my battery and alt test great out of vehicle but in vehicle battery is not charging alt is testing good says no regulator reading when run charging test in vehicle but works on machine at auto parts s
There must be something causing this issue in the truck wiring,or could be the ECM is bad,not letting it charge the battery.
well i changed ground from battery to block but was curious about ground from chassis to firewall
Yes the body has to have good ground all so.
When you turn on the key do you see the little battery light? That light has to work, it is part of the exciter circuit, if it works then it is like T S T stated, a wiring or ECM glitch.
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