Why does your battery keep going dead after your car sits for 2 weeks it is a 2005 GMC envoy?
The parasitic load on this vehicle will discharge a FULLY
CHARGED battery in 21 days. What is the condition of your battery
and the climate to which it is exposed? You can check to see if the
load on this vehicle is excessive. Parasitic (Sp.?) should be 0.07
amps. If over this check as suggested by next answer. Something is
drawing power. Possibilities are a under-hood light, courtesy
light, glove box light, etc. Another possibility is that the
battery needs replacing. vehicle is 2005, is battery the original?
sounds like the battery needs replacing a battery that sits idle
does not have much of a life span