....

Have no idea what an ignition sensor is.....