GMC Sierra Computer Diagnostic Connector ALDL

Browse GMC Sierra Computer Diagnostic Connector ALDL questions and answers. Choose a question that matches your symptoms.

2 discussions

No Power To OBD2 Port?

2018 GMC SIERRA

Failed Inspection Because There Is No Power To Port So Can't Do Ma Emissions Test. Contacts Look Good, Auxiliary Power Ports Have Power...

3 ANSWERS

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Asked by mlucas47

2011 GMC SIERRA

I Can't Figure Out Which Fuse My Obd Port Is Connected To. I've Looked For A Cigarette Lighter Fuse And Every Other Fuse That I...

3 ANSWERS

3 IMAGES

Asked by Galaxyal8230

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