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post #1 of 7 (permalink) Old 05-16-2017, 06:29 PM Thread Starter
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08 Cobalt No Crank No Start

Hey guys I have a 2008 cobalt and it just stopped working on me. It doesn't crank at all. Battery is good I really need help figuring it out. Checked all fuses under hood and on the bcm inside. All are good It also has service power steering and low fuel light. Which wasn't on before. Idk what else to check. Not getting crank signal out of the ecm. Checked grounds as well. Any help would be really appreciated
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post #2 of 7 (permalink) Old 05-17-2017, 07:14 AM
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Did you check Boost post (red cap) under the hood for corrosion and make sure its tight...........?
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post #3 of 7 (permalink) Old 05-17-2017, 12:49 PM
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And large BCM fuse in the trunk.

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post #4 of 7 (permalink) Old 05-17-2017, 09:51 PM Thread Starter
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Yes I did check the boost port and is good. The fuse in the trunk is also good. Tried using a scanner and it said no communication with ecm and bcm. Only with power steering module and tcm. Checked power and grounds to ecm and bcm and they're fine has all powers and grounds
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post #5 of 7 (permalink) Old 05-18-2017, 09:09 AM
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BCM has 3 power sources, 2 more fuses in the underhood fuse block.

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post #6 of 7 (permalink) Old 05-20-2017, 09:15 AM Thread Starter
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I did all fuses are good under hood and inside
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post #7 of 7 (permalink) Old 05-23-2017, 01:16 PM
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Have you checked the fuse block for corrosion?
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