When truck is shut off it sounds like the stereo system is working trying to eject a CD.
Try to hit the ejection button but it does nothing
Can still hear the stereo working, buzzing, clicking sound ect.
It eventually kills my batteries
Now it’s rough idol high rev no power than levels off to a rough idol almost like a cam and crank sensor but I replaced all them, I’m thinking it could be electrical issue all these issues seemed to come all together when my break lights went
When I let off the accerator at highway speed or when on a downgrade the wait to start light comes on and I hear chiming. Then the truck goes into limp mode. To get it out of limp mode I have to hook up my Smarty Jr and check for a DTC. There isn't a code but I can clear the nonexistent code and the engine works normally.
Wait to start light should be tied into the grid heater circuit, I would start there. The smarty may not be capable of reading more in-depth codes but still clears when you do a flash.