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2001 GMC C5500 vehicle speed issue CAT 3126
Posted to HD/Fleet Forum on 2/4/2016 3 Replies

Good Afternoon

Looking component location of the speedometer adapter

Vehicle does not go over 15mph, we found active code in the Cat ecm for vehicle speed and it reads 0 mph at all times.

We checked voltage driving on pin 32 at the cat ecm (comes from sp... Login to read more.

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