Brooklyn

I’ve tried unplugging them everything individually and nothing changes, also tried unplugging just the cluster and still no change. I think I’m leaning towards it being the bcm. At this point

Removing the cluster didn’t solve the problem, and the grounds for the ecm and engine have tested good and cleaned off.

No progress, took cables off of battery made sure they were clean with a wire brush same thing for the grounds to engine and frame. Took the ground cable off of the frame and cleaned it for the bcm too. No luck. Fuses for the bcm and pcm are getting power and nothing has blown. Checked power and grounds to the bcm as well everything checking out for wiring to the bcm.

Thank you! Just took them off and hit them with a wire brush. No luck

I have a 2004 GMC Sierra 2500hd, that will start then die immediately. The battery did die and was replaced. Now showing the battery light, check engine light, airbag light, and abs light on the dash. No gauges read with the key on including battery volt gauge. I have done the relearn cycle for the passlock, 2 or 3 times now because this has solved the problem in the past and work perfectly for months. Power window, power locks, radio do not work. But wipers and lights do. Has anyone had this exact problem and found the solution? Any help would be greatly appreciated!