Did you use proper procedure when changing your batteries?
Disconnect both negatives then both positives. When reconnecting, connect the positives first and then connect the negatives. That will prevent any short from arcing a hot positive to something else on the truck.
ECM without power is indefinite.
07 Chevy Classic 2500HD 4x4 2LT LBZ CC/SB White
Nasta Nerf Bars, Line-x, Rancho RS9000XL Shocks, Firestone air bags, Fold-a-cover,
Good/Year Wrangler S/A 265/75/16 E
Transgo Jr. PCV Reroute kit, Trans Line Repair Kit By Dirty Hooker Diesel,
Custom Perf/Tow Tune by Kennedy
2019 Arctic Fox 27-5L 10,500 dry weight
UAW Local 699 Retired Test Technician
Last edited by Ramblinrodney; 02-22-2017 at 07:21 PM.