No Vin reading

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May 6, 2021 | 08:54 AM

Zachmorgan07

Thread Starter

New Member

Joined: May 2021

Posts: 2

From: Ohio

No Vin reading

'99 Blazer. 4.3l vortec.

Obd2 port has power. Vehicle runs fine now. Can't get any of my code scanners to read vin or communicate with the modules. Help!!!

May 7, 2021 | 12:00 AM

AJBert

BF Veteran

Joined: Oct 2007

Posts: 2,871

From: In the Colorado mountains

Is the ECM original to the vehicle? I don't know if this would would cause the problem itself, but if it wasn't hooked up properly it very possibly could. Might also want to check your grounds, too.

May 7, 2021 | 12:34 AM

Zachmorgan07

Thread Starter

New Member

Joined: May 2021

Posts: 2

From: Ohio

Quote:

Originally Posted by AJBert

Is the ECM original to the vehicle? I don't know if this would would cause the problem itself, but if it wasn't hooked up properly it very possibly could. Might also want to check your grounds, too.

I will check the ground, not sure how to check the ECM for being original or not.

Update: ground is good.

Last edited by Zachmorgan07; May 10, 2021 at 09:45 AM.