has a 2008 gmc sierra 1500 a while back my battery died so i replace with a new one has run good for about 2 months then it started kinda the same problem , i get in turn the key and nothing at all turn key off and back on and nothing it happens several times then out the blue it starts , now while it happening i got no lights no dash lights or head lights then like i said it appears . i put a meter to the battery and it shows 12.8 volts one other thing i found the hot lead is very warm and this is without it cranking or even lights coming on the negtive is cool to the touch , check for loose connections and do not find any so is wondering if this has happen to others and what the cause might be