I have a Late model 2006 gmc Duramax (lbz)..I have been having problems with the driver side battery draining. It takes a few days of sitting for this to happen. It's only the driver side. The alternator is charging. I've read the glow plug module has been known to go bad. It had a recall on the glow plug module a few years back. It's been done. I've tried 3 different batteries, including the one out of my wife's 3/4 ton Suburban that I know is good and same thing. Any ideas??? I tried the search but it keeps saying try different terms. I will try and search later. Something must be wrong with the search either on the sites end or on my end

Thx
Greg