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2002 Blazer BCM not energizing, alternator not charging

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Old Aug 21, 2019 | 11:42 AM
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Default 2002 Blazer BCM not energizing, alternator not charging

Hello and thanks for taking time to read this.

I have a 2002 Blazer 4wd that no longer charges the battery, the OBDII port has no signal, and the instrument cluster is blank except for the "Service engine soon" light. I have checked all the fuses they are good, there is 12 volts and good ground at the BCM, OBDII, and Instrument cluster, however I am showing NO continuity between the ECM and the OBDII.

Any suggestions on where to look for the fault are greatly appreciated!
 
Old Aug 21, 2019 | 03:50 PM
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Did you check the fuses and relays under the hood in addition to those in and under the dash?
 
Old Aug 25, 2019 | 10:07 AM
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Originally Posted by christine_208
Did you check the fuses and relays under the hood in addition to those in and under the dash?
Thank you for your reply, yes I did.
 
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