1999 Bonneville SLE Intermittent Starting
Retired Senior Admin
Expert Gearhead
Joined: May 2006
Posts: 29,661
Likes: 43
From: Sheboygan Wisconsin
No start no spark tends to be the crank sensor.
Here is a test for the ICM. https://www.gmforum.com/trouble-shooting-test-procedures-141/icm-test-299761/
You can also take a look at this. https://www.gmforum.com/trouble-shooting-test-procedures-141/engine-cranks-but-will-not-start-296982/
Here is a test for the ICM. https://www.gmforum.com/trouble-shooting-test-procedures-141/icm-test-299761/
You can also take a look at this. https://www.gmforum.com/trouble-shooting-test-procedures-141/engine-cranks-but-will-not-start-296982/
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