Join Date: Oct 2017
Location: NE Washington
Thanked 131 Times in 129 Posts
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Your problems point to bad batteries, parasitic power drain, or both. Get the batteries load tested. I've had 5 year batteries fail in 2 years. Might as well run a charging test on your truck at the same time to make sure they are charging correctly. Check all battery connections, cables and grounds. If that doesn't fix it, check for parasitic power drain. Remove positive terminal from drivers side battery. Connect a multi-meter between the positive battery post and the (disconnected) positive battery cable. Measure voltage draw. If you do have parasitic power drain, start pulling fuses one at a time to see if volt meter drops. If voltage drops when you pull a fuse, you've found the culprit. Troubleshoot and fix that circuit. Accessories (lights, aftermarket stereo, plows, etc.) are always suspect. If you're not familiar with the test, You can go onto Youtube and find a video that shows how to do it. Use the search term parasitic power drain or power draw.
05 Ram 3500, SLT Bighorn, SB QC, Dynamic Stage 3 48RE, triple disc, billet input, S&B CAI, FASS Titanium, Smarty Jr., New stock Bosch injectors, Edge CTS, Hushpower/Magnaflow 4 inch, FTE Resonator, Bilstein 5100's, Redhead Steering, Truxedo, Linex