Did egr tune today

[johnnydngrs]

(10-09-2017 )Jamescj212 Wrote:  Answer this if you have another good idea. She called a few hours ago and said her low voltage light came on and she dropped from 14ish to 12. The other day she was pulling a trailer and the trailer abs lit up on the screen, tjen went out. Then came back and finally she dropped the trailer and that was that. Now low voltage.

first i would make sure the battery terminals are clean and tight, also would check the voltage on the alternator, if everything checks out might be your batteries