Thank you, Fless. I should have been more clear in my post. The voltage at the seven round brake pin on the vehicle side is without the trailer even being hooked up. The vehicle is isolated. I am currently tracing grounds down. there are several grounds on this vehicle. I think i am done on the...
Hey all. This is my very first thread post ever. I have a 2007 Yukon XL Denali with a 6.2 and 172,500 miles. It seems to have several electrical issues. 1. There is voltage (12.2v) between the negative battery post and the DISCONNECTED negative battery cable. Is this normal?? 2. I have low...
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